電纜導(dǎo)體電阻測量儀使用方法注意事項(xiàng)-上?？档请姎饪萍加邢薰?/title> <link type="text/css" rel="stylesheet" href="/Skins/106676/css/index.css" /> <script src="/skins/106676/js/jquery-3.6.0.min.js"></script> <link rel="stylesheet" type="text/css" href="/skins/106676/css/swiper.min.css"> <script type="text/javascript" src="/skins/106676/js/swiper.min.js"></script>  <script language="javascript" type="text/javascript"> var nav= '5'; var menu= '0'; </script>  <link rel="shortcut icon" href="/skins/106676/favicon.ico"> <script type="application/ld+json"> { "@context": "https://ziyuan.baidu.com/contexts/cambrian.jsonld", "@id": "http:///Article-3899208.html", "title": "電纜導(dǎo)體電阻測量儀使用方法注意事項(xiàng)", "pubDate": "2024-12-20T10:05:32", "upDate": "2024-12-20T10:05:32" }</script> <script language="javaScript" src="/js/JSChat.js"></script><script language="javaScript">function ChatBoxClickGXH() { DoChatBoxClickGXH('https://chat.chem17.com',83189) }</script><script>!window.jQuery && document.write('<script 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<script src="http://www.chem17.com/mystat.aspx?u=mbdzkj"></script>  <div id="ubjn47ipz" class="ncontent w_1100"> <div id="ubjn47ipz" class="h-6">技術(shù)文章<span>您當(dāng)前的位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 電纜導(dǎo)體電阻測量儀使用方法注意事項(xiàng)</span></div>  <div id="ubjn47ipz" class="n-3 c-news"> <div id="ubjn47ipz" class="newsnr"> <h1>電纜導(dǎo)體電阻測量儀使用方法注意事項(xiàng)</h1> <p class="source"><span>日期：2024-12-20</span><span>瀏覽：210次</span></p> <div> <p style="line-height:31px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體, SimSun;">電纜導(dǎo)體電阻測量儀使用方法注意事項(xiàng) </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";">3 </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";">4.1</span><span style="font-size: 19px; font-family: 幼圓;">面板功能介紹</span></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"> </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%; width: 596px; height: 275px;" src="https://img41.chem17.com/9/20241220/638702856384393364819.jpg" title="b452c43db9b7006e2ffd9c35c25a59a.jpg" alt="b452c43db9b7006e2ffd9c35c25a59a.jpg" width="596" height="275"/></p><p style="text-align:center"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span><br/></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;">其中</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">1</span>）─液晶顯示屏</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">2</span>）─量程選擇開關(guān)</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">3</span>）─校零、平衡旋鈕 </span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">4</span>）─外接電源插口（僅<span style="font-size: 16px; font-family: "Times New Roman";">PC57</span>）</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">5</span>）─電源開關(guān)</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">6</span>）─電池低電壓告警指示燈（僅<span style="font-size: 16px; font-family: "Times New Roman";">PC57</span>）</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">7</span>）─讀數(shù)保持開關(guān)</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">8</span>）─測量電流正、反向選擇開關(guān)</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">9</span>）─校零、平衡、測量選擇開關(guān)</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">10</span>）─電流輸出<span style="font-size: 16px; font-family: "Times New Roman";">C1</span>端（接測量導(dǎo)線：紅色粗線）</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">（<span style="font-size: 