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宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體, SimSun;">DMG2670數(shù)字兆歐表原理與技術(shù)參數(shù)</span></strong></span></p><p style="text-indent:14px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體, SimSun;">1．儀表工作原理</span></strong><strong></strong></span></p><p style="text-indent: 28px;line-height: 150%"><span style="font-family: 宋體; font-size: 16px;">該儀器由中大規(guī)模集成電路組成。本表輸出功率大，短路電流值高，輸出電壓等級(jí)多（有四個(gè)電壓等級(jí)）。工作原理為由機(jī)內(nèi)電池作為電源經(jīng)DC/DC變換產(chǎn)生的直流高壓由E極出經(jīng)被測(cè)試品到達(dá)L極，從而產(chǎn)生一個(gè)從E到L極的電流，經(jīng)過I/V變換經(jīng)除法器完成運(yùn)算直接將被測(cè)的絕緣電阻值由LCD顯示出來。</span></p><p style="text-indent:14px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 14px;"><span style="font-size: 16px; font-family: "Times New Roman";">2</span><span style="font-size: 16px; font-family: 宋體;">．儀表電路框圖</span></span></strong><strong></strong></span></p><p style="text-indent:28px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;">如圖所示：</span></p><p style="text-align:center;line-height:27px"><span style="position: absolute; z-index: 1; left: 0px; margin-left: 0px; margin-top: 4.5333px; width: 353px; height: 106px; font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 711px; height: 215px;" src="https://img50.chem17.com/9/20241105/638663894621854800893.png" title="5021a78b-7b43-41fa-9e86-d58e1403624d.png" alt="5021a78b-7b43-41fa-9e86-d58e1403624d.png" width="711" height="215"/></p><p style="text-indent:14px;line-height:27px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong></strong></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"></span></p><p style="line-height:27px"><strong><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 黑體; font-size: 16px;">二．DMG2670數(shù)字兆歐表功能特點(diǎn)</span></span></strong><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 黑體; font-size: 16px;"></span><strong></strong></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;">本表具有以下特點(diǎn)：</span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;">·輸出功率大、帶載能力強(qiáng)，抗干擾能力強(qiáng)。</span></p><p style="text-indent:28px"><span style="font-family: 宋體; font-size: 16px;">本表外殼由高強(qiáng)度鋁合金組成，機(jī)內(nèi)設(shè)有等電位保護(hù)環(huán)和四階有源低通濾波器，對(duì)外界工頻及強(qiáng)電磁場可起到有效的屏蔽作用。對(duì)容性試品測(cè)量由于輸出短路電流大于1.6mA，很容易使測(cè)試電壓迅速上升到輸出電壓的額定值。對(duì)于低阻值測(cè)量由于采用比例法設(shè)計(jì)故電壓下落并不影響測(cè)試精度。</span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: 宋體;">·本儀表不需人力作功，由電池供電，量程可自動(dòng)轉(zhuǎn)換。一目了然的面板操作和</span><span style="font-size: 14px; font-family: "Times New Roman";">LCD</span><span style="font-size: 14px; font-family: 宋體;">顯示使得測(cè)量十分方便和迅捷。</span></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;">·本表輸出短路電流可直接測(cè)量，不需帶載測(cè)量進(jìn)行估算。</span></p><p style="text-indent:14px"><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: 484px; height: 731px;" src="https://img48.chem17.com/9/20241105/638663899463083360920.jpg" title="DMG2670數(shù)字兆歐表.jpg" alt="DMG2670數(shù)字兆歐表.jpg" width="484" height="731"/></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"></span><br/></p><h1 style="margin-left:0;text-indent:0;line-height:150%"><span style="font-size: 16px; font-family: 宋體, SimSun;"><strong><span style="line-height: 150%; font-size: 16px;">三．DMG2670數(shù)字兆歐表技術(shù)指標(biāo)</span></strong></span><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 黑體; line-height: 150%; font-size: 16px;"></span></strong><strong></strong></span></h1><p style=";text-indent:7px"><span style="font-family: 宋體, SimSun; font-size: 16px;">① 使用條件</span></p><p style=";text-indent:35px"><span style="font-family: 宋體; font-size: 16px;">環(huán)境溫度：0℃～+45℃ 相對(duì)濕度：≤85%RH</span></p><p style=";text-indent:7px"><span style="font-family: 宋體, SimSun; font-size: 16px;">② 輸出電壓等級(jí)、測(cè)量范圍、分辨率、誤差</span></p><p style=";text-indent:35px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 14px;">輸出電壓等級(jí)：</span><span style="font-family: "Times New Roman"; font-size: 14px;">100V<span style="font-size: 16px; font-family: 宋體;">，</span><span style="font-size: 16px; font-family: "Times New Roman";">250V</span><span style="font-size: 16px; font-family: 宋體;">，</span><span style="font-size: 16px; font-family: "Times New Roman";">500V</span><span style="font-size: 16px; font-family: 宋體;">，</span><span style="font-size: 16px; font-family: "Times New Roman";">1000V</span></span></span></p><p