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style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"> <span style="font-size: 16px; font-family: "Times New Roman";">PC36</span><span style="font-size: 16px; font-family: 幼圓;">系列直流電阻測(cè)量?jī)x是電線電纜導(dǎo)體直流電阻測(cè)量的專用儀表，儀表的技術(shù)性能應(yīng)能全面滿足</span><span style="font-size: 16px; font-family: "Times New Roman";">GB/T3048.4</span></span><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">電線電纜電性能試驗(yàn)方法</span> <span style="font-size: 16px; font-family: 幼圓;">導(dǎo)體直流電阻試驗(yàn)</span> </span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">中對(duì)測(cè)量設(shè)備的各項(xiàng)技術(shù)要求，測(cè)量快速、準(zhǔn)確、讀數(shù)穩(wěn)定、使用方便。是</span><span style="font-size: 16px; font-family: "Times New Roman";">QJ57</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">QJ36</span><span style="font-size: 16px; font-family: 幼圓;">電橋的更新?lián)Q代產(chǎn)品，與同類數(shù)字式微歐計(jì)相比，本儀表有以下特點(diǎn)：</span></span></span></p><p style="line-height:25px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">1.1 </span><span style="font-size: 16px; font-family: 幼圓;">較高的測(cè)量靈敏度與分辨力。</span></span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">200</span>μΩ<span style="font-size: 16px; font-family: 幼圓;">檔量程的最高分辨力為</span><span style="font-size: 16px; font-family: "Times New Roman";">0.01</span>μΩ（<span style="font-size: 16px; font-family: "Times New Roman";">10</span></span><sup><span style="font-size: 19px; vertical-align: super; font-family: "Times New Roman";">-8</span></sup><span style="font-family: 幼圓; font-size: 19px;">Ω），比現(xiàn)有的數(shù)字式微歐計(jì)的最高分辨力提高了<span style="font-size: 16px; font-family: "Times New Roman";">10</span><span style="font-size: 16px; font-family: 幼圓;">倍。PC36C直流電阻測(cè)量?jī)x器采用特制了高靈敏、低噪聲的納伏放大器，其電壓靈敏度為</span><span style="font-size: 16px; font-family: "Times New Roman";">100</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">nV (0.1</span><span style="font-family: 幼圓; font-size: 19px;">μ</span><span style="font-family: "Times New Roman"; font-size: 19px;">V)</span><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">，該項(xiàng)指標(biāo)已經(jīng)達(dá)到了</span><span style="font-size: 16px; font-family: "Times New Roman";">6 1/2</span><span style="font-size: 16px; font-family: 幼圓;">位數(shù)字電壓表的技術(shù)水平。儀器在“低電流</span><span style="font-size: 16px; font-family: "Times New Roman";">TLO</span><span style="font-size: 16px; font-family: 幼圓;">"測(cè)量狀態(tài)（低測(cè)量電流、高靈敏度）</span>具有測(cè)量靈敏度與分辨力，用<span style="font-size: 16px; font-family: "Times New Roman";">10A</span><span style="font-size: 16px; font-family: 幼圓;">電流測(cè)</span><span style="font-size: 16px; font-family: "Times New Roman";">100</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">mm</span><sup><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: super;">2</span></sup><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">截面</span><span style="font-size: 16px; font-family: "Times New Roman";">1</span><span style="font-size: 16px; font-family: 幼圓;">米銅線，有</span><span style="font-size: 16px; font-family: "Times New Roman";">5</span><span style="font-size: 16px; font-family: 幼圓;">位有效讀數(shù)，測(cè)</span><span style="font-size: 16px; font-family: "Times New Roman";">1000</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">mm</span><sup><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: super;">2</span></sup><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">截面</span><span style="font-size: 16px; font-family: "Times New Roman";">1</span><span style="font-size: 16px; font-family: 幼圓;">米銅線，也保證有</span><span style="font-size: 16px; font-family: "Times New Roman";">4</span><span style="font-size: 16px; font-family: 幼圓;">位有效讀數(shù)，比現(xiàn)有的數(shù)字式低阻表提高了一個(gè)數(shù)量級(jí)，特別適用于超大截面導(dǎo)線與超小截面微細(xì)導(dǎo)線的測(cè)量。</span></span></span></p><p style="line-height:25px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">1.2</span><span style="font-size: 16px; font-family: 幼圓;">多電流測(cè)量功能。</span></span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">本儀器的各個(gè)量程設(shè)置了不同的測(cè)量電流可供選擇，并在儀表面板上標(biāo)明。該性能克服了目前數(shù)字表及某些電橋（如</span><span style="font-size: 16px; font-family: "Times New Roman";">QJ57</span><span style="font-size: 16px; font-family: 幼圓;">）測(cè)量電流不能調(diào)節(jié)，而且在某些檔位電流偏大引起被測(cè)導(dǎo)體發(fā)熱的缺陷。為了實(shí)現(xiàn)多電流測(cè)量，儀表采用了創(chuàng)新的數(shù)字比例式測(cè)量電路，其工作原理與電橋相仿。與目前數(shù)字式微歐計(jì)常用的恒流源</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">—</span><span style="font-family: 幼圓; font-size: 16px;">電壓表方式不同，本儀表讀數(shù)的最終表達(dá)式與測(cè)量電流無(wú)關(guān)，大大降低了對(duì)恒流源的精度要求，同時(shí)提高了儀表測(cè)量的準(zhǔn)確度和穩(wěn)定性。</span></span></p><p style="line-height:25px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">1.3</span><span style="font-size: 16px; font-family: 幼圓;">倍率電流測(cè)量功能。</span></span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">為了方便用戶實(shí)施</span><span style="font-size: 16px; font-family: "Times New Roman";">GB/T 3048.4</span><span style="font-size: 16px; font-family: 幼圓;">第</span><span style="font-size: 16px; font-family: "Times New Roman";">5.6</span><span style="font-size: 16px; font-family: 幼圓;">條中用比例為</span><span style="font-size: 16px; font-family: "Times New Roman";">1</span><span style="font-size: 16px; font-family: 幼圓;">：</span><span style="font-size: 16px; font-family: "Times New Roman";">1.41</span><span style="font-size: 16px; font-family: 幼圓;">的兩個(gè)測(cè)量電流分別測(cè)試樣電阻值，以判定是否發(fā)生溫升超標(biāo)的方法，本儀表設(shè)置有比例為</span><span style="font-size: 16px; font-family: "Times New Roman";">0.707</span><span style="font-size: 16px; font-family: 幼圓;">：</span><span style="font-size: 16px; font-family: "Times New Roman";">1.00</span><span style="font-size: 16px; font-family: 幼圓;">：</span><span style="font-size: 16px; font-family: "Times New Roman";">1.41</span><span style="font-size: 16px; font-family: 幼圓;">三檔電流可供切換，避免了為了降低測(cè)量電流而改變量程檔位</span><span style="font-size: 16px; font-family: "Times New Roman";">, </span><span style="font-size: 16px; font-family: 幼圓;">造成測(cè)量精度及分辨力的損失。</span></span></span></p><p style="line-height:25px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">1.4</span><span style="font-size: 16px; font-family: 幼圓;">外部熱電勢(shì)平衡功能。</span></span></strong><span style="font-family: 幼圓; font-size: 19px;">為了降低電位端的外部接觸電勢(shì)與熱電勢(shì)對(duì)測(cè)量結(jié)果的影響，本儀表設(shè)置了外部電勢(shì)平衡調(diào)節(jié)裝置，該方法是</span><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">GB/T 3048.2 </span><span style="font-size: 16px; font-family: 幼圓;">電線電纜電性能試驗(yàn)方法金屬導(dǎo)體材料電阻率試驗(yàn) </span></span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">第</span><span style="font-size: 16px; font-family: "Times New Roman";">6.5.3</span><span style="font-size: 16px; font-family: 幼圓;">中推薦的方法之一。</span></span><strong></strong></span></p><p style="line-height:25px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">1.5</span><span style="font-size: 16px; font-family: 幼圓;">反向電流測(cè)量功能</span></span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">。根據(jù)</span><span style="font-size: 16px; font-family: "Times New Roman";">GB/T 3048.4</span><span style="font-size: 16px; font-family: 幼圓;">第</span><span style="font-size: 16px; font-family: "Times New Roman";">5.5</span><span style="font-size: 16px; font-family: 幼圓;">條規(guī)定，當(dāng)試樣電阻小于</span><span style="font-size: 16px; font-family: "Times New Roman";">0.1</span>Ω時(shí)，應(yīng)將電流反向再測(cè)一次，然后取算術(shù)平均值。在電橋法中，該功能是通過切換外部換向閘刀實(shí)現(xiàn)的，而通常數(shù)字式微歐計(jì)是不容許電流反向的，無(wú)法實(shí)現(xiàn)標(biāo)準(zhǔn)要求的操作。本儀器中采用特殊設(shè)計(jì)的雙向電流保護(hù)電路，允許進(jìn)行</span><span style="font-family: "Times New Roman"; font-size: 19px;"> </span><span style="font-family: 幼圓; font-size: 19px;">反向電流測(cè)量，并在儀器內(nèi)部設(shè)置了大功率換向繼電器，通過面板開關(guān)實(shí)施電流換向操作，操作簡(jiǎn)捷、使用方便。</span><strong></strong></span></p><p style="line-height:25px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: "Times New Roman"; font-size: 19px;">1.6 </span></strong><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">銅、鋁導(dǎo)線溫度手動(dòng)校正功能（</span><span style="font-size: 16px; font-family: "Times New Roman";">PC36C</span><span style="font-size: 16px; font-family: 幼圓;">）</span></span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">。</span> <span style="font-size: 16px; font-family: 幼圓;">當(dāng)試驗(yàn)環(huán)境溫度在</span><span style="font-size: 16px; font-family: "Times New Roman";">15-25</span>℃范圍內(nèi)，通過設(shè)定</span><span style="font-family: "Times New Roman"; font-size: 19px;">PC36C</span><span style="font-family: 幼圓; font-size: 19px;">的溫度校正開關(guān)，儀表將被測(cè)銅線或鋁線的電阻值根據(jù)</span><strong><span style="font-size: 19px; font-family: "Times New Roman";">GB/T 3048.4</span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">推薦的公式自動(dòng)換算到該導(dǎo)線在基準(zhǔn)溫度</span><span style="font-size: 16px; font-family: "Times New Roman";">20</span>℃時(shí)的電阻值。</span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: "Times New Roman"; font-size: 19px;">1.7</span></strong><strong><span style="font-family: 幼圓; font-size: 19px;"> <span style="font-size: 16px; font-family: 幼圓;">測(cè)溫功能以及導(dǎo)體溫度自動(dòng)校正功能</span></span></strong><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">（</span><span style="font-size: 16px; font-family: "Times New Roman";">PC36E</span><span style="font-size: 16px; font-family: 幼圓;">）</span></span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">。</span><span style="font-size: 16px; font-family: "Times New Roman";">.</span><span style="font-size: 16px; font-family: 幼圓;">本公司建立了以一等鉑電阻</span></span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;">標(biāo)準(zhǔn)溫度計(jì)、<span style="font-size: 16px; font-family: "Times New Roman";">7 1/2</span>位高精度微歐表、穩(wěn)定性達(dá)到<span style="font-size: 16px; font-family: "Times New Roman";">0.01</span>℃的恒溫爐為基礎(chǔ)的熱工實(shí)驗(yàn)室，最新研制出高性能導(dǎo)體電阻測(cè)量?jī)x表<span style="font-size: 16px; font-family: "Times New Roman";">PC36E</span>，可以準(zhǔn)確測(cè)量導(dǎo)體的真實(shí)溫度，直接顯示經(jīng)過溫度校正后，基準(zhǔn)溫度<span style="font-size: 16px; font-family: "Times New Roman";">20</span>℃時(shí)的導(dǎo)體電阻值。</span></p><p style="text-indent:37px;line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">PC36E</span>的出現(xiàn)，使導(dǎo)體電阻試驗(yàn)操作達(dá)到了最簡(jiǎn)化，實(shí)現(xiàn)電阻測(cè)量、溫度測(cè)量、溫度校正一步完成，取代傳統(tǒng)的三個(gè)操作步驟，大大節(jié)約人力物力，并具有更高的溫度校正準(zhǔn)確度。儀表提供<span style="font-size: 16px; font-family: "Times New Roman";">5</span>種常用材料的溫度系數(shù)，可以在<span style="font-size: 16px; font-family: "Times New Roman";">0-40</span>℃范圍內(nèi)進(jìn)行準(zhǔn)確的溫度校正，大大降低了導(dǎo)體電阻測(cè)量時(shí)對(duì)環(huán)境溫度控溫范圍的要求，不僅可以用于實(shí)驗(yàn)室，也可以用在車間現(xiàn)場(chǎng)，用電橋夾具直接測(cè)量成盤電纜上<span style="font-size: 16px; font-family: "Times New Roman";">1</span>米距離的電阻值，避免了由于切斷取樣造成金屬材料的損失和浪費(fèi)，同時(shí)也節(jié)約了時(shí)間和人力。</span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">1.8 </span><span style="font-size: 16px; font-family: 幼圓;">高準(zhǔn)確度長(zhǎng)期穩(wěn)定性 </span></span></strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">本儀表是同類儀表中準(zhǔn)確度最高的，內(nèi)部的標(biāo)準(zhǔn)電阻采用精密錳銅材料，并經(jīng)過特殊的長(zhǎng)時(shí)間老化工藝制成，具有和</span><span style="font-size: 16px; font-family: "Times New Roman";">BZ3</span><span style="font-size: 16px; font-family: 幼圓;">系列標(biāo)準(zhǔn)電阻一樣很低的溫度系數(shù)和年穩(wěn)定性。儀器的高靈敏度電位輸入端采用了低熱電勢(shì)、長(zhǎng)壽命的復(fù)銀開關(guān)和低熱電勢(shì)的鍍金接插件，可以確保測(cè)量的準(zhǔn)確度與長(zhǎng)期穩(wěn)定性。</span></span></span></p><p style=";line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";">2 PC36C直流電阻測(cè)量?jī)x</span></strong><strong><span style="font-family: 幼圓; font-size: 19px;">基本參數(shù)</span></strong><strong></strong></span></p><p style="margin-left:27px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">儀表的基本參數(shù)見表</span><span style="font-size: 19px; font-family: "Times New Roman";">1</span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"> </span><strong><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: 幼圓;">表</span><span style="font-size: 16px; font-family: "Times New Roman";">1 </span><span style="font-size: 16px; font-family: 幼圓;">基本參數(shù)</span></span></strong><strong></strong></span></p><div id="iqaqewgi6e" class="tabledivclass" style="width: 99%; float: left;"><table border="1" cellspacing="0" align="left" style="max-width: 748px; width: 779px; table-layout: fixed;"><colgroup><col data-offset-left="8.519737243652344" data-offset-right="168.5526351928711" data-resize-pixel="160.03289794921875" data-resize-percent="20.543375859976734" style="width: 20.5434%;"/><col data-offset-left="168.55264282226562" data-offset-right="397.58226013183594" data-resize-pixel="229.0296173095703" data-resize-percent="29.40046435296153" style="width: 29.4005%;"/><col data-offset-left="397.5822448730469" data-offset-right="401.5789556503296" data-resize-pixel="3.996710777282715" data-resize-percent="0.5130565824496425" style="width: 0.5131%;"/><col data-offset-left="401.5789489746094" data-offset-right="664.6052856445312" data-resize-pixel="263.0263366699219" data-resize-percent="33.76461317970756" style="width: 33.7646%;"/></colgroup><tbody><tr style="height:41px;page-break-inside:avoid" class="firstRow"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="text-indent:28px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;">型號(hào)</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: 1px solid windowtext; border-bottom: 1px solid windowtext;"><p style="text-indent:49px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;">PC36C </span></p></td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height: 27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> PC36E </span></p></td></tr><tr style="height:40px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">測(cè)量范圍</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: none;"><p style="text-indent:140px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";">0</span><span style="font-size: 16px; font-family: 幼圓;">．