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href="/ParentList-1328634.html">電工儀器儀表</a>><a href="/SonList-1329338.html">直流電壓電流校驗(yàn)儀</a> > <span id="pvhr3jx3r5" class="SeoItem" SeoLength="30">QJ55型直流電流比較儀式電橋</span></div> <div id="pvhr3jx3r5" class="inpage_content"> <div class="pvhr3jx3r5" id="nr_main_box"> <div class="pvhr3jx3r5" id="pro_detail_box01"> <div class="pvhr3jx3r5" id="pro_detail_text"> <h1>QJ55型直流電流比較儀式電橋</h1> <div id="pvhr3jx3r5" class="pro_ms"> <div id="pvhr3jx3r5" class="bt">簡要描述：</div> <p>QJ55型直流電流比較儀式電橋是一種寬量程電橋，用于比較、檢定10-4-106Ω以下的標(biāo)準(zhǔn)電阻、直流電阻箱或定標(biāo)十進(jìn)電阻的。外型與原QJ55一樣</p> </div> <p><strong>型號(hào)：</strong></p> <p><strong>瀏覽量：</strong>1008</p> <p><strong>更新時(shí)間：</strong>2024-07-07</p> <p><strong>價(jià)格：</strong><a href="#order"><img src=/images/cankaojia.gif border=0></a></p> <a href="#tagContent1" class="gwc_an2 lightbox" style=" float:left;" rel="group1">在線留言</a> </div> <div class="pvhr3jx3r5" id="preview"> <div id="pvhr3jx3r5" class="jqzoom"><a target="_blank"><img id="bigImg" src="http://img66.chem17.com/gxhpic_3cd5e59743/744e504f2a9629fff8dc9e788414c5fa5dd36827462811c7f3cf2e4cef612e89955a54a6c5aa9cd2_320_320_5.jpg" onload="AutoResizeImage(320,320,this)" jqimg="http://img66.chem17.com/744e504f2a9629fff8dc9e788414c5fa5dd36827462811c7f3cf2e4cef612e89955a54a6c5aa9cd2.jpg" alt="QJ55型直流電流比較儀式電橋"></a></div> </div> </div>  <div class="pvhr3jx3r5" id="ny_pro_box02"> <div class="pvhr3jx3r5" id="con"> <ul id="tags"> <li id="pvhr3jx3r5" class="selectTag"><a onmouseover="selectTag('tagContent0',this)" href="javascript:void(0)" onfocus="this.blur()">詳細(xì)介紹</a></li> </ul> <div class="pvhr3jx3r5" id="tagContent"> <div id="pvhr3jx3r5" class="tagContent selectTag" id="tagContent0" style="display: block;"><link type="text/css" rel="stylesheet" href="/css/property.css"> <script> window.onload=function(){ changeTableHeight(); } window.onresize=function(){ changeTableHeight(); } function changeTableHeight(){ $(".proshowParameter table th").each(function?(i,o){ ????var $this=$(o),? ????height=$this.next().height(); ????$(this).css("height",height); var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); $(".proshowParameter table td").each(function?(i,o){ var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); } </script> <section class="proshowParameter"> <table style=" margin-bottom:20px;"> <tbody> </tbody> </table> </section><p style="margin-left:36pt; text-align:center"><strong><span style="font-size:12pt">QJ55</span></strong><strong><span style="font-family:宋體; font-size:12pt">型直流電流比較儀式電橋是一種寬量程電橋，用于比較、檢定</span></strong><strong><span style="font-size:12pt">10<sup>-4</sup>-10<sup>6</sup></span></strong><strong><span style="font-size:12pt">Ω</span></strong><strong><span style="font-family:宋體; font-size:12pt">以下的</span></strong></p><p style="margin-left:36pt; text-align:center"><strong><span style="font-family:宋體; font-size:12pt">標(biāo)準(zhǔn)</span></strong><strong><span style="font-family:宋體; font-size:12pt">電</span></strong><strong><span style="font-family:宋體; font-size:12pt">阻、直流電阻箱或定標(biāo)十進(jìn)電阻的。外型與原</span></strong><strong><span style="font-size:12pt">QJ55</span></strong><strong><span style="font-family:宋體; font-size:12pt">一樣。</span></strong></p><p style="margin-left:36pt; text-align:center"><strong><span style="font-size:12pt"> 二、 </span></strong><strong><span style="font-family:宋體; font-size:12pt">技術(shù)數(shù)據(jù)</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> 當(dāng)周圍空氣溫度為</span></strong><strong><span style="font-size:12pt">20</span></strong><strong><span style="font-family:宋體; font-size:12pt">±</span></strong><strong><span style="font-size:12pt">2</span></strong><strong><span style="font-family:宋體; font-size:12pt">℃</span></strong><strong><span style="font-family:宋體; font-size:12pt">，相對(duì)濕度</span></strong><strong><span style="font-family:宋體; font-size:12pt">≤</span></strong><strong><span style="font-size:12pt">80%</span></strong><strong><span style="font-family:宋體; font-size:12pt">。