style=";text-indent:35px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 14px;">測(cè)量范圍：0～19999</span><span style="font-family: "Times New Roman"; font-size: 14px;">MΩ</span></span></p><p style=";text-indent:35px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: 宋體; font-size: 14px;"><span style="font-size: 16px; font-family: 宋體;">分</span> <span style="font-size: 16px; font-family: 宋體;">辨</span> <span style="font-size: 16px; font-family: 宋體;">率：</span>0.01</span><span style="font-family: "Times New Roman"; font-size: 14px;">MΩ</span><span style="font-family: 宋體; font-size: 14px;">，0.1M</span><span style="font-family: "Times New Roman"; font-size: 14px;">Ω</span><span style="font-family: 宋體; font-size: 14px;">，1.0</span><span style="font-family: "Times New Roman"; font-size: 14px;">MΩ</span><span style="font-family: 宋體; font-size: 14px;">，10.0</span><span style="font-family: "Times New Roman"; font-size: 14px;">MΩ</span></span></p><p style=";text-indent:35px"><span style="font-family: 宋體, SimSun; font-size: 16px;">相對(duì)誤差：</span></p><div id="f55nvtnxj1n" class="tabledivclass" style="width: 99%; float: left;"><table border="1" cellspacing="0" align="left" style="max-width: 748px; width: 861px; table-layout: fixed;"><colgroup><col data-offset-left="8.584558486938477" data-offset-right="59.02573204040527" data-resize-pixel="50.4411735534668" data-resize-percent="5.858440598544344" style="width: 5.8584%;"/><col data-offset-left="59.02573013305664" data-offset-right="123.58455276489258" data-resize-pixel="64.55882263183594" data-resize-percent="7.498121095451328" style="width: 7.4981%;"/><col data-offset-left="123.58454895019531" data-offset-right="174.0257225036621" data-resize-pixel="50.4411735534668" data-resize-percent="5.858440598544344" style="width: 5.8584%;"/><col data-offset-left="174.02572631835938" data-offset-right="203.29043006896973" data-resize-pixel="29.26470375061035" data-resize-percent="3.3989202962381357" style="width: 3.3989%;"/><col data-offset-left="203.29043579101562" data-offset-right="260.79043197631836" data-resize-pixel="57.499996185302734" data-resize-percent="6.6782806254707" style="width: 6.6783%;"/></colgroup><tbody><tr class="firstRow"><td valign="center" style="padding: 0px; border-width: 1px; border-style: solid; border-color: windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">規(guī)格額定電壓</span></p></td><td valign="center" style="padding: 0px; border-width: 1px; border-style: solid; border-color: windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">測(cè)量上限</span></p><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: 宋體;">（</span>MΩ）</span></p></td><td valign="center" colspan="2" style="padding: 0px; border-width: 1px; border-style: solid; border-color: windowtext; background: rgb(255, 255, 255);"><p style="margin-right:3px;margin-left:3px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-size: 14px; font-family: 宋體;">有效測(cè)量范圍（</span>MΩ）</span></p><p style="margin-right:3px;margin-left:3px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">準(zhǔn)確度等級(jí)</span></p></td><td valign="center" style="padding: 0px; border-width: 1px; border-style: solid; border-color: windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">備注</span></p></td></tr><tr><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">100V</span></p></td><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體; font-size: 16px;">20000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體; font-size: 16px;">0.5-100</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">⑸</span></p></td><td valign="center" rowspan="2" style="padding: 0px; border-width: 1px; border-style: solid; border-color: windowtext; background: rgb(255, 255, 255);"><p style="margin-right:1px;margin-left:1px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">有效測(cè)量范圍外</span></p><p style="margin-right:1px;margin-left:1px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">精度不參與計(jì)量</span></p></td></tr><tr><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">100-1000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">⑽</span></p></td></tr><tr><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體; font-size: 16px;">250V</span></p></td><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">20000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">1-1000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">⑸</span></p></td><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體; font-size: 