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href="/article.html">技術(shù)文章</a> > QJ44直流雙臂電橋主要技術(shù)指標(biāo)</span></div>  <div id="iy7ludgahikt" class="n-3 c-news"> <div id="iy7ludgahikt" class="newsnr"> <h1>QJ44直流雙臂電橋主要技術(shù)指標(biāo)</h1> <p class="source"><span>日期：2022-05-06</span><span>瀏覽：1400次</span></p> <div> <p style="font-family: Tahoma, Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 12px; padding: 0px; white-space: normal;"><span style="font-size: 16px;">QJ44型直流雙臂電橋，符合GB/T3930-1983標(biāo)準(zhǔn)，是攜帶型測量0.0001-11Ω電阻的雙臂電橋。全量程由五個量限和步進(jìn)讀數(shù)盤及滑線讀數(shù)盤組成；內(nèi)附晶體檢流計和內(nèi)附工作電源，故不需任何其它附件即可投入測量工作。適合工礦企業(yè)實(shí)驗(yàn)室、車間現(xiàn)場或野外工地，對直流低值電阻作準(zhǔn)確測量。體積小，測量迅速，使用方便，為配合外接高靈敏度指零儀表及大容量電源需要，電橋有外接指零儀插座及外接電源接線端鈕。開關(guān)、接線柱及指零表頭等儀器的部件均安裝在一塊金屬板上，表頭讀數(shù)清晰，并有靈敏度調(diào)節(jié)，抗振強(qiáng)度高，整個儀器裝入帶蓋的金屬箱內(nèi)，攜帶方便。</span></p><p style="font-family: Tahoma, Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 12px; padding: 0px; white-space: normal;"><span style="font-size: 16px;">二．<span style="font-family: Tahoma, Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 16px;">QJ44型直流雙臂電橋</span>主要技術(shù)指標(biāo)<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>QJ44型直流雙臂電橋的主要用途，用來測量（0.0001-11）Ω的直流電阻，金屬導(dǎo)體的電阻率、導(dǎo)線電阻、直流分流器電阻、開關(guān)、電器的接觸電阻及各類型電機(jī)、變壓器的繞線電阻和升溫試驗(yàn)等。</span></p><p style="font-family: Tahoma, Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 12px; padding: 0px; white-space: normal;"><span style="font-size: 16px;">三．電橋主要技術(shù)性能<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>1.總有效量程：（0.001-11）Ω，分五個量程<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>2.電橋的參考溫度為（20±1.5）℃，參考相對濕度為40%-60%。<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>3.電橋的標(biāo)稱使用溫度為（20±1.5）℃，標(biāo)稱使用相對濕度為25%-80%。<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>4.在參考溫度和參考相對濕度的條件下，電橋各量限的允許誤差極限為。<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>Elim=±C%（RN/10+X）•••••••••••••（1）<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>式中：Elim-允許誤差極限，Ω；<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>X-標(biāo)度盤示值，Ω。<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>5.電橋各量限，有效量程，等級指數(shù)和基準(zhǔn)值于表1所示。</span></p><p style="font-family: Tahoma, Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 12px; padding: 0px; white-space: normal;"><span style="font-size: 16px;"> </span></p><p style="text-align: center"><img style="max-width:800px;max-height:300%;" src="https://img70.chem17.com/9/20220506/637874174015863356543.jpg" title="2345_image_file_copy_1.jpg" alt="2345_image_file_copy_1.jpg"/></p><p style="font-family: Tahoma, Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 12px; padding: 0px; white-space: normal;"><span style="font-size: 16px;">表1 <br style="font-size: 9pt; margin: 0px; padding: 0px;"/>量程因素有效量程（Ω）等級指數(shù)（C）基準(zhǔn)值RN（Ω）<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>×100 1-11 0.2 10<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>×10 0.1-1.1 0.2 1<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>×1 0.01-0.11 0.2 0.1<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>×0.1 0.001-0.011 0.5 0.01<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>×0.01 0.0001-0.0011 1 0.001</span></p><p style="font-family: Tahoma, Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 12px; padding: 0px; white-space: normal;"><span style="font-size: 16px;">6.相對濕度在參考條件下，溫度超過參考溫度范圍，但在標(biāo)稱使用范圍之內(nèi)，由于溫度變化引起的附加差不應(yīng)超過相應(yīng)一個等級指數(shù)值。<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>7.溫度在參考條件下，濕度超過參考相對濕度范圍，但在標(biāo)稱使用相對濕度范圍之內(nèi)，由于濕度變化引起的附加誤差不應(yīng)超過相應(yīng)一個等級指數(shù)值的20%。<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>8.電橋的工作電源為1.5V（內(nèi)附電源1.5V一號[R20]電池6節(jié)并聯(lián)），晶體管指放大儀器工作電源為6F22、9V（3節(jié)并聯(lián)）。<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>9.內(nèi)附晶體管指零儀，靈敏度可以調(diào)節(jié)。在測量（0.01-11）Ω范圍內(nèi)，在規(guī)定的電壓下，當(dāng)被測量電阻變化允許在一個極限誤差時，指零儀的偏轉(zhuǎn)大于等于一個分格，就能滿足測量準(zhǔn)確度的要求。靈敏度不要過高，否則不易平衡，測量電阻時間不易過長。<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>10.儀器重量：約4.5kg<br style="font-size: 9pt; margin: 0px; padding: 0px;"/>11.外形尺寸：308mm×260mm×160mm</span></p><p><br/></p> <div id="iy7ludgahikt" class="clear"></div> </div> <div id="iy7ludgahikt" class="article"> <p>上一篇：<a href="/Article-3000257.html">QJ44直流雙臂電橋使用方法</a></p> <p>下一篇：<a href="/Article-2990146.html">GX9型十進(jìn)式電感箱技術(shù)參數(shù)</a></p> </div> <div id="iy7ludgahikt" class="clear"></div> </div> </div> <div id="iy7ludgahikt" class="n-9"> <div id="iy7ludgahikt" class="c-right"> <div id="iy7ludgahikt" class="c-1 r-pro"> <div id="iy7ludgahikt" class="c-left"> <div id="iy7ludgahikt" class="h-2"><a href="/products.html">產(chǎn)品分類</a></div> <ul> <li><a href="/ParentList-1388067.html" onmouseover="showsubmenu('大電流發(fā)生器')" class="yj">大電流發(fā)生器</a> <div 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