電源電壓為</span></strong><strong><span style="font-size:12pt">220V</span></strong><strong><span style="font-family:宋體; font-size:12pt">±5%，</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> 電源頻率為49 </span></strong><strong><span style="font-family:mingliu; font-size:12pt">~ 50</span></strong><strong><span style="font-family:mingliu; font-size:12pt">.5Hz</span></strong><strong><span style="font-family:宋體; font-size:12pt">范圍時(shí)，儀器的誤差應(yīng)符合下述公式計(jì)算所得的值：</span></strong></p><table border="1" cellpadding="0" cellspacing="0" style="border-bottom:medium none; border-collapse:collapse; border-left:medium none; border-right:medium none; border-top:medium none; width:502.6pt"><tbody><tr><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">測(cè) 量范圍</span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">誤差公式</span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">要求</span></strong></p></td></tr><tr><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>-4</sup>Ω</span></strong></p></td><td><p style="margin-left:-5.35pt; text-align:center"><strong><span style="font-family:宋體; font-size:12pt">±2×10<sup>-6</sup></span></strong></p></td><td><p><strong><span style="font-family:宋體; font-size:12pt">直流磁勢(shì)≥10 安匝，電阻上電壓降≥10mV</span></strong></p></td></tr><tr><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>-2</sup>Ω</span></strong><strong><span style="font-family:宋體; font-size:12pt">、10<sup>-3</sup>Ω</span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">±1×10<sup>-6</sup></span></strong></p></td><td rowspan="2"><p><strong><span style="font-family:宋體; font-size:12pt">直流磁勢(shì)≥30 安匝</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt">電阻上電壓降≥30mV、測(cè)量時(shí)配用電流源</span></strong></p></td></tr><tr><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>-1</sup>Ω ~10<sup>-4</sup>Ω</span></strong></p></td><td><p><strong><span style="font-family:宋體; font-size:12pt">|</span></strong><strong><span style="font-family:宋體; font-size:12pt">Δ|≤K(1×10<sup>-6</sup>R+2.5ΔR)</span></strong></p></td></tr><tr><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>4</sup>Ω</span></strong><strong><span style="font-family:宋體; font-size:12pt">、10<sup>5</sup>Ω</span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">±2×10<sup>-6</sup></span></strong></p></td><td rowspan="2"><p><strong><span style="font-family:宋體; font-size:12pt">直流磁勢(shì)≥1 安匝</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt">10<sup>4</sup>Ω</span></strong><strong><span style="font-family:宋體; font-size:12pt">、10<sup>5</sup>Ω測(cè)量時(shí)配用高壓電源</span></strong></p></td></tr><tr><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">1001Ω ~10<sup>5</sup>Ω</span></strong></p></td><td><p><strong><span style="font-family:宋體; font-size:12pt">|</span></strong><strong><span style="font-family:宋體; font-size:12pt">Δ|≤K(2×10<sup>-6</sup>R+2.5ΔR)</span></strong></p></td></tr></tbody></table><p><strong><span style="font-family:宋體; font-size:12pt"> 式中；</span></strong><strong><span style="font-family:宋體; font-size:12pt">|</span></strong><strong><span style="font-family:宋體; font-size:12pt">Δ| </span></strong><strong><span style="font-family:宋體; font-size:12pt">——</span></strong><strong><span style="font-size:12pt"> </span></strong><strong><span style="font-family:宋體; font-size:12pt">儀器的誤差</span></strong></p><p><strong><span style="font-size:12pt"> R </span></strong><strong><span style="font-family:宋體; font-size:12pt">——</span></strong><strong><span style="font-size:12pt"> </span></strong><strong><span style="font-family:宋體; font-size:12pt">測(cè)量盤示</span></strong><strong><span style="font-family:宋體; font-size:12pt">值，為了降低測(cè)量誤差一般均指示在‘10’</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> </span></strong><strong><span style="font-family:宋體; font-size:12pt">ΔR—— 測(cè)量盤zui小步進(jìn)值</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> K </span></strong><strong><span style="font-family:宋體; font-size:12pt">—— 比例系數(shù)</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> 低頻噪聲≤1微安匝。