</span><span style="font-size: 16px; font-family: "Times New Roman";">01</span></span><span style="font-family: "Times New Roman"; font-size: 14px;">μ?─</span><span style="font-size: 14px; font-family: "Times New Roman";">200</span><span style="font-family: "Times New Roman"; font-size: 14px;">?</span></span></p></td></tr><tr style="height:30px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">測(cè)量電流</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;"> </span><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;"> </span><span style="font-size: 14px; font-family: "Times New Roman";">0.707</span><span style="font-family: "Times New Roman"; font-size: 14px;">mA-1</span><span style="font-size: 14px; font-family: "Times New Roman";">4.1</span><span style="font-family: "Times New Roman"; font-size: 14px;">A </span></span></p></td></tr><tr style="height:40px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">倍率電流測(cè)量</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 0.707I</span><span style="font-size: 14px; font-family: 幼圓;">：</span><span style="font-size: 14px; font-family: "Times New Roman";">1.00I</span><span style="font-size: 14px; font-family: 幼圓;">：</span><span style="font-size: 14px; font-family: "Times New Roman";">1.41I</span></span></p></td></tr><tr style="height:41px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">雙向電流測(cè)量</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">內(nèi)附電流換向裝置，可進(jìn)行正、反向電流測(cè)量</span></span></p></td></tr><tr style="height:40px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">電阻溫度校正</span></span></p></td><td valign="top" colspan="2" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">15</span>—<span style="font-size: 16px; font-family: "Times New Roman";">25</span>℃<span style="font-size: 16px; font-family: 宋體;">(</span>人工輸入環(huán)境溫度<span style="font-size: 16px; font-family: 宋體;">)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="text-indent:14px;line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">0</span>—<span style="font-size: 16px; font-family: "Times New Roman";">40</span>℃ <span style="font-size: 16px; font-family: 宋體;">(</span>自動(dòng)測(cè)溫及溫度校正<span style="font-size: 16px; font-family: 宋體;">)</span></span></p></td></tr><tr style="height:37px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 14px;"> </span><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">顯示</span></span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 4 1/2 </span><span style="font-size: 14px; font-family: 幼圓;">位數(shù)字顯示，測(cè)量結(jié)果顯示、量程顯示、單位顯示，測(cè)量功能顯示、測(cè)量狀態(tài)顯示、溫度顯示、材料溫度系數(shù)顯示、帶背光</span></span></p></td></tr><tr style="height:36px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">準(zhǔn)確度等級(jí)</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 0.04</span><span style="font-size: 14px; font-family: 幼圓;">級(jí)</span><span style="font-size: 14px; font-family: "Times New Roman";">, 0.05</span><span style="font-size: 14px; font-family: 幼圓;">級(jí)</span><span style="font-size: 14px; font-family: "Times New Roman";">, 0.1</span><span style="font-size: 14px; font-family: 幼圓;">級(jí)</span></span></p></td></tr><tr style="height:31px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">電源</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> AC 220V</span><span style="font-size: 16px; font-family: 幼圓;">（</span><span style="font-size: 16px; font-family: "Times New Roman";">1</span>±<span style="font-size: 16px; font-family: "Times New Roman";">10%</span><span style="font-size: 16px; font-family: 幼圓;">），</span><span style="font-size: 16px; font-family: "Times New Roman";">50H</span></span><span style="font-family: "Times New Roman"; font-size: 14px;">z</span><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: 幼圓;">（</span><span style="font-size: 16px; font-family: "Times New Roman";">1</span>±</span><span style="font-family: "Times New Roman"; font-size: 14px;">5%</span><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td></tr><tr style="height:25px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">功耗</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 80VA </span></p></td></tr><tr style="height:25px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 14px;"> </span><span style="font-family: 幼圓; font-size: 14px;">外形尺寸</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:56px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 14px;">360</span><span style="font-family: 幼圓; font-size: 14px;">×</span><span style="font-family: "Times New Roman"; font-size: 14px;">133</span><span style="font-family: 幼圓; font-size: 14px;">×</span><span style="font-family: "Times New Roman"; font-size: 14px;">400</span><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: 幼圓;">（</span><span style="font-size: 16px; font-family: "Times New Roman";">W</span>×<span style="font-size: 16px; font-family: "Times New Roman";">H</span>×<span style="font-size: 16px; font-family: "Times New Roman";">D</span><span style="font-size: 16px; font-family: 幼圓;">），</span></span><span style="font-family: "Times New Roman"; font-size: 14px;">mm</span></span></p></td></tr><tr style="height:34px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 14px;"> </span><span style="font-family: 幼圓; font-size: 14px;">質(zhì)量（重量）</span></span></p></td><td valign="top" colspan="3" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 12</span><span style="font-family: "Times New Roman"; font-size: 14px;"> kg</span></span></p></td></tr></tbody></table></div><p style="margin-left:31px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style=";line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";">3 </span></strong><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">技術(shù)要求</span> </span></strong><strong></strong></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: "Times New Roman";">3.1</span></strong><span style="font-family: 幼圓;"> </span><strong><span style="font-family: 幼圓;">儀器使用環(huán)境條件</span></strong><strong><span style="font-family: 幼圓;"></span></strong><span style="font-family: 幼圓;"> </span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.1.1 </span><span style="font-size: 16px; font-family: 幼圓;">環(huán)境溫度</span><span style="font-size: 16px; font-family: "Times New Roman";">: 0-40</span>℃</span><span style="font-family: 宋體; font-size: 19px;"> </span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.1.2 </span><span style="font-size: 16px; font-family: 幼圓;">相對(duì)濕度不大于</span><span style="font-size: 16px; font-family: "Times New Roman";">85%</span></span><span style="font-family: "Times New Roman"; font-size: 19px;"> </span><span style="font-size: 19px; font-family: "Times New Roman";">RH</span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.1.3 </span><span style="font-size: 16px; font-family: 幼圓;">電源</span><span style="font-size: 16px; font-family: "Times New Roman";">: 220V</span>±<span style="font-size: 16px; font-family: "Times New Roman";">10%, 50H</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">z</span><span style="font-family: 幼圓; font-size: 19px;">±<span style="font-size: 16px; font-family: "Times New Roman";">2H</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">z</span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">3.1.4 </span><span style="font-size: 19px; font-family: 幼圓;">除地磁場(chǎng)外，無(wú)電脈沖電火花等電磁場(chǎng)</span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: "Times New Roman";">3.2</span></strong><span style="font-family: 幼圓;"> </span><strong><span style="font-family: 幼圓;">電阻測(cè)量基本誤差</span></strong></span></p><p style="text-indent:38px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">儀表各量程的基本誤差見表</span><span style="font-size: 19px; font-family: "Times New Roman";">2</span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 14px;"> <span style="font-size: 16px; font-family: 幼圓;">表</span><span style="font-size: 16px; font-family: "Times New Roman";">2 </span><span style="font-size: 16px; font-family: 幼圓;">基本誤差</span></span></strong><strong></strong></span></p><div id="iqaqewgi6e" class="tabledivclass" style="width: 99%; float: left;"><table border="1" cellspacing="0" align="left" style="max-width: 748px; width: 729px; table-layout: fixed;"><colgroup><col data-offset-left="8.519737243652344" data-offset-right="156.54605865478516" data-resize-pixel="148.0263214111328" data-resize-percent="20.30539388355731" style="width: 20.3054%;"/><col data-offset-left="156.54605102539062" data-offset-right="387.5657958984375" data-resize-pixel="231.01974487304688" data-resize-percent="31.689951285740314" style="width: 31.69%;"/><col data-offset-left="387.5657958984375" data-offset-right="736.5789794921875" data-resize-pixel="349.01318359375" data-resize-percent="47.875608174725656" style="width: 47.8756%;"/></colgroup><tbody><tr style="height:33px" class="firstRow"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 14px; font-family: "Times New Roman";"> </span></strong><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">量程</span></span></span></p></td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">常規(guī)電流</span></span></p></td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">低電流</span></span></p></td></tr><tr style="height:27px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 200</span>μΩ</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><strong><span style="font-family: 幼圓; font-size: 14px;">————</span></strong><strong></strong></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 宋體;"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.0</span></span><span style="font-family: "Times New Roman"; font-size: 14px;">8</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.02</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td></tr><tr style="height:27px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 2</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 宋體;"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 宋體;"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.0</span></span><span style="font-family: "Times New Roman"; font-size: 14px;">8</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.02</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td></tr><tr style="height:23px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 20</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.0</span></span><span style="font-family: "Times New Roman"; font-size: 14px;">8</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.02</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td></tr><tr style="height:31px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 200</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td></tr><tr style="height:30px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 2</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td></tr><tr style="height:15px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 20</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td></tr><tr style="height:23px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 200</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">±</span><span style="font-size: 16px; font-family: 宋體;">(</span><span style="font-size: 16px; font-family: "Times New Roman";">0.0</span></span><span style="font-family: "Times New Roman"; font-size: 14px;">3</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">X</span></sub></i><span style="font-family: "Times New Roman"; font-size: 14px;">+0.01</span><span style="font-size: 14px; font-family: "Times New Roman";">%</span><i><span style="font-family: "Times New Roman"; font-size: 14px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 14px; vertical-align: sub;">m</span></sub></i><span style="font-size: 14px; font-family: "Times New