16px; font-family: "Times New Roman";">11</span>）─電壓輸入<span style="font-size: 16px; font-family: "Times New Roman";">P1</span>端（接測量導(dǎo)線：紅色細(xì)線）</span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;">（</span><span style="font-family: "Times New Roman"; font-size: 19px;">1</span><span style="font-family: 幼圓; font-size: 19px;"><span style="font-size: 16px; font-family: "Times New Roman";">2</span><span style="font-size: 16px; font-family: 幼圓;">）─電壓輸入</span><span style="font-size: 16px; font-family: "Times New Roman";">P2</span><span style="font-size: 16px; font-family: 幼圓;">端（接測量導(dǎo)線：黑色細(xì)線）</span></span></span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 幼圓; font-size: 19px;">（</span><span style="font-family: "Times New Roman"; font-size: 19px;">1</span><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;">）</span>─<span style="font-size: 16px; font-family: 幼圓;">電流輸出</span><span style="font-size: 16px; font-family: "Times New Roman";">C2</span><span style="font-size: 16px; font-family: 幼圓;">端（接測量導(dǎo)線：黑色粗線）</span></span></span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">4.2 </span><span style="font-size: 19px; font-family: 幼圓;">電阻測量步驟</span></span></p><p style="line-height:29px"><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";">4.2.1 </span><span style="font-size: 16px; font-family: 幼圓;">電源選擇</span>（僅<span style="font-size: 16px; font-family: "Times New Roman";">PC57</span><span style="font-size: 16px; font-family: 幼圓;">）</span> <span style="font-size: 16px; font-family: 幼圓;">直流電源：打開電池盒蓋板（儀器后面板），按電池盒蓋板指示的極性裝入電壓為</span><span style="font-size: 16px; font-family: "Times New Roman";">1.2</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-size: 16px; font-family: "Times New Roman";">1.5V, R20</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: 幼圓;">號）電池</span><span style="font-size: 16px; font-family: "Times New Roman";">8</span><span style="font-size: 16px; font-family: 幼圓;">節(jié)，推薦優(yōu)先使用電池品種順序依次為：可充電鎳氫電池，高性能堿性電池，鐵殼普通電池。如使用紙殼電池，則應(yīng)充分注意電池狀況，以免電池漏夜腐蝕儀器。交流電源：將儀器所附的專用外接電源的低壓輸出插頭插入儀器的</span>外接電源插口（<span style="font-size: 16px; font-family: "Times New Roman";">4</span>），然后將高壓端插入<span style="font-size: 16px; font-family: "Times New Roman";">220V</span><span style="font-size: 16px; font-family: 幼圓;">電源。外接電源低壓輸出插頭的前端（球面）為正極，后端為負(fù)極。 </span></span></span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="line-height:31px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">4.2.2</span>儀器預(yù)熱及內(nèi)部校零：將校零、平衡、測量選擇開關(guān)<span style="font-size: 16px; font-family: "Times New Roman";">(9)</span>撥至“校零"位置， </span></p><p style="line-height:31px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">打開電源開關(guān)（</span><span style="font-size: 19px; font-family: "Times New Roman";">5</span><span style="font-size: 19px; font-family: 幼圓;">），通電預(yù)熱</span><span style="font-size: 19px; font-family: "Times New Roman";">3</span><span style="font-size: 19px; font-family: 幼圓;">分鐘后，調(diào)節(jié)校零、平衡旋鈕（</span><span style="font-size: 19px; font-family: "Times New Roman";">3</span><span style="font-size: 19px; font-family: 幼圓;">），使儀器示值</span></span></p><p style="line-height:31px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">為</span><span style="font-size: 19px; font-family: "Times New Roman";">0000</span><span style="font-size: 19px; font-family: 幼圓;">。