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src="http://www.chem17.com/mystat.aspx?u=mbdzkj"></script>  <div id="iqaqewgi6e" class="ncontent w_1100"> <div id="iqaqewgi6e" class="h-6">技術(shù)文章<span>您當前的位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > QJ42直流雙臂電橋儀詳細說明</span></div>  <div id="iqaqewgi6e" class="n-3 c-news"> <div id="iqaqewgi6e" class="newsnr"> <h1>QJ42直流雙臂電橋儀詳細說明</h1> <p class="source"><span>日期：2019-06-19</span><span>瀏覽：2700次</span></p> <div> <p style="padding: 0px; margin: 0px; font-size: 12px; font-family: 宋體, Helvetica, Arial, sans-serif; color: rgb(0, 0, 0);">QJ42直流雙臂電橋儀器為湯姆遜（凱爾文）線路的直流雙臂電橋，專門測量11Ω以下阻值的攜帶式木殼結(jié)構(gòu)的電橋，內(nèi)附磁電式指零儀及2節(jié)1號干電池、1節(jié)9V疊層電池（用戶自配）。<br />QJ42直流雙臂電橋能測金屬的導(dǎo)電率、電機、變壓器繞組阻值及電刷、開關(guān)的接觸電阻。<br />符合“測量用直流電阻電橋"的下述三個標準：<br />電工委員會IEC564-77（標準）<br />中華人民共和國GB3930-83（國家標準）<br />中華人民共和國ZBY164-83（國家專業(yè)標準）<br />技術(shù)性能<br />1、保證準確度溫度：5~35℃；<br />2、使用溫度范圍：0~ 45℃；<br />3、測量范圍、分辨率、準確度（允許誤差）：</p><p style="padding: 0px; margin: 0px; font-size: 12px; font-family: 宋體, Helvetica, Arial, sans-serif; color: rgb(0, 0, 0);"> <img alt="" src="http://img66.afzhan.com/9/20150916/635780118062113825504.png" style="border:0px; height:122px; margin:0px; padding:0px; width:486px" /></p><p style="padding: 0px; margin: 0px; font-size: 12px; font-family: 宋體, Helvetica, Arial, sans-serif; color: rgb(0, 0, 0);">4、電源：<br />內(nèi)接電源：2節(jié)1號干電池、1節(jié)9V疊層電池。由于工作電流較大，應(yīng)采用容量較大的1號干電池，例如堿性鋅錳干電池等。<br />外接電源：1.5~2V大容量直流電源。<br />上表格中zui大工作電流為電源內(nèi)阻0.2Ω時計算數(shù)據(jù)，供參考。<br />5、指零儀電流常數(shù)：2×10-6A/格；<br />指零儀內(nèi)阻：13Ω左右；<br />6、外形尺寸：257×220×150mm；<br />7、重量：≤2.5Kg。</p> <div id="iqaqewgi6e" class="clear"></div> </div> <div id="iqaqewgi6e" class="article"> <p>上一篇：<a href="/Article-1870329.html">QJ23a型直流電阻電橋講解</a></p> <p>下一篇：<a href="/Article-1865222.html">三相微機繼電保護測試儀試驗步驟</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"> <div 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