Roman";">)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;"> </span><strong><span style="font-family: 幼圓; font-size: 14px;">————</span></strong></span></p></td></tr><tr style="height:21px;page-break-inside:avoid"><td valign="top" colspan="3" style="padding: 0px 7px; border-width: initial; border-style: none; border-color: initial;"><br/></td></tr></tbody></table></div><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;">其中</span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">X</span></sub></i><span style="font-family: 幼圓; font-size: 19px;">：儀表讀數(shù)值（電阻示值）</span><strong><span style="font-family: "Times New Roman"; font-size: 19px;"> </span></strong><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">m</span></sub></i><span style="font-family: 幼圓; font-size: 19px;">：所測(cè)量程滿度值</span><strong></strong></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";">3.3</span></strong><span style="font-family: 幼圓; font-size: 19px;"> </span><strong><span style="font-family: 幼圓; font-size: 19px;">電阻測(cè)量準(zhǔn)確度等級(jí)</span></strong><strong></strong></span></p><p style="margin-left:24px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">儀表各量程的準(zhǔn)確度等級(jí)及最大允許誤差見表</span><span style="font-size: 19px; font-family: "Times New Roman";">3</span></span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"> </span><strong><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: 幼圓;">表</span><span style="font-size: 16px; font-family: "Times New Roman";">3 </span><span style="font-size: 16px; font-family: 幼圓;">準(zhǔn)確度等級(jí)與最大允許誤差</span></span></strong><strong></strong></span></p><div id="iqaqewgi6e" class="tabledivclass" style="width: 99%; float: left;"><table border="1" cellspacing="0" align="left" style="max-width: 748px; width: 747px; table-layout: fixed;"><colgroup><col data-offset-left="8.519737243652344" data-offset-right="156.54605865478516" data-resize-pixel="148.0263214111328" data-resize-percent="19.81610728395352" style="width: 19.8161%;"/><col data-offset-left="156.54605102539062" data-offset-right="279.57237243652344" data-resize-pixel="123.02632141113281" data-resize-percent="16.469387069763428" style="width: 16.4694%;"/><col data-offset-left="279.5723876953125" data-offset-right="402.5987091064453" data-resize-pixel="123.02632141113281" data-resize-percent="16.469387069763428" style="width: 16.4694%;"/><col data-offset-left="402.59869384765625" data-offset-right="534.6217193603516" data-resize-pixel="132.0230255126953" data-resize-percent="17.673765128874873" style="width: 17.6738%;"/><col data-offset-left="534.6217041015625" data-offset-right="754.6381530761719" data-resize-pixel="220.01644897460938" data-resize-percent="29.45333988950594" style="width: 29.4533%;"/></colgroup><tbody><tr style="height:28px;page-break-inside:avoid" class="firstRow"><td valign="top" rowspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">量程</span></span></p></td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;"> </span><span style="font-family: 幼圓; font-size: 14px;">常規(guī)電流</span></span></p></td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="margin-left:85px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;">低電流</span></p></td></tr><tr style="height:27px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">準(zhǔn)確度等級(jí)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;">最大允許誤差</span></p></td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">準(zhǔn)確度等級(jí)</span></span></p></td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;">最大允許誤差</span></p></td></tr><tr style="height:27px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 200</span>μΩ</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">————</span></span></strong><strong></strong></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">————</span></span></strong><strong></strong></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.1</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: 宋體;"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.1%</span></span></p></td></tr><tr style="height:27px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 2</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.05</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: 宋體;"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.05%</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.1</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: 宋體;"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.1%</span></span></p></td></tr><tr style="height:23px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 20</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.05</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.05%</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.1</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.1%</span></span></p></td></tr><tr style="height:31px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 200</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.05</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.05%</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.05</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.05%</span></span></p></td></tr><tr style="height:30px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 2</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.05</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.05%</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.05</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.05%</span></span></p></td></tr><tr style="height:15px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 20</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.05</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.05%</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.05</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.05%</span></span></p></td></tr><tr style="height:23px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 200</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 0.04</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span>±<span style="font-size: 16px; font-family: "Times New Roman";">0.04%</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">————</span></span></strong><strong></strong></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";"> </span><span style="font-size: 16px; font-family: 幼圓;">————</span></span></strong><strong></strong></span></p></td></tr></tbody></table></div><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> 3</span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";">3.4</span></strong><span style="font-family: 幼圓; font-size: 19px;"> </span><strong><span style="font-family: 幼圓; font-size: 19px;">額定電流</span></strong><strong></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> <span style="font-size: 19px; font-family: 幼圓;">儀表各測(cè)量檔位的額定電流標(biāo)稱值見表</span><span style="font-size: 19px; font-family: "Times New Roman";">4</span><span style="font-size: 19px; font-family: 幼圓;">。</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 14px;"> </span><strong><span style="font-family: 幼圓; font-size: 14px;"> <span style="font-size: 16px; font-family: 幼圓;">表</span><span style="font-size: 16px; font-family: "Times New Roman";">4 </span><span style="font-size: 16px; font-family: 幼圓;">額定電流標(biāo)稱值</span></span></strong><strong></strong></span></p><div id="iqaqewgi6e" class="tabledivclass" style="width: 99%; float: left;"><table border="1" cellspacing="0" align="left" style="max-width: 748px; width: 744px; table-layout: fixed;"><colgroup><col data-offset-left="8.519737243652344" data-offset-right="216.06908416748047" data-resize-pixel="207.54934692382812" data-resize-percent="27.896417597288725" style="width: 27.8964%;"/><col data-offset-left="216.069091796875" data-offset-right="426.10198974609375" data-resize-pixel="210.03289794921875" data-resize-percent="28.23022821898101" style="width: 28.2302%;"/><col data-offset-left="426.10198974609375" data-offset-right="751.1184387207031" data-resize-pixel="325.0164489746094" data-resize-percent="43.685006582608786" style="width: 43.685%;"/></colgroup><tbody><tr style="height:28px;page-break-inside:avoid" class="firstRow"><td valign="top" rowspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><strong><span style="font-size: 14px; font-family: "Times New Roman";"> </span></strong><span style="font-size: 14px; font-family: "Times New Roman";"> </span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">量程</span></span></p></td><td valign="top" colspan="2" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">測(cè)量狀態(tài)</span></span></p></td></tr><tr style="height:27px;page-break-inside:avoid"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">常規(guī)電流</span></span></p></td><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-size: 14px; font-family: 幼圓;">低電流</span></span></p></td></tr><tr style="height:27px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 200</span>μΩ</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><strong><span style="font-family: 幼圓; font-size: 14px;">———— </span></strong><strong></strong></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 10A</span></p></td></tr><tr style="height:27px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 2</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 10A</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 1A</span></p></td></tr><tr style="height:23px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 20</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: "Times New Roman"; font-size: 16px;"> 1A</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 400</span><span style="font-family: "Times New Roman"; font-size: 14px;">mA</span></span></p></td></tr><tr style="height:31px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> 200</span><span style="font-family: "Times New Roman"; font-size: 14px;">m</span><span style="font-family: 幼圓; font-size: 14px;">Ω</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;">400mA</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;">100mA</span></span></p></td></tr><tr style="height:30px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 2</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;">100mA</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;">10mA</span></span></p></td></tr><tr style="height:15px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 20</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;">10mA</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;">1mA</span></span></p></td></tr><tr style="height:23px"><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";"> 200</span>Ω</span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><span style="font-family: "Times New Roman"; font-size: 14px;">1mA</span></span></p></td><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: "Times New Roman";"> </span><strong><span style="font-family: 幼圓; font-size: 14px;">————</span></strong></span></p></td></tr><tr style="height:21px"><td valign="top" colspan="3" style="padding: 0px 7px; border-width: initial; border-style: none; border-color: initial;"><br/></td></tr></tbody></table></div><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";"><br/></span></strong></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.5</span><span style="font-size: 16px; font-family: 幼圓;">雙向電流測(cè)量</span></span></strong></span></p><p style="text-indent:28px;line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">在消除了測(cè)量回路的熱電勢(shì)偏差后，儀表在正向電流下的測(cè)量結(jié)果與反向電流下的測(cè)量結(jié)果的相差值，不超過儀表基本誤差的</span><span style="font-size: 19px; font-family: "Times New Roman";">1/2</span><span style="font-size: 19px; font-family: 幼圓;">。</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.6 </span><span style="font-size: 16px; font-family: 幼圓;">銅鋁導(dǎo)線溫度校正，人工輸入環(huán)境溫度</span><span style="font-size: 16px; font-family: "Times New Roman";">(PC36C)</span><span style="font-size: 16px; font-family: 幼圓;">：</span></span></strong></span></p><p style="line-height:28px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.6,1</span>溫度校正范圍：環(huán)境溫度設(shè)定值 <span style="font-size: 16px; font-family: "Times New Roman";">15.0</span>—<span style="font-size: 16px; font-family: "Times New Roman";">25.0</span>℃，最小步進(jìn)值<span style="font-size: 16px; font-family: "Times New Roman";">0.1</span>℃。