</span></span></p><p style="line-height:31px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">4.2</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: "Times New Roman";">3</span><span style="font-size: 16px; font-family: 幼圓;">按</span><span style="font-size: 16px; font-family: "Times New Roman";">C1</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">P1</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">P2</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">C2</span><span style="font-size: 16px; font-family: 幼圓;">的順序連接被測器件，電流端在外側(cè)、電壓端在內(nèi)側(cè)，</span></span></span></p><p style="line-height:31px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">紅色粗線為</span><span style="font-size: 19px; font-family: "Times New Roman";">C1</span><span style="font-size: 19px; font-family: 幼圓;">、細(xì)線為</span><span style="font-size: 19px; font-family: "Times New Roman";">P1</span><span style="font-size: 19px; font-family: 幼圓;">；黑色粗線為</span><span style="font-size: 19px; font-family: "Times New Roman";">C2</span><span style="font-size: 19px; font-family: 幼圓;">、細(xì)線為</span><span style="font-size: 19px; font-family: "Times New Roman";">P2</span><span style="font-size: 19px; font-family: 幼圓;">。由于本儀器測量靈敏度，在連接</span><span style="font-size: 19px; font-family: "Times New Roman";">P1</span><span style="font-size: 19px; font-family: 幼圓;">、</span><span style="font-size: 19px; font-family: "Times New Roman";">P2</span><span style="font-size: 19px; 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)生的熱電勢將會對電阻的測量造成影響。</span></span></p><p style="text-indent:38px;line-height:31px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: "Times New Roman"; font-size: 19px;">1m</span><span style="font-family: 幼圓; font-size: 19px;">長度的導(dǎo)體電阻測量必須與專用的導(dǎo)體電阻測量夾具配合使用，Φ<span style="font-size: 16px; font-family: "Times New Roman";">8</span>mm以下電線可選用<span style="font-size: 16px; font-family: "Times New Roman";">DQ-150</span><span style="font-size: 16px; font-family: 幼圓;">型導(dǎo)體電阻測量夾具，</span>Φ<span style="font-size: 16px; font-family: "Times New Roman";">20</span>mm以下電纜可選用<span style="font-size: 16px; font-family: "Times New Roman";">DQ-240</span><span style="font-size: 16px; font-family: 幼圓;">型，</span>Φ<span style="font-size: 16px; font-family: "Times New Roman";">1</span>mm以上至Φ<span style="font-size: 16px; font-family: "Times New Roman";">38</span>mm電纜可選用<span style="font-size: 16px; font-family: "Times New Roman";">DQ-630</span><span style="font-size: 16px; font-family: 幼圓;">型</span>，鉗口端接<span style="font-size: 16px; font-family: "Times New Roman";">C1</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">C2</span><span style="font-size: 16px; font-family: 幼圓;">，刀口端接</span><span style="font-size: 16px; font-family: "Times New Roman";">P1</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">P2</span><span style="font-size: 16px; font-family: 幼圓;">。</span></span></span></p><p style="text-indent:38px;line-height:31px"><span style="font-family: 幼圓; font-size: 16px;">成盤電纜直流電阻測量必須與專用的導(dǎo)體直流電阻測試鉗配合使用，Φ<span style="font-size: 16px; font-family: "Times New Roman";">32</span>mm以下電纜可選用本廠特制的中型導(dǎo)體電阻測試鉗，Φ<span style="font-size: 16px; font-family: "Times New Roman";">41</span>mm以下電纜可選用本廠特制的大型導(dǎo)體電阻測試鉗，對于通常的測試要求，使用一對（紅、黑）測試鉗即可，紅鉗與黑鉗分別夾在被測電纜兩端，紅鉗的兩根紅線分別接<span style="font-size: 16px; font-family: "Times New Roman";">C1</span>、<span style="font-size: 16px; font-family: "Times New Roman";">P1</span>，黑鉗的兩根黑線分別接<span style="font-size: 16px; font-family: "Times New Roman";">C2</span>、<span style="font-size: 16px; font-family: "Times New Roman";">P2</span>。