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class="desc">AC5/1～4指針式直流檢流計(jì)屬于便攜型磁電式結(jié)構(gòu)，其可動部份固定在張絲上面，所以用時需要水平放置。如果儀器略有傾斜對其影響不大，檢流計(jì)的全部測量機(jī)構(gòu)被膠木外殼所保護(hù)，檢流計(jì)密封性良好，可使檢流計(jì)之測量機(jī)構(gòu)不受外界污垢或其他雜質(zhì)的影響。AC5/2型直流指針式檢流計(jì)適合于一般研究單位、學(xué)校及電工試驗(yàn)之需要，供各種直流電橋、電位差計(jì)及其他儀器作零位指示之用。</div> </p></p> </div>  <div id="o2v1e1dxvmth" class="x-1"> <div id="o2v1e1dxvmth" class="b-1">產(chǎn)品特性<span>Product characteristics</span></div> <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> <tr><th>品牌</th><td>其他品牌</td><th>產(chǎn)地類別</th><td>國產(chǎn)</td></tr><tr><th>應(yīng)用領(lǐng)域</th><td>石油,地礦,能源,電子,電氣</td> <th></th><td></td></tr> </tbody> </table> </section><p><span style="font-family:宋體"></span></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px; border: 0px;">AC15/1～6復(fù)射式直流檢流計(jì)</strong>是根據(jù)載流線圈在磁場中受到力矩而偏轉(zhuǎn)的原理制成的。普通電表中線圈是安放在軸承上，用彈簧游絲來維持平衡，用指針來指示偏轉(zhuǎn)。由于軸承有摩擦，被測電流不能太弱。檢流計(jì)使用極細(xì)的金屬懸絲代替軸承懸掛在磁場中，由于懸絲細(xì)而長，反抗力矩很小，所以有很弱的電流通過線圈就足以使它產(chǎn)生顯著的偏轉(zhuǎn)。因而檢流計(jì)比一般的電流表靈敏的多，可以測量微電流（10-7~10-10A）或者微電壓（10-3~10-6V），如光電流、生理電流、溫差電動勢等。*記錄神經(jīng)動作電位，就是用此類儀器實(shí)現(xiàn)的。</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);"><strong style="margin: 0px; padding: 0px; border: 0px;"><strong style="margin: 0px; padding: 0px; border: 0px;">AC15/1～6復(fù)射式直流檢流計(jì)</strong>結(jié)構(gòu)</strong></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; border: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-family: arial, 宋體, sans-serif; font-size: 14px;">檢流計(jì)由三部分組成：(1)磁場部分：由*磁鐵(N,S)產(chǎn)生磁場，圓柱形軟鐵心(J)使氣隙中磁場呈均勻輻射狀。(2)偏轉(zhuǎn)部分：能在氣隙中轉(zhuǎn)動的矩形線圈C及從上下拉緊線圈的金屬張絲E,只要有很小的力矩作用，就能使線圈偏轉(zhuǎn)。(3)讀數(shù)部分：小鏡M固定在動圈上，它把光源射進(jìn)來的光束反射到標(biāo)尺上形成一個光標(biāo)，當(dāng)電流流過動圈時，動圈受力偏轉(zhuǎn)而帶動小鏡M轉(zhuǎn)過?角，因而反射光束偏轉(zhuǎn)的角度為,光標(biāo)在標(biāo)尺上移動的距離n=L*α，L為小鏡到標(biāo)尺的距離</span></p><p><span style="font-family:宋體"><br/></span><br/></p><p><span style="font-family:宋體">、主要技術(shù)數(shù)據(jù)：</span></p><div id="o2v1e1dxvmth" class="tabledivclass" style="width: 99%; height: 163px;"><table align="center" border="1" cellpadding="0" cellspacing="0" style="width: 467px; max-width: 748px;"><tbody><tr class="firstRow"><td rowspan="2" style="width:95px"><p style="text-align:center"><span style="font-family:宋體">參數(shù)</span></p></td><td rowspan="2" style="width:78px"><p style="text-align:center"><span style="font-family:宋體">測量單位</span></p></td><td colspan="4" style="vertical-align:top; width:289px"><p style="text-align:center"><span style="font-family:宋體">檢流計(jì)型號</span></p></td></tr><tr><td style="vertical-align:top; width:70px"><p style="text-align:center">AC5/1</p></td><td style="vertical-align:top; width:74px"><p style="text-align:center">AC5/2</p></td><td style="vertical-align:top; width:72px"><p style="text-align:center">AC5/3</p></td><td style="vertical-align:top; width:72px"><p style="text-align:center">AC5/4</p></td></tr><tr><td style="vertical-align:top; width:95px"><p style="text-align:center"><span style="font-family:宋體">內(nèi)阻</span></p></td><td style="vertical-align:top; width:78px"><p style="text-align:center">Ω</p></td><td style="vertical-align:top; width:70px"><p style="text-align:center"><20</p></td><td style="vertical-align:top; width:74px"><p style="text-align:center"><50</p></td><td style="vertical-align:top; width:72px"><p style="text-align:center"><250</p></td><td style="vertical-align:top; width:72px"><p style="text-align:center"><1200</p></td></tr><tr><td style="vertical-align:top; width:95px"><p style="text-align:center"><span style="font-family:宋體">外臨界電阻</span></p></td><td style="vertical-align:top; width:78px"><p style="text-align:center">Ω</p></td><td style="vertical-align:top; width:70px"><p style="text-align:center"><150</p></td><td style="vertical-align:top; width:74px"><p style="text-align:center"><500</p></td><td style="vertical-align:top; width:72px"><p style="text-align:center"><3000</p></td><td style="vertical-align:top; width:72px"><p style="text-align:center"><14000</p></td></tr><tr><td style="vertical-align:top; width:95px"><p style="text-align:center"><span style="font-family:宋體">電流分度率</span></p></td><td style="vertical-align:top; width:78px"><p style="text-align:center">A/div</p></td><td style="vertical-align:top; width:70px"><p style="text-align:center"><5×10<sup>-6</sup></p></td><td style="vertical-align:top; width:74px"><p style="text-align:center"><2×10<sup>-6</sup></p></td><td style="vertical-align:top; width:72px"><p style="text-align:center"><7×10<sup>-7</sup></p></td><td style="vertical-align:top; width:72px"><p style="text-align:center"><4×10<sup>-7</sup></p></td></tr><tr><td style="vertical-align:top; width:95px"><p style="text-align:center"><span style="font-family:宋體">阻尼時間</span></p></td><td style="vertical-align:top; width:78px"><p style="text-align:center">S</p></td><td colspan="4" style="vertical-align:top; width:289px"><p style="text-align:center"><2.5</p></td></tr></tbody></table></div><p>2<span style="font-family:宋體">、外型尺寸：</span>160×105×150(mm)</p><p>3<span style="font-family:宋體">、質(zhì)量：約</span>1.5kg</p><p><br/></p> </div> <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="o2v1e1dxvmth" class="ly_msg" id="ly_msg"> <form method="post" name="form2" id="form2"> <h3>留言框 </h3> <ul> <li> <h4 class="xh">產(chǎn)品：</h4> <div 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