</span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.6.2</span><span style="font-size: 16px; font-family: 幼圓;">溫度校正特性</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">:</span><span style="font-family: 幼圓; font-size: 19px;"> <span style="font-size: 16px; font-family: 幼圓;">當(dāng)被測(cè)電阻的材質(zhì)為銅或鋁時(shí)，溫度校正系數(shù)</span></span><i><span style="font-family: "Times New Roman"; font-size: 19px;">K</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><span style="font-family: 幼圓; font-size: 19px;">符合下列公式：</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"> </span><i><span style="font-family: "Times New Roman"; font-size: 19px;">K</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><span style="font-family: "Times New Roman"; font-size: 19px;"> = 1/ [1+0.004( t-20 )] = 250 / (230 + t )</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">其中</span><span style="font-size: 16px; font-family: "Times New Roman";">: </span></span><span style="font-family: "Times New Roman"; font-size: 19px;">t</span><span style="font-family: 幼圓; font-size: 19px;">為環(huán)境溫度</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.6.3</span><span style="font-size: 16px; font-family: 幼圓;">儀表示值 </span></span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">X</span></sub></i><i><span style="font-family: "Times New Roman"; font-size: 19px;"> </span></i><span style="font-family: "Times New Roman"; font-size: 19px;">= </span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">20</span></sub></i><span style="font-family: "Times New Roman"; font-size: 19px;"> = </span><i><span style="font-family: "Times New Roman"; font-size: 19px;">K</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><i><span style="font-family: "Times New Roman"; font-size: 19px;">*R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><i></i></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;">其中：</span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">20</span></sub></i><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">：</span><span style="font-size: 16px; font-family: "Times New Roman";">20</span>℃時(shí)的電阻值 </span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><span style="font-family: 幼圓; font-size: 19px;">：環(huán)境溫度為</span><span style="font-family: "Times New Roman"; font-size: 19px;">t </span><span style="font-family: 幼圓; font-size: 19px;">時(shí)的電阻值</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: "Times New Roman"; font-size: 19px;">3.7</span></strong><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">自動(dòng)溫度測(cè)量以及溫度校正</span><span style="font-size: 16px; font-family: "Times New Roman";">(PC36E)</span><span style="font-size: 16px; font-family: 幼圓;">：</span></span></strong></span></p><p style="line-height:28px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.7.1 </span>溫度測(cè)量范圍： <span style="font-size: 16px; font-family: "Times New Roman";">0</span>—<span style="font-size: 16px; font-family: "Times New Roman";">40</span>℃<span style="font-size: 16px; font-family: 宋體;">,</span>分辨力： <span style="font-size: 16px; font-family: "Times New Roman";">0.01</span>℃。</span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">3.7.2</span><span style="font-family: "Times New Roman"; font-size: 19px;"> </span><span style="font-family: 幼圓; font-size: 19px;">溫度測(cè)量準(zhǔn)確度：</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 19px;"> </span><span style="font-family: 幼圓; font-size: 19px;"> <span style="font-size: 16px; font-family: 幼圓;">在</span><span style="font-size: 16px; font-family: "Times New Roman";">15</span><span style="font-size: 16px; font-family: 幼圓;">—</span><span style="font-size: 16px; font-family: "Times New Roman";">25</span>℃范圍內(nèi)，溫度測(cè)量誤差不大于±<span style="font-size: 16px; font-family: "Times New Roman";">0.05</span>℃</span><span style="font-family: 宋體; font-size: 19px;">;</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 19px;"> </span><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">在</span><span style="font-size: 16px; font-family: "Times New Roman";">10</span><span style="font-size: 16px; font-family: 幼圓;">—</span><span style="font-size: 16px; font-family: "Times New Roman";">30</span>℃范圍內(nèi)，溫度測(cè)量誤差不大于±<span style="font-size: 16px; font-family: "Times New Roman";">0.1</span>℃</span><span style="font-family: 宋體; font-size: 19px;">;</span></span></p><p style="line-height:28px"><span style="font-family: 幼圓; font-size: 16px;"> 在<span style="font-size: 16px; font-family: "Times New Roman";">0</span>—<span style="font-size: 16px; font-family: "Times New Roman";">40</span>℃范圍內(nèi)，溫度測(cè)量誤差不大于±<span style="font-size: 16px; font-family: "Times New Roman";">0.15</span>℃。</span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.7.3</span><span style="font-size: 16px; font-family: 幼圓;">溫度校正特性</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">:</span><span style="font-family: 幼圓; font-size: 19px;"> <span style="font-size: 16px; font-family: 幼圓;">溫度校正系數(shù)</span></span><i><span style="font-family: "Times New Roman"; font-size: 19px;">K</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><span style="font-family: 幼圓; font-size: 19px;">符合下列公式：</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"> </span><i><span style="font-family: "Times New Roman"; font-size: 19px;">K</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><span style="font-family: "Times New Roman"; font-size: 19px;"> = 1/ [1+α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: "Times New Roman"; font-size: 19px;">( t-20 )] </span><span style="font-family: 宋體; font-size: 19px;"> <span style="font-size: 16px; font-family: "Times New Roman";">. </span></span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 19px;"><span style="font-size: 16px; font-family: 宋體;">其中</span><span style="font-size: 16px; font-family: "Times New Roman";">: </span></span><span style="font-family: "Times New Roman"; font-size: 19px;">t</span><span style="font-family: 宋體; font-size: 19px;"><span style="font-size: 16px; font-family: 宋體;">：試樣溫度</span> </span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;">4</span></p><p style="text-indent:19px;line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 宋體; font-size: 19px;"><span style="font-size: 16px; font-family: 宋體;">：導(dǎo)線材料的電阻溫度系數(shù)（</span><span style="font-size: 16px; font-family: "Times New Roman";">20</span>℃）,常用導(dǎo)體材質(zhì)的</span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 宋體; font-size: 19px;"><span style="font-size: 16px; font-family: 宋體;">數(shù)據(jù)為：</span> </span></span></p><p style="text-indent:19px;line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 19px;">銅及鋁排：</span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 宋體; font-size: 19px;"> <span style="font-size: 16px; font-family: "Times New Roman";">=3.93</span>×<span style="font-size: 16px; font-family: "Times New Roman";">10</span></span><sup><span style="font-size: 19px; vertical-align: super; font-family: "Times New Roman";">-3</span></sup><span style="font-family: 宋體; font-size: 19px;">/℃；硬鋁線： </span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 宋體; font-size: 19px;"> <span style="font-size: 16px; font-family: "Times New Roman";">=4.03</span>×<span style="font-size: 16px; font-family: "Times New Roman";">10</span></span><sup><span style="font-size: 19px; vertical-align: super; font-family: "Times New Roman";">-3</span></sup><span style="font-family: 宋體; font-size: 19px;">/℃；</span></span></p><p style="text-indent:19px;line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 19px;">退火鋁線：</span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 宋體; font-size: 19px;"> <span style="font-size: 16px; font-family: "Times New Roman";">=4.07</span>×<span style="font-size: 16px; font-family: "Times New Roman";">10</span></span><sup><span style="font-size: 19px; vertical-align: super; font-family: "Times New Roman";">-3</span></sup><span style="font-family: 宋體; font-size: 19px;">/℃ <span style="font-size: 16px; font-family: "Times New Roman";">(</span><span style="font-size: 16px; font-family: 宋體;">以上數(shù)據(jù)來(lái)之</span><span style="font-size: 16px; font-family: "Times New Roman";">GB/T 3048.2</span><span style="font-size: 16px; font-family: 宋體;">附錄</span><span style="font-size: 16px; font-family: "Times New Roman";">B)</span></span></span></p><p style="text-indent:19px;line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 19px;"><span style="font-size: 16px; font-family: 宋體;">硬銅線（粗，直徑大于等于</span><span style="font-size: 16px; font-family: "Times New Roman";">2mm</span><span style="font-size: 16px; font-family: 宋體;">）：</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 宋體; font-size: 19px;"> <span style="font-size: 16px; font-family: "Times New Roman";">=3.81</span>×<span style="font-size: 16px; font-family: "Times New Roman";">10</span></span><sup><span style="font-size: 19px; vertical-align: super; font-family: "Times New Roman";">-3</span></sup><span style="font-family: 宋體; font-size: 19px;">/℃；</span></span></p><p style="text-indent:19px;line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 19px;"><span style="font-size: 16px; font-family: 宋體;">硬銅線（細(xì)，直徑小于</span><span style="font-size: 16px; font-family: "Times New Roman";">2mm</span><span style="font-size: 16px; font-family: 宋體;">）：</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 宋體; font-size: 19px;"> <span style="font-size: 16px; font-family: "Times New Roman";">=3.77</span>×<span style="font-size: 16px; font-family: "Times New Roman";">10</span></span><sup><span style="font-size: 19px; vertical-align: super; font-family: "Times New Roman";">-3</span></sup><span style="font-family: 宋體; font-size: 19px;">/℃；<span style="font-size: 16px; font-family: "Times New Roman";">(</span><span style="font-size: 16px; font-family: 宋體;">以上數(shù)據(jù)來(lái)之</span><span style="font-size: 16px; font-family: "Times New Roman";">GB/T 3953)</span></span></span></p><p style="text-indent:19px;line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">PC36E</span><span style="font-size: 16px; font-family: 宋體;">面板上設(shè)置了上述</span><span style="font-size: 16px; font-family: "Times New Roman";">5</span><span style="font-size: 16px; font-family: 宋體;">種導(dǎo)體材料溫度系數(shù)</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 幼圓; font-size: 19px;">的選擇開關(guān)，</span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 幼圓; font-size: 19px;">的數(shù)值顯示在儀表屏幕上。</span></span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.7.4</span><span style="font-size: 16px; font-family: 幼圓;">儀表示值 </span></span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">X</span></sub></i><i><span style="font-family: "Times New Roman"; font-size: 19px;"> </span></i><span style="font-family: "Times New Roman"; font-size: 19px;">= </span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">20</span></sub></i><span style="font-family: "Times New Roman"; font-size: 19px;"> = </span><i><span style="font-family: "Times New Roman"; font-size: 19px;">K</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><i><span style="font-family: "Times New Roman"; font-size: 19px;">*R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><i></i></span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;">其中：</span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">20</span></sub></i><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">：</span><span style="font-size: 16px; font-family: "Times New Roman";">20</span>℃時(shí)的電阻值 </span><i><span style="font-family: "Times New Roman"; font-size: 19px;">R</span></i><i><sub><span style="font-family: "Times New Roman"; font-size: 19px; vertical-align: sub;">t</span></sub></i><span style="font-family: 幼圓; font-size: 19px;">：環(huán)境溫度為</span><span style="font-family: "Times New Roman"; font-size: 19px;">t </span><span style="font-family: 幼圓; font-size: 19px;">時(shí)的電阻值</span></span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">3.7.5 </span><span style="font-size: 19px; font-family: 幼圓;">溫度校正附加誤差</span></span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">3.7.5.1 </span><span style="font-size: 19px; font-family: 幼圓;">溫度校正靜態(tài)誤差：</span></span></p><p style="text-indent:28px;line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">在環(huán)境溫度充分穩(wěn)定</span><span style="font-size: 16px; font-family: "Times New Roman";">, </span><span style="font-size: 16px; font-family: 幼圓;">被測(cè)量試樣在測(cè)量環(huán)境中放置足夠長(zhǎng)時(shí)間后，溫度校正附加誤差為儀表測(cè)溫誤差與材料溫度系數(shù)</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">α</span><sub><span style="font-size: 19px; vertical-align: sub; font-family: "Times New Roman";">20</span></sub><span style="font-family: 幼圓; font-size: 19px;">的乘積：</span></span></p><p style="text-indent:19px;line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">在</span><span style="font-size: 16px; font-family: "Times New Roman";">15</span><span style="font-size: 16px; font-family: 幼圓;">—</span><span style="font-size: 16px; font-family: "Times New Roman";">25</span>℃范圍內(nèi)，溫度校正附加誤差不大于±<span style="font-size: 16px; font-family: "Times New Roman";">0.02</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">%</span><span style="font-family: 宋體; font-size: 19px;">;</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 19px;"> </span><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">在</span><span style="font-size: 16px; font-family: "Times New Roman";">10</span><span style="font-size: 16px; font-family: 幼圓;">—</span><span style="font-size: 16px; font-family: "Times New Roman";">30</span>℃范圍內(nèi)，溫度校正附加誤差不大于±<span style="font-size: 16px; font-family: "Times New Roman";">0.04</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">%</span><span style="font-family: 宋體; font-size: 19px;">;</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"> <span style="font-size: 16px; font-family: 幼圓;">在</span><span style="font-size: 16px; font-family: "Times New Roman";">0</span><span style="font-size: 16px; font-family: 幼圓;">—</span><span style="font-size: 16px; font-family: "Times New Roman";">40</span>℃范圍內(nèi)，溫度校正附加誤差不大于±<span style="font-size: 16px; font-family: "Times New Roman";">0.06</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">%</span><span style="font-family: 幼圓; font-size: 19px;">。