如果對測量準(zhǔn)確度要求很高或被測電纜直徑很大時(shí)（譬如大型電纜成品交割時(shí)，雙方對直流電阻指標(biāo)是否合格有爭議而進(jìn)行的仲裁試驗(yàn)），可采用兩對導(dǎo)體電阻測試鉗，以消除電流端與電壓端距離過近造成測量結(jié)果可能偏大的影響。兩個(gè)紅鉗夾在被測電纜的一端，兩個(gè)鉗子之間的距離應(yīng)不小于被測導(dǎo)體周長的<span style="font-size: 16px; font-family: "Times New Roman";">1.5</span>倍，外側(cè)紅鉗的兩根紅線并聯(lián)接<span style="font-size: 16px; font-family: "Times New Roman";">C1</span>端，內(nèi)側(cè)紅鉗的兩根紅線并聯(lián)接<span style="font-size: 16px; font-family: "Times New Roman";">P1</span>端；兩個(gè)黑鉗夾在被測電纜的另一端，外側(cè)黑鉗的兩根黑線并聯(lián)接<span style="font-size: 16px; font-family: "Times New Roman";">C2</span>端，內(nèi)側(cè)黑鉗的兩根黑線并聯(lián)接<span style="font-size: 16px; font-family: "Times New Roman";">P2</span>端。</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">4.2.4 </span>根據(jù)被測器件的性質(zhì)及電阻值范圍，選擇合適的測量檔位，儀表在同一量程設(shè)有不同測量電流可供選擇，較大的測量電流具有抗干擾性能好的特點(diǎn)，此時(shí)顯示屏上出現(xiàn)“<span style="font-size: 16px; font-family: "Times New Roman";">THI</span>"字符；較低的測量電流對導(dǎo)體的加熱效應(yīng)小，適用于微細(xì)導(dǎo)線的測量，此時(shí)顯示屏上出現(xiàn)“<span style="font-size: 16px; font-family: "Times New Roman";">TLO</span>"字符。如果不能估計(jì)被測器件的電阻值范圍，則應(yīng)先選取較高的電阻量程及較小的測量電流，防止被測器件受到大電流沖擊。</span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">4.2.5 </span>測量回路電勢平衡：將開關(guān)（<span style="font-size: 16px; font-family: "Times New Roman";">9</span>）由“校零"位撥至“平衡"位置（中間位）時(shí)，顯示屏上可能會出現(xiàn)數(shù)值，表示測量回路中存在不平衡的接觸電勢或熱電勢，再次調(diào)節(jié)調(diào)節(jié)校零、平衡旋鈕（<span style="font-size: 16px; font-family: "Times New Roman";">3</span>），使儀器示值在<span style="font-size: 16px; font-family: "Times New Roman";">0000</span>與<span style="font-size: 16px; font-family: "Times New Roman";">-0000</span>之間，可以抵消外部電勢對電阻測量的影響。應(yīng)該注意：測量回路中的不平衡電勢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，測量者應(yīng)靜待片刻，等到顯示屏上的讀數(shù)降至<span style="font-size: 16px; font-family: "Times New Roman";">5</span></span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">個(gè)字以下，再進(jìn)行調(diào)節(jié)平衡的操作，如果儀表在“平衡"位置上讀數(shù)不穩(wěn)或不能調(diào)至零位，請重點(diǎn)檢查</span><span style="font-size: 19px; font-family: "Times New Roman";">P1</span><span style="font-size: 19px; font-family: 幼圓;">、</span><span style="font-size: 19px; font-family: "Times New Roman";">P2</span><span style="font-size: 19px; font-family: 幼圓;">電位端是否接妥。</span></span></p><p style="line-height:29px"><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";">4.2.6 </span><span style="font-size: 16px; font-family: 幼圓;">電阻值測量：將開關(guān)（</span><span style="font-size: 16px; font-family: "Times New Roman";">9</span><span style="font-size: 16px; font-family: 幼圓;">）由“平衡"撥至“測量"位置，測量電流通過被測器件，顯示屏上出現(xiàn)的數(shù)值即為被測電阻值。如果顯示屏出現(xiàn)“</span><span style="font-size: 16px; 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-size: 16px; font-family: 幼圓;">"說明測量欠量程，應(yīng)將量程開關(guān)（</span><span style="font-size: 16px; font-family: "Times New Roman";">2</span><span style="font-size: 16px; font-family: 幼圓;">）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-size: 16px; font-family: "Times New Roman";">1800</span><span style="font-size: 16px; font-family: 幼圓;">個(gè)字，說明測量過量程，應(yīng)逆時(shí)針旋轉(zhuǎn)量程開關(guān)，以保證測量具有較高的分辨力。