</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> 零位漂移≤20微安匝/30分鐘。</span></strong></p><p><strong><span style="font-family:宋體; font-size:14pt"> 配置“</span></strong><strong><span style="font-size:14pt">110</span></strong><strong><span style="font-family:宋體; font-size:14pt">直流穩(wěn)壓電源”和“</span></strong><strong><span style="font-size:14pt">310</span></strong><strong><span style="font-family:宋體; font-size:14pt">直流穩(wěn)壓電源”，使之滿足高阻和低阻測(cè)量要求穩(wěn)壓電源。</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> 電源：交流220V±5%,頻率50±0.5Hz，如果達(dá)不到此要求應(yīng)使用交流穩(wěn)壓電源，儀器zui大消耗功率為100W。</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> 外型尺寸：730×550×450mm 重量：85kg</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> 測(cè)量標(biāo)準(zhǔn)電阻的準(zhǔn)確度：</span></strong></p><table border="1" cellpadding="0" cellspacing="0" style="border-bottom:medium none; border-collapse:collapse; border-left:medium none; border-right:medium none; border-top:medium none; width:478.05pt"><tbody><tr><td><p style="margin-left:12.05pt"><strong><span style="font-family:宋體; font-size:12pt">測(cè)量范圍（Ω）</span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>-4</sup></span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>-3</sup></span></strong><strong><span style="font-family:宋體; font-size:12pt">～10<sup>-1</sup></span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>0</sup></span></strong><strong><span style="font-family:宋體; font-size:12pt">～10<sup>4</sup></span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>5</sup></span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">10<sup>6</sup></span></strong></p></td></tr><tr><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">準(zhǔn)確度</span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">2</span></strong><strong><span style="font-family:宋體; font-size:12pt">×10<sup>-5</sup></span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">2</span></strong><strong><span style="font-family:宋體; font-size:12pt">×10<sup>-6</sup></span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">1</span></strong><strong><span style="font-family:宋體; font-size:12pt">×10<sup>-6</sup></span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">2</span></strong><strong><span style="font-family:宋體; font-size:12pt">×10<sup>-6</sup></span></strong></p></td><td><p style="text-align:center"><strong><span style="font-family:宋體; font-size:12pt">2</span></strong><strong><span style="font-family:宋體; font-size:12pt">×10<sup>-5</sup></span></strong></p></td></tr></tbody></table><p> </p><p><strong><span style="font-family:宋體; font-size:12pt"> 檢定項(xiàng)目</span></strong></p><p><strong><span style="font-family:宋體; font-size:12pt"> 整套二等標(biāo)準(zhǔn)電阻器（</span></strong><strong><span style="font-size:12pt">10<sup>-3</sup>-10<sup>5</sup></span></strong><strong><span style="font-size:12pt">Ω</span></strong><strong><span style="font-family:宋體; font-size:12pt">）、</span></strong><strong><span style="font-size:12pt">0.005</span></strong><strong><span style="font-family:宋體; font-size:12pt">級(jí)電阻箱、</span></strong><strong><span style="font-size:12pt">BZ11</span></strong><strong><span style="font-family:宋體; font-size:12pt">等過渡電阻器。</span></strong></p><p><strong> </strong></p></div> <div id="pvhr3jx3r5" class="tagContent" id="tagContent1" style="display: block;"><link rel="stylesheet" type="text/css" href="/css/MessageBoard_style.css"> <script language="javascript" src="/skins/Scripts/order.js?v=20210318" type="text/javascript"></script> <a name="order" id="order"></a> <div id="pvhr3jx3r5" class="ly_msg" id="ly_msg"> <form method="post" 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