</span></span></p><p style="line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">3.7.5.2 </span><span style="font-size: 19px; font-family: 幼圓;">溫度校正動(dòng)態(tài)誤差：</span></span></p><p style="text-indent:37px;line-height:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">在環(huán)境溫度有波動(dòng)，或被測(cè)量試樣的溫度與環(huán)境溫度有明顯差異時(shí)，由于試樣與周圍環(huán)境存在熱交換，試樣的溫度不穩(wěn)定，而且表面溫度與中心溫度不一致，位置處于試樣表面的溫度傳感器無(wú)法精確地測(cè)量試樣的真實(shí)溫度，造成溫度校正動(dòng)態(tài)誤差，超過</span><span style="font-size: 19px; font-family: "Times New Roman";">3.7.5.1</span><span style="font-size: 19px; font-family: 幼圓;">的允許誤差范圍</span><span style="font-size: 19px; font-family: "Times New Roman";">, </span><span style="font-size: 19px; font-family: 幼圓;">用戶應(yīng)該盡量避免上述情況的發(fā)生。</span></span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-size: 19px; font-family: "Times New Roman";">3.8</span></strong><span style="font-family: 幼圓; font-size: 19px;"> </span><strong><span style="font-family: 幼圓; font-size: 19px;">絕緣電阻</span></strong><strong></strong></span></p><p style="text-indent:28px;line-height:32px"><span style="font-family: 幼圓; font-size: 16px;">電源輸入端與機(jī)殼接地端及儀表測(cè)量端之間的絕緣電阻應(yīng)不小于<span style="font-size: 16px; font-family: "Times New Roman";">20M</span>Ω。</span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">3.9 </span><span style="font-size: 16px; font-family: 幼圓;">工頻耐壓</span></span></strong></span></p><p style="text-indent:28px;line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">電源輸入端與機(jī)殼接地端及儀表測(cè)量端之間應(yīng)承受</span><span style="font-size: 16px; font-family: "Times New Roman";">45H</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">z</span><span style="font-size: 19px; font-family: "Times New Roman";">-65H</span><span style="font-family: "Times New Roman"; font-size: 19px;">z</span><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">任意頻率下，實(shí)際正弦交流電壓</span><span style="font-size: 16px; font-family: "Times New Roman";">1.5</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">kV</span><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">歷時(shí)</span><span style="font-size: 16px; font-family: "Times New Roman";">1</span></span><span style="font-family: "Times New Roman"; font-size: 19px;">min</span><span style="font-family: 幼圓; font-size: 19px;">試驗(yàn)，無(wú)擊穿或飛弧現(xiàn)象。</span></span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">4 </span><span style="font-size: 16px; font-family: 幼圓;">使用方法及注意事項(xiàng)</span></span></strong><strong></strong></span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">4.1</span><span style="font-size: 16px; font-family: 幼圓;">面板功能介紹</span></span></strong><strong></strong></span></p><p style="line-height:32px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">4.1.1 PC36C</span><span style="font-size: 19px; font-family: 幼圓;">面板</span></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="text-align: center"><img style="max-width:800px;max-height:300%;" src="https://img48.chem17.com/9/20250107/638718327426532575306.png" title="a68494d6-a2b8-4a05-be4a-85d22830912a.png" alt="a68494d6-a2b8-4a05-be4a-85d22830912a.png"/></p><p style="margin-left:2px;line-height:31px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;"> 圖</span><span style="font-size: 19px; font-family: "Times New Roman";">1 PC36C</span><span style="font-size: 19px; font-family: 幼圓;">面板</span></span></p><p style="margin-left:2px;line-height:31px"><span style="font-family: 幼圓; font-size: 16px;">其中（<span style="font-size: 16px; font-family: "Times New Roman";">1</span>）液晶顯示屏（<span style="font-size: 16px; font-family: "Times New Roman";">2</span>）量程選擇開關(guān)</span></p><p style="text-indent:37px;line-height:31px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;">（<span style="font-size: 16px; font-family: "Times New Roman";">3</span>）<span style="font-size: 16px; font-family: 幼圓;">功能選擇開關(guān)</span> （</span><span style="font-family: "Times New Roman"; font-size: 19px;">4</span><span style="font-family: 幼圓; font-size: 19px;">）電源開關(guān)</span></span></p><p style="text-indent:37px;line-height:31px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">5</span>）校零、平衡旋鈕（<span style="font-size: 16px; font-family: "Times New Roman";">6</span>）讀數(shù)保持開關(guān)</span></p><p style="text-indent:37px;line-height:31px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">7</span>）測(cè)量電流正、反向選擇開關(guān)</span></p><p style="text-indent:37px;line-height:31px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">8</span>）測(cè)量狀態(tài)選擇開關(guān)</span></p><p style="text-indent:37px;line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">9</span>）電流輸出<span style="font-size: 16px; font-family: "Times New Roman";">C1</span>端（紅）</span></p><p style="text-indent:37px;line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">10</span>）電壓輸入<span style="font-size: 16px; font-family: "Times New Roman";">P1</span>、<span style="font-size: 16px; font-family: "Times New Roman";">P2</span>端</span></p><p style="text-indent:40px;line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">（</span><span style="font-size: 19px; font-family: "Times New Roman";">11</span><span style="font-size: 19px; font-family: 幼圓;">）電流輸出</span><span style="font-size: 19px; font-family: "Times New Roman";">C2</span><span style="font-size: 19px; font-family: 幼圓;">端（黑）</span></span></p><p style="text-indent:40px;line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">12</span>）溫度輸入開關(guān)（步進(jìn)值：<span style="font-size: 16px; font-family: "Times New Roman";">1</span>℃）</span></p><p style="text-indent:40px;line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">13</span>）溫度輸入開關(guān)（步進(jìn)值：<span style="font-size: 16px; font-family: "Times New Roman";">0.1</span>℃）</span></p><p style="text-indent:40px;line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">（</span><span style="font-size: 19px; font-family: "Times New Roman";">14</span><span style="font-size: 19px; font-family: 幼圓;">）溫度校正（</span><span style="font-size: 19px; font-family: "Times New Roman";">TC</span><span style="font-size: 19px; font-family: 幼圓;">）開啟或關(guān)閉（</span><span style="font-size: 19px; font-family: "Times New Roman";">TC OFF</span><span style="font-size: 19px; font-family: 幼圓;">）選擇開關(guān)</span></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">說(shuō)明：量程選擇開關(guān)（</span><span style="font-size: 16px; font-family: "Times New Roman";">2</span><span style="font-size: 16px; font-family: 幼圓;">）有</span><span style="font-size: 16px; font-family: "Times New Roman";">12</span><span style="font-size: 16px; font-family: 幼圓;">個(gè)檔位但只有</span><span style="font-size: 16px; font-family: "Times New Roman";">6</span><span style="font-size: 16px; font-family: 幼圓;">個(gè)撥動(dòng)位置，在旋鈕上有兩條刻度線分別指向上半部及下半部不同的檔位，當(dāng)測(cè)量狀態(tài)選擇“常</span></span><span style="font-family: "Times New Roman"; font-size: 19px;"> </span><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: 幼圓;">規(guī)"（常規(guī)測(cè)量電流）位置時(shí)，顯示屏上出現(xiàn)“</span><span style="font-size: 16px; font-family: "Times New Roman";">Nor</span><span style="font-size: 16px; font-family: 幼圓;">"字符，上半部</span><span style="font-size: 16px; font-family: "Times New Roman";">6</span><span style="font-size: 16px; font-family: 幼圓;">個(gè)檔位（藍(lán)色字體）有效；當(dāng)測(cè)量狀態(tài)選擇開關(guān)在“低電流"（低電流高靈敏度）位置時(shí)，顯示屏上出現(xiàn)“</span><span style="font-size: 16px; font-family: "Times New Roman";">Low</span><span style="font-size: 16px; font-family: 幼圓;">"字符，下半部</span><span style="font-size: 16px; font-family: "Times New Roman";">6</span><span style="font-size: 16px; font-family: 幼圓;">個(gè)檔位（黑色字體）有效。在轉(zhuǎn)換儀表量程時(shí)，顯示屏出現(xiàn)該檔位的量程滿度值</span><span style="font-size: 16px; font-family: "Times New Roman";">(2</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">20</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">200</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">2000)</span><span style="font-size: 16px; font-family: 幼圓;">與電阻單位（</span>Ω、</span><span style="font-family: "Times New Roman"; font-size: 19px;">m</span><span style="font-family: 幼圓; font-size: 19px;">Ω、μΩ）。</span></span></p><p style="line-height:25px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.2 </span><span style="font-family:幼圓">電阻測(cè)量步驟</span></span></strong><strong></strong></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.2</span></span><span style="font-family: 'Times New Roman';font-size: 19px">.</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">按</span><span style="font-family:Times New Roman">C1</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">P1</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">P2</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">C2</span><span style="font-family:幼圓">的順序連接儀表與測(cè)量夾具（見圖</span><span style="font-family:Times New Roman">3</span><span style="font-family:幼圓">），</span><span style="font-family:Times New Roman">C1</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">C2</span><span style="font-family:幼圓">為電流端，接在夾具的外側(cè)；</span><span style="font-family:Times New Roman">P1</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">P2</span><span style="font-family:幼圓">為電位端，接在夾具的內(nèi)側(cè)，紅色粗線為</span><span style="font-family:Times New Roman">C1</span><span style="font-family:幼圓">、細(xì)線為</span><span style="font-family:Times New Roman">P1</span><span style="font-family:幼圓">；黑色粗線為</span><span style="font-family:Times New Roman">C2</span><span style="font-family:幼圓">、細(xì)線為</span><span style="font-family:Times New Roman">P2</span><span style="font-family:幼圓">。由于本儀器具有較高的測(cè)量靈敏度，在連接</span><span style="font-family:Times New Roman">P1</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">P2</span><span style="font-family:幼圓">端時(shí)應(yīng)盡量避免人體接觸，以免人體加熱電壓結(jié)點(diǎn)，引起熱電偶效應(yīng)，由此產(chǎn)生的熱電勢(shì)將會(huì)對(duì)小電阻的測(cè)量造成影響。</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.2.2</span><span style="font-family:幼圓">儀器預(yù)熱及校零：將功能開關(guān)</span><span style="font-family:Times New Roman">(3)</span><span style="font-family:幼圓">撥至“校零"檔位，顯示屏上出現(xiàn)“</span><span style="font-family:Times New Roman">0.00</span><span style="font-family:幼圓">"字符，測(cè)量狀態(tài)選擇開關(guān)（</span><span style="font-family:Times New Roman">8</span><span style="font-family:幼圓">）撥至“低電流"位置，量程開關(guān)（</span><span style="font-family:Times New Roman">2</span><span style="font-family:幼圓">）撥至</span><span style="font-family:Times New Roman">200</span></span><span style="font-family: 幼圓;font-size: 19px">μΩ</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">檔位，此時(shí)儀器設(shè)定在最高靈敏度狀態(tài)，打開電源開關(guān)（</span><span style="font-family:Times New Roman">4</span><span style="font-family:幼圓">），通電預(yù)熱</span><span style="font-family:Times New Roman">3</span><span style="font-family:幼圓">分鐘后，調(diào)節(jié)校零、平衡旋鈕（</span><span style="font-family:Times New Roman">5</span><span style="font-family:幼圓">），使儀器示值為</span><span style="font-family:Times New Roman">00.00</span><span style="font-family:幼圓">。（儀表內(nèi)部校零）</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.2.3 </span><span style="font-family:幼圓">測(cè)量回路電勢(shì)平衡：將功能開關(guān)（</span><span style="font-family:Times New Roman">3</span><span style="font-family:幼圓">）由“校零"檔撥至“平衡"檔，顯示屏出現(xiàn)“</span><span style="font-family:Times New Roman">BAL</span><span style="font-family:幼圓">"字符，顯示屏上可能會(huì)出現(xiàn)數(shù)值，表示測(cè)量回路中存在不平衡的接觸電勢(shì)或熱電勢(shì)，再次調(diào)節(jié)調(diào)節(jié)校零、平衡旋鈕（</span><span style="font-family:Times New Roman">5</span><span style="font-family:幼圓">），使儀器示值在</span><span style="font-family:Times New Roman">0000</span><span style="font-family:幼圓">與</span><span style="font-family:Times New Roman">-0000</span><span style="font-family:幼圓">之間，可以抵消外部電勢(shì)的影響。