如量程合適，儀器示值應(yīng)在</span><span style="font-size: 16px; font-family: "Times New Roman";">1800</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: "Times New Roman";">19999</span><span style="font-size: 16px; font-family: 幼圓;">之間。</span></span></span></p><p style="line-height:29px"><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";">4.3 </span><span style="font-size: 16px; font-family: 幼圓;">讀數(shù)保持：將讀數(shù)保持開關(guān)（</span><span style="font-size: 16px; font-family: "Times New Roman";">7</span><span style="font-size: 16px; font-family: 幼圓;">）撥至“保持"位置，顯示屏上出現(xiàn)“</span><span style="font-size: 16px; font-family: "Times New Roman";">H</span><span style="font-size: 16px; font-family: 幼圓;">"</span></span><span style="font-family: "Times New Roman"; font-size: 19px;"> </span><span style="font-size: 19px; 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)測量，讀數(shù)保持開關(guān)應(yīng)置于“測量"位置。</span></span></p><p style="line-height:29px"><span style="font-family: 幼圓; font-size: 16px;"><span style="font-size: 16px; font-family: "Times New Roman";">4.4</span>反向電流下的電阻測量：電線電纜導(dǎo)體直流電阻測量，如被測電阻小于<span style="font-size: 16px; font-family: "Times New Roman";">0.1</span>Ω，按國家標(biāo)準(zhǔn)的規(guī)定應(yīng)進(jìn)行反向電流下的電阻測量，以進(jìn)一步抵消測量回路熱電勢</span></p><p style="line-height:29px"><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;">影響。將測量電流正、反向選擇開關(guān)（</span><span style="font-size: 16px; font-family: "Times New Roman";">8</span><span style="font-size: 16px; font-family: 幼圓;">）撥至“反向</span></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）位置，顯示</span></span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;">屏上電阻值的前面將出現(xiàn)負(fù)號，表示該數(shù)值是在反向電流下測得的數(shù)據(jù)，將這個(gè)</span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: 幼圓;">數(shù)據(jù)的絕對值與“正向</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;">（正向電流）下測得的數(shù)據(jù)相加后除以</span><span style="font-size: 16px; font-family: "Times New Roman";">2</span><span style="font-size: 16px; font-family: 幼圓;">，作為最終的測量結(jié)果，與單向電流下的測量的結(jié)果相比，該數(shù)值具有更高的準(zhǔn)確度與可靠性。</span></span></span></p><p style="line-height:29px"><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";">5 </span><span style="font-size: 16px; font-family: 幼圓;">注意事項(xiàng)</span></span></strong><strong></strong></span></p><p style="margin-right:12px;line-height:29px"><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";">5.1 </span><span style="font-size: 16px; 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)，具有一些電橋及其他數(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)閱讀本使用說明書</span></strong><span style="font-family: 幼圓; font-size: 19px;">。</span></span></p><p style="margin-right:12px;margin-left:0;text-indent:0;line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">5.2 在進(jìn)行電線電纜導(dǎo)體直流電阻測量時(shí)<span style="font-size: 16px; font-family: "Times New Roman";">, </span>必須盡可能保證環(huán)境溫度在<span style="font-size: 16px; font-family: "Times New Roman";">15-25</span>℃范</span></p><p style="margin-right:12px;line-height:29px"><span style="font-family: 幼圓; font-size: 16px;">圍內(nèi)，儀表保證表<span style="font-size: 16px; font-family: "Times New Roman";">3</span>所示的測量準(zhǔn)確度，在<span style="font-size: 16px; font-family: "Times New Roman";">5-35</span>℃環(huán)境溫度下，儀表可以正常工作，但測量準(zhǔn)確度降低一個(gè)等級。由于被測銅、鋁導(dǎo)線具有很高的溫度系數(shù)，在測量時(shí)應(yīng)嚴(yán)格保持室內(nèi)溫度的均勻與恒定，避免陽光直照或空調(diào)風(fēng)直吹，室溫調(diào)節(jié)推薦采用中央空調(diào)或變頻式空調(diào)，最大限度減少室內(nèi)溫度的波動。