應(yīng)該注意：測(cè)量回路中的不平衡電勢(shì)往往是由于連接過程中人體加熱電壓結(jié)點(diǎn)所致，它是一個(gè)不穩(wěn)定的數(shù)值，將隨著溫度平衡而緩慢消退，如顯示屏上的讀數(shù)較大，測(cè)量者應(yīng)靜待片刻，等到顯示屏上的讀數(shù)降至</span><span style="font-family:Times New Roman">5</span><span style="font-family:幼圓">個(gè)</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">字以下，再進(jìn)行調(diào)節(jié)平衡的操作。注意：平衡操作后如撥回</span><span style="font-family:幼圓">“校零"檔位，顯示屏上又會(huì)出現(xiàn)不為</span><span style="font-family:Times New Roman">0</span><span style="font-family:幼圓">的數(shù)值，該數(shù)值表示了儀表內(nèi)外的電勢(shì)不平衡度，</span></span><strong><span style="font-family: 幼圓;font-size: 19px">測(cè)量回路電勢(shì)平衡操作后不應(yīng)重復(fù)進(jìn)行校零操作</span></strong><span style="font-family: 幼圓;font-size: 19px">。</span><strong><span style="font-family: 幼圓;font-size: 19px">如果出現(xiàn)儀表在校零檔可以歸零，但平衡檔不</span></strong><strong></strong></p><p style="line-height:25px"><strong><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:Times New Roman">7</span></span></strong><strong></strong></p><p style="line-height:25px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">能歸零，且讀數(shù)大范圍變化的現(xiàn)象，通常不是儀表故障而是測(cè)量回路沒有接通，可能的原因是：</span> <span style="font-family:Times New Roman">a</span><span style="font-family:幼圓">．夾具上沒放試樣；</span><span style="font-family:Times New Roman">b. </span><span style="font-family:幼圓">夾具的電位接點(diǎn)與試樣沒有效接通；</span><span style="font-family:Times New Roman">c.</span><span style="font-family:幼圓">儀表的</span><span style="font-family:Times New Roman">P1</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">P2</span><span style="font-family:幼圓">端與夾具電位端之間的連線沒接通，或連接線斷線。 </span></span></strong></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">測(cè)量回路電勢(shì)平衡的實(shí)質(zhì)是消除測(cè)量回路熱電勢(shì)對(duì)測(cè)量結(jié)果的影響，與正反電流測(cè)量的作用是一樣的，如果確定采用正反向電流測(cè)量，用戶可以直接跳過回路電勢(shì)平衡這一操作步驟。</span></span></p><p style="margin-left:4px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.2.4 </span><span style="font-family:幼圓">電阻值測(cè)量：將功能開關(guān)撥至</span><span style="font-family:Times New Roman">1.00I</span><span style="font-family:幼圓">（額定電流測(cè)量）檔位，顯示屏出現(xiàn)“</span><span style="font-family:Times New Roman">1.00I</span><span style="font-family:幼圓">"字符，顯示屏上出現(xiàn)的數(shù)值即為被測(cè)電阻值。如果顯示屏出現(xiàn)“</span><span style="font-family:Times New Roman">1</span></span><span style="font-family: 'Times New Roman';font-size: 19px">—</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">"說(shuō)明測(cè)量欠量程，應(yīng)將量程開關(guān)（</span><span style="font-family:Times New Roman">2</span><span style="font-family:幼圓">）順時(shí)針旋轉(zhuǎn)，直至儀器出現(xiàn)示值；如讀數(shù)小于</span><span style="font-family:Times New Roman">1800</span><span style="font-family:幼圓">個(gè)字，說(shuō)明測(cè)量過量程，應(yīng)逆時(shí)針旋轉(zhuǎn)量程開關(guān)，以保證測(cè)量具有較高的分辨力。</span></span><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">如量程合適，儀器示值應(yīng)在</span><span style="font-family:Times New Roman">1800</span></span></strong><strong><span style="font-family: 'Times New Roman';font-size: 19px">—</span></strong><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">19999</span><span style="font-family:幼圓">之間（忽略小數(shù)點(diǎn)）。量程的選擇，應(yīng)保證測(cè)量結(jié)果有最多的有效位</span></span></strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">。舉例：用</span><span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">米夾具測(cè)</span><span style="font-family:Times New Roman">95</span></span><span style="font-family: 'Times New Roman';font-size: 19px">mm</span><sup><span style="font-family: 'Times New Roman';font-size: 19px;vertical-align: super">2</span></sup><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">的銅導(dǎo)體，在</span><span style="font-family:Times New Roman">200</span></span><span style="font-family: 幼圓;font-size: 19px">μΩ</span><span style="font-family: 'Times New Roman';font-size: 19px">10A</span><span style="font-family: 幼圓;font-size: 19px">量程測(cè)得的結(jié)果為</span><span style="font-family: 'Times New Roman';font-size: 19px">181.</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">54</span></span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">μΩ</span><span style="font-family:宋體">,</span><span style="font-family:幼圓">而在</span></span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">2000</span></span><span style="font-family: 幼圓;font-size: 19px">μΩ</span><span style="font-family: 'Times New Roman';font-size: 19px">10A</span><span style="font-family: 幼圓;font-size: 19px">量程得的結(jié)果為</span><span style="font-family: 'Times New Roman';font-size: 19px">181.</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5</span></span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">μΩ</span><span style="font-family:宋體">,</span><span style="font-family:幼圓">在</span></span><span style="font-family: 'Times New Roman';font-size: 19px">2m</span><span style="font-family: 幼圓;font-size: 19px">Ω</span><span style="font-family: 'Times New Roman';font-size: 19px">1A</span><span style="font-family: 幼圓;font-size: 19px">量程得的結(jié)果為</span><span style="font-family: 'Times New Roman';font-size: 19px">0.1815</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">m</span></span><span style="font-family: 幼圓;font-size: 19px">Ω</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">，后</span><span style="font-family:Times New Roman">2</span><span style="font-family:幼圓">種情況，為</span><span style="font-family:Times New Roman">4</span><span style="font-family:幼圓">位有效讀數(shù)，顯然沒有第一種情況</span><span style="font-family:Times New Roman">5</span><span style="font-family:幼圓">位讀數(shù)結(jié)果</span></span><span style="font-family: 'Times New Roman';font-size: 19px">181.</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">54</span></span><span style="font-family: 幼圓;font-size: 19px">μΩ更精確。</span></p><p style="text-indent:37px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">根據(jù)被測(cè)器件的性質(zhì)及電阻值范圍，選擇合適的測(cè)量狀態(tài)以及相應(yīng)的測(cè)量檔位，儀器在</span><span style="font-family:幼圓">“常規(guī)"測(cè)量狀態(tài)（常規(guī)測(cè)量電流）有六檔量程，具有測(cè)量準(zhǔn)確性高、抗干擾性能好的特點(diǎn)；在“低電流"測(cè)量狀態(tài)（低測(cè)量電流、高靈敏度）也有六檔量程</span></span><span style="font-family: 幼圓;font-size: 19px">，具有較高的測(cè)量靈敏度與分辨力。測(cè)量電流的選擇還必須符合</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">GB/T3048.4</span></span><span style="font-family: 幼圓;font-size: 19px">的規(guī)定，銅導(dǎo)線的電流密度不得大于</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">1A/mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">,</span></span><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">鋁導(dǎo)線的電流密度不得大于</span></span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">0.5A/mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px">。</span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">以</span></span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">1m</span></span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">夾具為例，常見導(dǎo)體推薦的測(cè)量狀態(tài)、量程、以及電流倍率設(shè)置見表</span><span style="font-family:宋體">5</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">表</span><span style="font-family:宋體">5</span></span></p><div id="iqaqewgi6e" class="tabledivclass" style="width: 99%; float: left;"><table border="1" cellspacing="0" align="left" style="max-width: 748px;"><tbody><tr style="height:23px" class="firstRow"><td width="324" valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="text-indent:37px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">電線電纜材質(zhì)與截面積</span></p></td><td width="120" valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">測(cè)量狀態(tài)</span></p></td><td width="144" valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="text-indent:37px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">量程</span></p></td><td width="96" valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px">電流倍率</span></p></td></tr><tr style="height:27px"><td width="324" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 'Times New Roman';font-size: 19px">≥</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">95mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px">銅線，</span><span style="font-family: 'Times New Roman';font-size: 19px">≥</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">150mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px">鋁線</span></p></td><td width="120" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">低電流</span></p></td><td width="144" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:19px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">10A 200</span></span><span style="font-family: 'Times New Roman';font-size: 19px">μ?</span></p></td><td width="96" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">1.00I</span></span></p></td></tr><tr style="height:31px"><td width="324" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">16-70mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">銅線，</span><span style="font-family:Times New Roman">25-120mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px">鋁線</span></p></td><td width="120" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">常規(guī)電流</span></p></td><td width="144" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:19px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">10A 2000</span></span><span style="font-family: 'Times New Roman';font-size: 19px">μ?</span></p></td><td width="96" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">1.00I</span></span></p></td></tr><tr style="height:30px"><td width="324" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">10m</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">銅線，</span><span style="font-family:Times New Roman">16mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px">鋁線</span></p></td><td width="120" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">常規(guī)電流</span></p></td><td width="144" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:19px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">10A 2000</span></span><span style="font-family: 'Times New Roman';font-size: 19px">μ?</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:'Times New Roman'"> </span></span></p></td><td width="96" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">0.707I</span></span></p></td></tr><tr style="height:30px"><td width="324" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">1.5-6mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">銅線，</span><span style="font-family:Times New Roman">2.5-10mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px">鋁線</span></p></td><td width="120" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">常規(guī)電流</span></p></td><td width="144" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:28px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">1A 20m</span></span><span style="font-family: 'Times New Roman';font-size: 19px">?</span></p></td><td width="96" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">1.00I</span></span></p></td></tr><tr style="height:30px"><td width="324" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">1.0m</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">銅線，</span><span style="font-family:Times New Roman">1.5mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px">鋁線</span></p></td><td width="120" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體"> </span><span style="font-family:幼圓">低電流</span></span></p></td><td width="144" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體"> </span><span style="font-family:宋體">400mA 20m</span></span><span style="font-family: 'Times New Roman';font-size: 19px">?</span></p></td><td width="96" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體"> </span><span style="font-family:宋體">1.00I</span></span></p></td></tr><tr style="height:36px"><td width="324" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">0.5-0.75mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">銅線，</span><span style="font-family:Times New Roman">1.0mm</span></span><sup><span style="font-family: 幼圓;font-size: 19px;vertical-align: super"><span style="font-family:Times New Roman">2</span></span></sup><span style="font-family: 幼圓;font-size: 19px">鋁線</span></p></td><td width="120" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">常規(guī)電流</span></p></td><td width="144" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:19px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">400mA 200m</span></span><span style="font-family: 'Times New Roman';font-size: 19px">?