測溫器件應(yīng)采用分辨力不低于<span style="font-size: 16px; font-family: "Times New Roman";">0.1</span>℃的精密溫度計(jì)，并安裝在盡可能靠近被測導(dǎo)體的位置上。</span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">5.3 </span><strong><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";">C1</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">C2</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">P1</span><span style="font-size: 16px; font-family: 幼圓;">、</span><span style="font-size: 16px; font-family: "Times New Roman";">P2</span><span style="font-size: 16px; font-family: 幼圓;">端懸空時(shí)，開關(guān)（</span><span style="font-size: 16px; font-family: "Times New Roman";">9</span><span style="font-size: 16px; font-family: 幼圓;">）必須置于“校零"檔位，測量結(jié)束時(shí)應(yīng)先將開關(guān)</span><span style="font-size: 16px; font-family: "Times New Roman";">(6)</span><span style="font-size: 16px; font-family: 幼圓;">撥至“校零"位置，斷開測量電流，然后斷開被測器件，應(yīng)避免在大電流測量狀態(tài)下將負(fù)載開路，儀表不用時(shí)也請將開關(guān)</span><span style="font-size: 16px; font-family: "Times New Roman";">(9)</span><span style="font-size: 16px; font-family: 幼圓;">撥至“校零"位置。</span></span></strong></span></p><p style="line-height:29px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">5.4 </span><span style="font-size: 19px; font-family: 幼圓;">在使用電池供電時(shí)</span><span style="font-size: 19px; font-family: "Times New Roman";">, </span><span style="font-size: 19px; font-family: 幼圓;">如出現(xiàn)顯示屏背光突然熄滅的情況（較易出現(xiàn)在測量電流為</span><span style="font-size: 19px; font-family: "Times New Roman";">1A</span><span style="font-size: 19px; font-family: 幼圓;">的情況下），說明電池電壓過低，必須更換電池或改用外接電源供電。</span></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 19px; font-family: "Times New Roman";">5.5 </span><span 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href="/ParentList-1359477.html" onmouseover="showsubmenu('絕緣梯')" class="yj">絕緣梯</a> <div class="ubjn47ipz" id="submenu_絕緣梯" style="display:none"> <ul> <li><a href="/SonList-1359484.html">> 半絕緣二節(jié)拉伸梯</a></li> <li><a href="/SonList-1359483.html">> 絕緣凳</a></li> <li><a href="/SonList-1359482.html">> 絕緣A型梯</a></li> <li><a href="/SonList-1359481.html">> 絕緣二節(jié)拉伸梯</a></li> <li><a href="/SonList-1359480.html">> 絕緣單梯</a></li> <li><a href="/SonList-1359478.html">> 多功能絕緣關(guān)節(jié)梯</a></li> </ul> </div> </li> <li><a href="/ParentList-1326774.html" onmouseover="showsubmenu('防爆電加熱器')" class="yj">防爆電加熱器</a> <div class="ubjn47ipz" id="submenu_防爆電加熱器" style="display:none"> <ul> <li><a href="/SonList-1326775.html">> 防爆管狀加熱器</a></li> </ul> </div> </li> <li><a href="/ParentList-1326772.html" onmouseover="showsubmenu('電加熱器')" class="yj">電加熱器</a> <div class="ubjn47ipz" id="submenu_電加熱器" style="display:none"> <ul> <li><a href="/SonList-1326773.html">> 管狀加熱器</a></li> </ul> </div> </li> <li><a href="/ParentList-1324449.html" onmouseover="showsubmenu('液壓鉗、繞纜剪總匯')" class="yj">液壓鉗、繞纜剪總匯</a> <div class="ubjn47ipz" id="submenu_液壓鉗、繞纜剪總匯" style="display:none"> <ul> <li><a href="/SonList-1324457.html">> 液壓鉗（進(jìn)口）</a></li> <li><a href="/SonList-1324456.html">> 充電式液壓線纜剪</a></li> <li><a href="/SonList-1324455.html">> 充電式液壓電纜鉗</a></li> <li><a href="/SonList-1324454.html">> 剝線鉗</a></li> <li><a href="/SonList-1324453.html">> 線纜剪</a></li> <li><a href="/SonList-1324452.html">> 液壓導(dǎo)線鉗</a></li> <li><a href="/SonList-1324451.html">> 壓接鉗</a></li> <li><a href="/SonList-1324450.html">> 液壓鉗</a></li> </ul> </div> </li> <li><a