</span></p></td><td width="96" valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="text-indent:9px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:宋體">1.00I</span></span></p></td></tr></tbody></table></div><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman"><br/></span></span></strong></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman"><br/></span></span></strong></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman"><br/></span></span></strong></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman"><br/></span></span></strong></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman"><br/></span></span></strong></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman"><br/></span></span></strong></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman"><br/></span></span></strong></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman"><br/></span></span></strong></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.3 </span><span style="font-family:幼圓">讀數(shù)保持：</span></span></strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">將讀數(shù)保持開關(guān)（</span><span style="font-family:Times New Roman">6</span><span style="font-family:幼圓">）撥至“保持"位置，顯示屏上出現(xiàn)“</span><span style="font-family:Times New Roman">H</span><span style="font-family:幼圓">"字符，儀器示值鎖定，方便用戶記錄數(shù)據(jù)，如要連續(xù)測(cè)量，讀數(shù)保持開關(guān)應(yīng)置于“測(cè)量"位置。</span></span></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.4</span><span style="font-family:幼圓">反向電流下的電阻測(cè)量：</span></span></strong><span style="font-family: 幼圓;font-size: 19px">在進(jìn)行電線電纜導(dǎo)體直流電阻測(cè)量時(shí)，如被測(cè)電阻小</span></p><p style="line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">8</span></span></p><p style="line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">于</span><span style="font-family:Times New Roman">0.1</span></span><span style="font-family: 幼圓;font-size: 19px">Ω</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">，按國(guó)家標(biāo)準(zhǔn)的規(guī)定應(yīng)進(jìn)行反向電流下的電阻測(cè)量，以進(jìn)一步抵消測(cè)量回路熱電勢(shì)影響。將測(cè)量電流正、反向選擇開關(guān)（</span><span style="font-family:Times New Roman">7</span><span style="font-family:幼圓">）撥至</span><span style="font-family:Times New Roman">I-</span><span style="font-family:幼圓">（反向電流）位置，顯示屏</span></span></p><p style="line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">上電阻值的前面將出現(xiàn)負(fù)號(hào)，表示該數(shù)值是在反向電流下測(cè)得的數(shù)據(jù)，將這個(gè)數(shù)據(jù)的絕對(duì)值與</span><span style="font-family:Times New Roman">I+</span><span style="font-family:幼圓">（正向電流）下測(cè)得的數(shù)據(jù)相加后除以</span><span style="font-family:Times New Roman">2</span><span style="font-family:幼圓">，作為最終的測(cè)量結(jié)果，與單向電流下的測(cè)量的結(jié)果相比，該數(shù)值具有更高的準(zhǔn)確度與可靠性。</span></span></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.5 </span><span style="font-family:幼圓">倍率電流下的電阻測(cè)量：</span></span></strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">由于被測(cè)銅線與鋁線有較大的溫度系數(shù)，測(cè)量過程中如果因?yàn)殡娏鬟^大而加熱導(dǎo)線，將會(huì)引起嚴(yán)重的測(cè)量誤差，按國(guó)家標(biāo)準(zhǔn)的規(guī)定必須用比例為</span><span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">：</span><span style="font-family:Times New Roman">1.41</span><span style="font-family:幼圓">的兩個(gè)測(cè)量電流分別測(cè)試樣電阻值，以判定是否發(fā)生溫升超標(biāo)顯現(xiàn)象。把功能開關(guān)（</span><span style="font-family:Times New Roman">3</span><span style="font-family:幼圓">）撥至</span><span style="font-family:Times New Roman">1.41 I (1.41</span><span style="font-family:幼圓">倍額定電流</span><span style="font-family:Times New Roman">)</span><span style="font-family:幼圓">檔位，顯示屏出現(xiàn)“</span><span style="font-family:Times New Roman">1.41I</span><span style="font-family:幼圓">"字符，將所得數(shù)值與</span><span style="font-family:Times New Roman">1.00 I</span><span style="font-family:幼圓">（額定電流）下的測(cè)量結(jié)果相比較，如變化量小于標(biāo)準(zhǔn)規(guī)定的數(shù)值，表明在</span><span style="font-family:Times New Roman">1.00 I</span><span style="font-family:幼圓">條件下的測(cè)量結(jié)果有效，反之則表明測(cè)量電流過大，數(shù)據(jù)無(wú)效，必須減小測(cè)量電流。可以再一次把功能開關(guān)撥至</span><span style="font-family:Times New Roman">0.707 I </span><span style="font-family:幼圓">（</span><span style="font-family:Times New Roman">0.707</span><span style="font-family:幼圓">倍額定電流）檔位，顯示屏出現(xiàn)“</span><span style="font-family:Times New Roman">0.707I</span><span style="font-family:幼圓">"字符，將所得數(shù)值與</span><span style="font-family:Times New Roman">1.00 I</span><span style="font-family:幼圓">（額定電流）下的測(cè)量結(jié)果相比較，如變化量小于標(biāo)準(zhǔn)規(guī)定的數(shù)值，表明在</span><span style="font-family:Times New Roman">0.707 I</span><span style="font-family:幼圓">條件下的測(cè)量結(jié)果有效，反之則表明測(cè)量電流仍然過大，必須改變量程以減小額定電流，或?qū)y(cè)量狀態(tài)選擇開關(guān)置于“低電流"位置。</span></span></p><p style="margin-left:0;text-indent:0;line-height:29px"><span style="font-family: 幼圓;font-size: 19px">4.6 </span><strong><span style="font-family: 幼圓;font-size: 19px">銅、鋁導(dǎo)線溫度校正</span></strong><span style="font-family: 幼圓;font-size: 19px">（</span><span style="font-family: 'Times New Roman';font-size: 19px">PC36C</span><span style="font-family: 幼圓;font-size: 19px">）：</span></p><p style="text-indent:37px;line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">在測(cè)量銅、鋁導(dǎo)線時(shí)將溫度校正開關(guān)</span><span style="font-family:Times New Roman">(14)</span><span style="font-family:幼圓">置于“校正（</span><span style="font-family:Times New Roman">TC</span><span style="font-family:幼圓">）"位置，顯示屏出現(xiàn)“</span><span style="font-family:Times New Roman">TC</span><span style="font-family:幼圓">"字符，表示進(jìn)入帶溫度校正的測(cè)量模式，然后人工輸入環(huán)境溫度值，用分度值為</span><span style="font-family:Times New Roman">0.1</span></span><span style=";font-family:幼圓;font-size:19px">℃的水銀溫度計(jì)或其他分辨力不低于</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">0.1</span></span><span style=";font-family:幼圓;font-size:19px">℃的溫度計(jì)測(cè)量環(huán)境溫度，然后</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">將溫度輸入開關(guān)（</span><span style="font-family:Times New Roman">12</span><span style="font-family:幼圓">）、（</span><span style="font-family:Times New Roman">13</span><span style="font-family:幼圓">）設(shè)置為環(huán)境溫度，其中開關(guān)（</span><span style="font-family:Times New Roman">12</span><span style="font-family:幼圓">）的設(shè)置范圍為</span><span style="font-family:Times New Roman">15-26</span></span><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">℃，步進(jìn)值為</span><span style="font-family:宋體">1</span><span style="font-family:幼圓">℃。</span></span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">開關(guān)（</span><span style="font-family:Times New Roman">13</span><span style="font-family:幼圓">）的設(shè)置范圍為</span><span style="font-family:Times New Roman">0.0-1.1</span></span><span style=";font-family:幼圓;font-size:19px">℃，步進(jìn)值為</span><span style=";font-family:'Times New Roman';font-size:19px">0.1℃</span><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">，環(huán)境溫度設(shè)置值應(yīng)為二者之和，此時(shí)儀表示值為該導(dǎo)線在基準(zhǔn)溫度</span><span style="font-family:宋體">20</span><span style="font-family:幼圓">℃下的電阻值，免去了用戶根據(jù)公式換算的麻煩。</span></span></p><p style="line-height:29px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.7</span></span></strong><strong><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">自動(dòng)溫度測(cè)量以及溫度校正</span><span style="font-family:Times New Roman">(PC36E)</span><span style="font-family:幼圓">：</span></span></strong><strong><span style="font-family: 幼圓;font-size: 19px"> </span></strong><strong></strong></p><p style="line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.7.1</span><span style="font-family:幼圓">溫度傳感器的連接與安裝</span></span></p><p style="text-indent:37px;line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">將儀表附帶的溫度傳感器的引線插頭插入面板上的傳感器插座（</span><span style="font-family:Times New Roman">15</span><span style="font-family:幼圓">），</span><span style="font-family:Times New Roman">A</span><span style="font-family:幼圓">與</span><span style="font-family:Times New Roman">B</span><span style="font-family:幼圓">兩個(gè)傳感器分別跨放、懸掛在被測(cè)試樣的左右兩邊（見圖</span><span style="font-family:Times New Roman">3</span><span style="font-family:幼圓">），距離</span><span style="font-family:Times New Roman">60-70cm</span><span style="font-family:幼圓">為最佳，可以分別采樣試樣兩端的溫度，消除由于試樣兩端的溫度不同而造成的誤差。</span></span></p><p style="text-indent:37px;line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">注意保持傳感器的平直安放，不要歪斜，傳感器的中心必須和被測(cè)試樣的中心位置重合。尼龍帶緊貼被測(cè)試樣</span><span style="font-family:Times New Roman">(</span><span style="font-family:幼圓">見圖</span><span style="font-family:Times New Roman">4)</span><span style="font-family:幼圓">，安裝有微型鉑電阻表面</span></span><span style="font-family: 幼圓; font-size: 19px; text-indent: 644px;">必須直接接觸到試樣的金屬部分，而不要放置在絕緣外皮上。</span></p><p style="text-indent:37px;line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">將溫度校正開關(guān)</span><span style="font-family:Times New Roman">(14)</span><span style="font-family:幼圓">置于“校正（</span><span style="font-family:Times New Roman">TC</span><span style="font-family:幼圓">）"位置，顯示屏出現(xiàn)“</span><span style="font-family:Times New Roman">TC</span><span style="font-family:幼圓">"字符，表示</span></span></p><p style="line-height:29px"><span style="font-family: 幼圓;font-size: 19px"> </span><span style="font-family: 幼圓;font-size: 19px">儀表進(jìn)入</span><span style=";font-family:幼圓;font-size:19px">溫度測(cè)量以及溫度校正</span><span style="font-family: 幼圓;font-size: 19px">模式。</span></p><p> </p><p style="text-align: center"><img style="max-width:800px;max-height:300%;" src="https://img54.chem17.com/9/20250107/638718328986265497117.png" title="bb448746-a71d-4710-9bc0-3e2f3772da6e.png" alt="bb448746-a71d-4710-9bc0-3e2f3772da6e.png"/></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">圖</span><span style="font-family:Times New Roman">3 PC36E</span><span style="font-family:幼圓">與測(cè)量夾具接線以及溫度傳感器安裝圖</span></span></p><p style="text-align: center"><img style="max-width:800px;max-height:300%;" src="https://img44.chem17.com/9/20250107/638718329957843381216.png" title="2a13c8d4-fbd2-4b92-ae5e-1e706105f5ee.png" alt="2a13c8d4-fbd2-4b92-ae5e-1e706105f5ee.png"/></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">圖</span><span style="font-family:Times New Roman">4 </span><span style="font-family:幼圓">溫度傳感器結(jié)構(gòu)</span></span></p><p style="line-height:29px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.7.2 </span><span style="font-family:幼圓">帶自動(dòng)溫度校正的導(dǎo)體電阻測(cè)量</span></span></p><p style="line-height:28px"><br/></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">將儀表的溫度系數(shù)選擇開關(guān)（</span><span style="font-family:Times New Roman">16</span><span style="font-family:幼圓">）置于被測(cè)試樣的材料種類，如軟銅線，顯示屏</span></span></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px">上將出現(xiàn)軟銅線的</span><span style=";font-family:'Times New Roman';font-size:19px">α</span><sub><span style=";font-family:宋體;font-size:19px;vertical-align:sub"><span style="font-family:Times New Roman">20</span></span></sub><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">數(shù)值</span><span style="font-family:幼圓">“</span><span style="font-family:Times New Roman">.00393</span></span><span style="font-family: 'Times New Roman';font-size: 19px">"</span><span style="font-family: 幼圓;font-size: 19px">，</span><span style=";font-family:幼圓;font-size:19px"> <span style="font-family:幼圓">此時(shí)儀表示值為該試樣在基準(zhǔn)溫度</span></span><span style=";font-family:'Times New Roman';font-size:19px">20</span><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">℃下的電阻值。注意：如果被測(cè)試樣的材料是本儀表設(shè)定的</span><span style="font-family:宋體">5</span><span style="font-family:幼圓">種常用材料之一（見</span></span><span style=";font-family:'Times New Roman';font-size:19px">3.7.3</span><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">節(jié)）</span><span style="font-family:Times New Roman">,</span><span style="font-family:幼圓">儀表是自動(dòng)測(cè)溫、自動(dòng)校正的，不必要單獨(dú)進(jìn)行</span></span><span style="font-family: 幼圓;font-size: 19px">導(dǎo)體溫度測(cè)量這個(gè)步驟。</span></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.7.3 </span><span style="font-family:幼圓">導(dǎo)體溫度測(cè)量</span></span></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">將儀表的溫度系數(shù)選擇開關(guān)（</span><span style="font-family:Times New Roman">16</span><span style="font-family:幼圓">）置于“導(dǎo)體溫度測(cè)量"位置，顯示屏上出現(xiàn)</span></span><span style=";font-family:幼圓;font-size:19px">℃符號(hào)，</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">儀表示值為被測(cè)導(dǎo)體的溫度，為</span><span style="font-family:Times New Roman">A</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">B</span><span style="font-family:幼圓">兩個(gè)傳感器位置實(shí)際溫度的平均值。如果</span></span><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">被測(cè)試樣的材料在本儀表設(shè)定的</span><span style="font-family:宋體">5</span><span style="font-family:幼圓">種材料之外，則可以通過</span></span><span style="font-family: 幼圓;font-size: 19px">導(dǎo)體溫度測(cè)量后，再根據(jù)該材料的溫度系數(shù)，用公式換算。</span></p><p style="line-height:28px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.8</span><span style="font-family:幼圓">成盤線纜的測(cè)量</span></span></strong><strong></strong></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.8.1</span><span style="font-family:幼圓">成盤電阻測(cè)量</span></span></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">測(cè)量成盤線纜電阻</span><span style="font-family:Times New Roman">, </span><span style="font-family:幼圓">必須選配本公司提供的成盤電纜測(cè)試鉗，紅、黑各一個(gè)，</span><span style="font-family:Times New Roman">C1</span><span style="font-family:幼圓">與</span><span style="font-family:Times New Roman">P1</span><span style="font-family:幼圓">兩根紅線接紅色測(cè)試鉗；</span><span style="font-family:Times New Roman">C2</span><span style="font-family:幼圓">與</span><span style="font-family:Times New Roman">P2</span><span style="font-family:幼圓">兩根黑線接黑色測(cè)試鉗，夾在成盤線纜的兩端，即可用</span><span style="font-family:Times New Roman">4</span><span style="font-family:幼圓">線測(cè)量的方法測(cè)量成盤電阻值。