href="/ParentList-1324332.html" onmouseover="showsubmenu('繞組匝間沖擊耐電壓試驗(yàn)儀')" class="yj">繞組匝間沖擊耐電壓試驗(yàn)儀</a> <div class="ubjn47ipz" id="submenu_繞組匝間沖擊耐電壓試驗(yàn)儀" style="display:none"> <ul> <li><a href="/SonList-1324343.html">> 耐電壓試驗(yàn)儀</a></li> </ul> </div> </li> <li><a href="/ParentList-1324322.html" onmouseover="showsubmenu('直流高壓發(fā)生器')" class="yj">直流高壓發(fā)生器</a> <div class="ubjn47ipz" id="submenu_直流高壓發(fā)生器" style="display:none"> <ul> <li><a href="/SonList-1324326.html">> 直流高壓發(fā)生器</a></li> <li><a href="/SonList-1324324.html">> ZGF直流高壓發(fā)生器</a></li> </ul> </div> </li> <li><a href="/ParentList-1324311.html" onmouseover="showsubmenu('電工電修工具設(shè)備總匯')" class="yj">電工電修工具設(shè)備總匯</a> <div class="ubjn47ipz" id="submenu_電工電修工具設(shè)備總匯" style="display:none"> <ul> <li><a href="/SonList-1324320.html">> 電動切紙機(jī)</a></li> <li><a href="/SonList-1324319.html">> 電工絕緣材料</a></li> <li><a href="/SonList-1324318.html">> 電機(jī)槽楔</a></li> <li><a href="/SonList-1324316.html">> 橡膠錘、電工鑿</a></li> <li><a href="/SonList-1324314.html">> 不銹鋼通條、通刷</a></li> <li><a href="/SonList-1324313.html">> 不銹鋼劃線板</a></li> <li><a href="/SonList-1324312.html">> 不銹鋼壓線板</a></li> </ul> </div> </li> <li><a href="/ParentList-1324298.html" onmouseover="showsubmenu('漆包線電動刮漆器總匯')" class="yj">漆包線電動刮漆器總匯</a> <div class="ubjn47ipz" id="submenu_漆包線電動刮漆器總匯" style="display:none"> <ul> <li><a href="/SonList-1324300.html">> 漆包線電動刮漆器</a></li> </ul> </div> </li> <li><a href="/ParentList-1324280.html" onmouseover="showsubmenu('電機(jī)萬用繞線?？倕R')" class="yj">電機(jī)萬用繞線?？倕R</a> <div class="ubjn47ipz" id="submenu_電機(jī)萬用繞線模總匯" style="display:none"> <ul> <li><a href="/SonList-1324281.html">> 電機(jī)萬用繞線模</a></li> </ul> </div> </li> <li><a href="/ParentList-1324244.html" onmouseover="showsubmenu('拆線機(jī)、烘箱總匯')" class="yj">拆線機(jī)、烘箱總匯</a> <div class="ubjn47ipz" id="submenu_拆線機(jī)、烘箱總匯" style="display:none"> <ul> <li><a href="/SonList-1324253.html">> 電機(jī)鼠籠烘烤器</a></li> <li><a href="/SonList-1324252.html">> 電熱恒溫鼓風(fēng)干燥箱</a></li> <li><a href="/SonList-1324250.html">> 電機(jī)浸漆烘干機(jī)</a></li> <li><a href="/SonList-1324249.html">> 電機(jī)割線機(jī)</a></li> <li><a href="/SonList-1324248.html">> 電動臥式拆切線機(jī)</a></li> <li><a href="/SonList-1324247.html">> 電機(jī)通用拆線機(jī)</a></li> <li><a href="/SonList-1324245.html">> 電機(jī)電動拆線機(jī)</a></li> </ul> </div> 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<li><a href="/SonList-1323231.html">> 大功率液壓扭矩扳手</a></li> <li><a href="/SonList-1323230.html">> 驅(qū)動式液壓扭矩扳手</a></li> </ul> </div> </li> <li><a href="/ParentList-1323194.html" onmouseover="showsubmenu('液壓油泵·泵站總匯')" class="yj">液壓油泵·泵站總匯</a> <div class="ubjn47ipz" id="submenu_液壓油泵·泵站總匯" style="display:none"> <ul> <li><a href="/SonList-1323196.html">> 液壓電動油泵</a></li> </ul> </div> </li> <li><a href="/ParentList-1323160.html" onmouseover="showsubmenu('液壓千斤頂總匯')" class="yj">液壓千斤頂總匯</a> <div class="ubjn47ipz" id="submenu_液壓千斤頂總匯" style="display:none"> <ul> <li><a href="/SonList-1323171.html">> 液壓爪式起頂機(jī)</a></li> <li><a href="/SonList-1323170.html">> 雙節(jié)液壓千斤頂</a></li> <li><a href="/SonList-1323169.html">> 臥式液壓千斤頂</a></li> <li><a href="/SonList-1323168.html">> 螺旋式千斤頂</a></li> <li><a href="/SonList-1323167.html">> 立式油壓千斤頂</a></li> <li><a href="/SonList-1323166.html">> 立臥兩用千斤頂</a></li> <li><a href="/SonList-1323165.html">> 自鎖式液壓千斤頂</a></li> <li><a href="/SonList-1323164.html">> 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