</span></span></p><p style="line-height:28px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">4.8.2</span><span style="font-family:幼圓">半成品成盤線纜上</span><span style="font-family:Times New Roman">1m</span><span style="font-family:幼圓">導(dǎo)體電阻測(cè)量</span></span></p><p style="text-indent:37px;line-height:28px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">半成品成盤線纜（未包封絕緣外皮）必須進(jìn)行</span><span style="font-family:Times New Roman">1m</span><span style="font-family:幼圓">導(dǎo)體電阻測(cè)量，以判定截面是否合格，通常的做法是：截取</span><span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">米多長(zhǎng)的樣品，送實(shí)驗(yàn)室放置數(shù)小時(shí)后再進(jìn)行檢測(cè)，這個(gè)方法不但耗工費(fèi)時(shí)，還會(huì)損耗寶貴的有色金屬。太歐電子的</span><span style="font-family:Times New Roman">PC36E</span><span style="font-family:幼圓">可以在</span><span style="font-family:Times New Roman">0-40</span></span><span style="font-family: 幼圓;font-size: 19px">℃范圍內(nèi)準(zhǔn)確地進(jìn)行導(dǎo)體電阻測(cè)量和溫度校正，可以基本適應(yīng)生產(chǎn)車間的環(huán)境條件，為實(shí)現(xiàn)無(wú)損耗導(dǎo)體電阻測(cè)量創(chuàng)造了條件。雖然目前國(guó)內(nèi)廠家電纜生產(chǎn)車間一般沒有溫度控制，四季的溫度變化很大，但晝夜的溫度變化并不大，自然條件下的溫度變化速率比較緩慢，符合</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">PC36E</span><span style="font-family:幼圓">對(duì)環(huán)境條件中溫度的絕對(duì)值要求不高，只要短時(shí)間內(nèi)溫度穩(wěn)定性好的特點(diǎn)。</span></span></p><p style="text-indent:37px;line-height:28px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">半成品成盤線纜必須冷卻到與環(huán)境溫度一致時(shí)方可進(jìn)行測(cè)量。為了方便移動(dòng)操作，可以將圖</span><span style="font-family:Times New Roman">3</span><span style="font-family:幼圓">所示的儀表與</span><span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">米夾具，安裝在簡(jiǎn)易的手推小車上?，F(xiàn)場(chǎng)應(yīng)避免電爐、紅外線燈、陽(yáng)光直射等熱源，以及鼓風(fēng)機(jī)等強(qiáng)烈空氣對(duì)流。</span></span></p><p style="line-height:28px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5 </span><span style="font-family:幼圓">注意事項(xiàng)</span></span></strong><strong></strong></p><p style="line-height:28px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.1</span><span style="font-family:幼圓">對(duì)試驗(yàn)環(huán)境的要求</span></span></strong><strong></strong></p><p style="text-indent:37px;line-height:28px"><span style=";font-family:幼圓;font-size:19px">由于被測(cè)的試樣通常有很大的溫度系數(shù)，測(cè)溫環(huán)節(jié)的些小誤差，往往會(huì)占據(jù)綜合誤差的絕大部分，因此，無(wú)論是人工測(cè)溫、手動(dòng)輸入，還是自動(dòng)測(cè)溫自動(dòng)校正，為了保證測(cè)量和換算的準(zhǔn)確度，必須保證環(huán)境溫度均衡，儀表及被測(cè)試樣和夾具應(yīng)避免陽(yáng)光直射、空調(diào)風(fēng)直吹，被測(cè)試樣在該環(huán)境下放置足夠長(zhǎng)的時(shí)間，達(dá)到充分熱</span></p><p style="line-height:28px"><span style=";font-family:幼圓;font-size:19px"> <span style="font-family:宋體">11</span></span></p><p style="line-height:25px"><span style=";font-family:幼圓;font-size:19px">平衡。為了減少溫度校正的動(dòng)態(tài)誤差，必須盡最大努力減少環(huán)境溫度的波動(dòng)，在有</span></p><p style="line-height:25px"><span style=";font-family:幼圓;font-size:19px">精密測(cè)溫傳感器以及準(zhǔn)確的溫度換算系數(shù)的情況下</span><span style=";font-family:'Times New Roman';font-size:19px"><span style="font-family:幼圓">（</span>PC36E<span style="font-family:幼圓">）</span></span><span style=";font-family:幼圓;font-size:19px">，</span><strong><span style=";font-family:幼圓;font-size:19px">環(huán)境溫度的穩(wěn)定性比環(huán)境溫度的絕對(duì)值對(duì)測(cè)量結(jié)果的影響更大。</span></strong><strong></strong></p><p style="text-indent:37px;line-height:25px"><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">應(yīng)該注意：普通的</span><span style="font-family:幼圓">“啟動(dòng)</span><span style="font-family:宋體">-</span><span style="font-family:幼圓">停止"式空調(diào)，啟動(dòng)與停止之間有</span></span><span style=";font-family:'Times New Roman';font-size:19px">1-2℃</span><span style=";font-family:幼圓;font-size:19px">的溫度差異，會(huì)造成較大的溫度校正動(dòng)態(tài)誤差，這是因?yàn)闇y(cè)溫儀表的傳感器與被測(cè)試樣的熱慣性有很大不同，迅速變化的環(huán)境溫度使得溫度傳感器無(wú)法正確測(cè)量到試樣的真實(shí)溫度，</span><strong><span style=";font-family:幼圓;font-size:19px">建議進(jìn)行導(dǎo)體電阻試驗(yàn)的實(shí)驗(yàn)室的溫度控制，使用中央空調(diào)或變頻空調(diào)。</span></strong><strong></strong></p><p style="text-indent:37px;line-height:25px"><span style=";font-family:幼圓;font-size:19px">要求導(dǎo)體電阻試驗(yàn)的準(zhǔn)確性很高時(shí)，推薦采用油浴或水浴測(cè)量夾具（將導(dǎo)線與夾具置于變壓器油或純水之中），可以大幅度降低環(huán)境溫度波動(dòng)對(duì)測(cè)量的影響，減少測(cè)量電流對(duì)導(dǎo)線的加熱效應(yīng)，并提高測(cè)溫準(zhǔn)確度和儀表讀數(shù)的穩(wěn)定度。</span></p><p style="line-height:25px"><span style=";font-family:'Times New Roman';font-size:19px">5.2</span><strong><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">溫度校正功能的適用范圍</span><span style="font-family:宋體">:</span></span></strong><strong></strong></p><p style="text-indent:37px;line-height:25px"><span style=";font-family:幼圓;font-size:19px">應(yīng)該特別注意的是：</span><strong><span style=";font-family:幼圓;font-size:19px">溫度校正功能僅對(duì)被測(cè)電阻的材料為溫度系數(shù)已知的特定材質(zhì)時(shí)才有效（</span></strong><strong><span style=";font-family:幼圓;font-size:19px"><span style="font-family:Times New Roman">PC36C</span><span style="font-family:幼圓">為純銅純鋁、</span><span style="font-family:Times New Roman">PC36E</span><span style="font-family:幼圓">為規(guī)定的</span><span style="font-family:Times New Roman">5</span><span style="font-family:幼圓">種常用材料）</span></span></strong><span style=";font-family:幼圓;font-size:19px">，</span><strong><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">除此之外，當(dāng)被測(cè)對(duì)象為標(biāo)準(zhǔn)電阻、接觸電阻、或其他實(shí)體電阻，被測(cè)電阻的材質(zhì)為銅合金、鋁合金、鐵合金、或者是摻有雜銅雜鋁的銅、鋁線等等，尤其是儀表送檢，用標(biāo)準(zhǔn)器檢定時(shí)，儀表的溫度校正開關(guān)（</span><span style="font-family:宋體">14</span><span style="font-family:幼圓">）必須置于“關(guān)"位置</span></span></strong><span style=";font-family:幼圓;font-size:19px">，此時(shí)，</span><span style="font-family: 幼圓;font-size: 19px">顯示屏出現(xiàn)</span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">“</span><span style="font-family:Times New Roman">TC OFF</span><span style="font-family:幼圓">"字符，</span></span><span style=";font-family:幼圓;font-size:19px">儀表的溫度校正功能無(wú)效，進(jìn)入常規(guī)低電阻表的測(cè)量模式，儀表</span></p><p style="line-height:25px"><span style=";font-family:幼圓;font-size:19px"><span style="font-family:幼圓">的示值為被測(cè)電阻在當(dāng)時(shí)環(huán)境溫度下的實(shí)際電阻值。這些溫度系數(shù)與特定材質(zhì)不同的電阻測(cè)量，如果誤用了特定材質(zhì)的溫度校正系數(shù)，將會(huì)造成極大的測(cè)量誤差，儀表的檢定也會(huì)得出錯(cuò)誤的結(jié)果。</span> </span></p><p style="margin-right:12px;line-height:25px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.3</span><span style="font-family:幼圓">其他注意事項(xiàng)</span></span></strong><strong></strong></p><p style="margin-right:12px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.3.1</span><span style="font-family:幼圓">本儀表是電線電纜導(dǎo)體電阻試驗(yàn)專用設(shè)備，采用了很多新技術(shù)，具有一些其他數(shù)字式低阻表所不具備的性能和特點(diǎn)，為了能夠安全、正確地操作本儀表，使得測(cè)量工作順利進(jìn)行，</span></span><strong><span style="font-family: 幼圓;font-size: 19px">用戶在使用前務(wù)必仔細(xì)閱讀本使用說(shuō)明書，</span></strong><span style="font-family: 幼圓;font-size: 19px">如仍有不明白的地方，歡迎致電本公司咨詢。</span></p><p style="margin-right:12px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.3.2 </span><span style="font-family:幼圓">在進(jìn)行電線電纜導(dǎo)體直流電阻測(cè)量時(shí)</span><span style="font-family:Times New Roman">, </span><span style="font-family:幼圓">環(huán)境溫度在國(guó)家標(biāo)準(zhǔn)規(guī)定的</span><span style="font-family:Times New Roman">15-25</span></span><span style="font-family: 幼圓;font-size: 19px">℃</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">范圍內(nèi)，儀表保證第</span><span style="font-family:Times New Roman">3.3</span><span style="font-family:幼圓">條所示的測(cè)量準(zhǔn)確度。在</span><span style="font-family:Times New Roman">0-40</span></span><span style="font-family: 幼圓;font-size: 19px">℃</span><span style="font-family: 幼圓;font-size: 19px">環(huán)境溫度下，儀表可以正常工作，但測(cè)量準(zhǔn)確度降低一個(gè)等級(jí)。</span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.3.3 </span></span><strong><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">在</span><span style="font-family:Times New Roman">C1</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">C2</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">P1</span><span style="font-family:幼圓">、</span><span style="font-family:Times New Roman">P2</span><span style="font-family:幼圓">端懸空，或測(cè)試夾具上沒有試樣時(shí)，功能開關(guān)（</span><span style="font-family:Times New Roman">3</span><span style="font-family:幼圓">）必須置于“校零"檔位，測(cè)量結(jié)束時(shí)也應(yīng)先將功能開關(guān)置于</span></span></strong><strong><span style="font-family: 'Times New Roman';font-size: 19px">“</span></strong><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">校零</span><span style="font-family:幼圓">" 檔位，然后斷開被測(cè)器件，不得在測(cè)量狀態(tài)下將負(fù)載開路（取走被測(cè)試樣）。儀表不用時(shí)也請(qǐng)將功能開關(guān)（</span><span style="font-family:Times New Roman">3</span><span style="font-family:幼圓">）置于“校零"檔位。</span></span></strong><strong></strong></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.3.4 PC36E</span><span style="font-family:幼圓">附帶的一對(duì)溫度傳感器是經(jīng)過精密測(cè)量、校正、與配對(duì)的，使用時(shí)應(yīng)</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px">小心輕放，安裝移動(dòng)時(shí)應(yīng)拿握傳感器的金屬部分，不得拖拽其引線。傳感器尼龍帶</span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">的中心位置安裝了高靈敏度微型鉑電阻表面溫度傳感器（</span><span style="font-family:Times New Roman">2mm</span></span><span style="font-family: 'Times New Roman';font-size: 19px">×</span><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">2mm</span><span style="font-family:幼圓">的白色部分），尤其應(yīng)注意保護(hù)，防止碰撞、硬物刮擦，也不要用手觸摸，避免臟污。 </span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:Times New Roman">12</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.3.5 </span><span style="font-family:幼圓">測(cè)量由多股導(dǎo)體組成的線纜的導(dǎo)體電阻，測(cè)量夾具的優(yōu)劣，對(duì)測(cè)量結(jié)果的準(zhǔn)確度、穩(wěn)定性、數(shù)據(jù)的重復(fù)性影響極大，尤其是大截面的多股鋁絞線，由于氧化膜的接觸電阻很大，導(dǎo)體電流分布不均勻，給測(cè)量結(jié)果帶來(lái)極大的不確定性。推薦使用新型的液壓夾具，可以對(duì)導(dǎo)體施加數(shù)以噸計(jì)的壓力，破壞多股線表面的氧化層，充分發(fā)揮本儀器的優(yōu)良性能。</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.3.6 </span><span style="font-family:幼圓">儀器使用時(shí)，其通風(fēng)孔不得遮蓋，以保證散熱良好。測(cè)試場(chǎng)合必須避開干擾源，如手電鉆、電焊機(jī)、大功率接觸器等。</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">5.3.7</span><span style="font-family:幼圓">儀器不用時(shí)，應(yīng)存放在通風(fēng)、干燥的環(huán)境下，避免嚴(yán)寒與高溫。</span></span></p><p style="margin-left:43px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">6 </span><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">執(zhí)行標(biāo)準(zhǔn)及制造保證</span> </span></strong></p><p style="margin-left:43px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">6.1 </span><span style="font-family: 幼圓;font-size: 19px">本儀表執(zhí)行標(biāo)準(zhǔn)為上海市企業(yè)標(biāo)準(zhǔn)</span><span style="font-family: 'Times New Roman';font-size: 19px">Q/AEXJ3</span><span style="font-family: 幼圓;font-size: 19px">。</span></p><p style="margin-left:0;text-indent:0;line-height:25px"><span style="font-family: 幼圓;font-size: 19px">6.2 </span><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">制造保證：用戶在按本使用說(shuō)明書規(guī)定的使用條件使用或操作本儀表</span><span style="font-family:Times New Roman">, </span><span style="font-family:幼圓">自購(gòu)貨日起</span><span style="font-family:Times New Roman">12</span><span style="font-family:幼圓">個(gè)月內(nèi)，屬因制造不良而損壞或不能正常運(yùn)行，本公司負(fù)責(zé)為用戶免費(fèi)修理或調(diào)換。本儀表實(shí)行終身維修。</span></span></p><p style="line-height:25px"><strong><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:Times New Roman">7 </span><span style="font-family:幼圓">儀器的成套性</span></span></strong><strong></strong></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">隨同每臺(tái)儀器提供下列技術(shù)文件與附件：</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">產(chǎn)品合格證書</span> <span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">份使用說(shuō)明書 </span><span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">份</span></span></p><p style="line-height:25px"><span style="font-family: 幼圓;font-size: 19px"> <span style="font-family:幼圓">電源線</span> <span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">根測(cè)量導(dǎo)線 </span><span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">付</span></span></p><p style="text-indent:19px;line-height:25px"><span style="font-family: 幼圓;font-size: 19px"><span style="font-family:幼圓">溫度傳感器</span> <span style="font-family:Times New Roman">1</span><span style="font-family:幼圓">付（僅</span><span style="font-family:Times New Roman">PC36E</span><span style="font-family:幼圓">）</span></span></p><p><br/></p> <div id="iqaqewgi6e" class="clear"></div> </div> <div id="iqaqewgi6e" class="article"> <p>上一篇：<a href="/Article-3913350.html">全自動(dòng)互感器伏安特性測(cè)試儀技術(shù)講解</a></p> <p>下一篇：<a href="/Article-3906934.html">ZX1G交直流電阻箱技術(shù)參數(shù)</a></p> </div> <div id="iqaqewgi6e" class="clear"></div> </div> </div> <div id="iqaqewgi6e" class="n-9"> <div id="iqaqewgi6e" class="c-right"> <div id="iqaqewgi6e" class="c-1 r-pro"> 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