16px;">起始為0.1MΩ</span></p></td></tr><tr><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">1000-2000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">⑽</span></p></td></tr><tr><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">500V</span></p></td><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">20000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">1-1000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">⑸</span></p></td><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體; font-size: 16px;">起始為0.1MΩ</span></p></td></tr><tr><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">1000-2000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">⑽</span></p></td></tr><tr><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">1000V</span></p></td><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">20000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體; font-size: 16px;">1-1000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">⑸</span></p></td><td valign="center" rowspan="2" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體; font-size: 16px;">起始為1MΩ</span></p></td></tr><tr><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext; background: rgb(255, 255, 255);"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">1000-2000</span></p></td><td valign="center" style="padding: 0px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="margin-right:7px;margin-left:7px;text-align:center;line-height:18px"><span style="font-family: 宋體, SimSun; font-size: 16px;">⑽</span></p></td></tr></tbody></table></div><p><span style="font-family: 宋體; font-size: 16px;"><br/><br/></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><br/></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><br/></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><br/></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><br/></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><br/></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><br/></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><br/></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"></span></p><p><span style="font-family: 宋體; font-size: 16px;">③ 輸出最高電壓帶載能力及短路電流</span></p><p style=";text-indent:28px"><span style="font-size: 16px;"><span style="font-family: 宋體; font-size: 14px;"><span style="font-size: 16px; font-family: 宋體;">電壓/負(fù)載：10</span>00V/20</span><span style="font-family: "Times New Roman"; font-size: 14px;">MΩ</span></span></p><p style=";text-indent:21px"><span style="font-family: 宋體; font-size: 16px;">電壓跌落：約10%</span></p><p style=";text-indent:21px"><span style="font-family: 宋體; font-size: 14px;"><span style="font-size: 16px; font-family: 宋體;">短路電流:</span> >1.6mA</span></p><p style=";text-indent:7px"><span style="font-family: 宋體; font-size: 16px;">④ 電源適用范圍、功率損耗</span></p><p style=";text-indent:35px"><span style="font-family: 宋體; font-size: 16px;">直流：12V</span></p><p style=";text-indent:35px"><span style="font-family: 宋體; font-size: 14px;"><span style="font-size: 16px; font-family: 宋體;">功耗：靜態(tài)功耗≤160</span>mW<span style="font-size: 16px; font-family: 宋體;">；最大功率≤</span>2.5W</span></p><p style=";text-indent:7px"><span style="font-family: 宋體; font-size: 16px;">⑤ 體積與重量</span></p><p style=";text-indent:35px"><span style="font-family: 宋體; font-size: 14px;"><span style="font-size: 16px; font-family: 宋體;">體積：217</span>mm<span style="font-size: 16px; font-family: 宋體;">（L）×217</span>mm(W)×133mm(D)；</span></p><p style=";text-indent:35px"><span style="font-family: 宋體; font-size: 14px;">重量：<1.8kg</span></p><h1 style="margin-left:0;text-indent:0;line-height:150%"><span style="font-family: 宋體, SimSun;"><strong><span style="line-height: 150%; font-size: 16px;">四．DMG2670數(shù)字兆歐表使用說明</span></strong></span><strong></strong></h1><p style="text-indent:28px;line-height:24px"><strong><span style="font-family: 宋體;font-size: 14px"><span style="font-family:Times New Roman">1</span><span style="font-family:宋體">、測(cè)量步驟</span></span></strong><strong></strong></p><p style=";text-indent:28px"><span style="font-size: 14px; font-family: 宋體;">開啟電源開關(guān)“ON"，選擇所需電壓等級(jí),開機(jī)默認(rèn)為500V檔，選擇所需電壓檔位，對(duì)應(yīng)指示燈亮，輕按一下 “高壓"鍵，高壓指示燈亮，LCD顯示的穩(wěn)定數(shù)值乘以10即為被測(cè)的絕緣電阻值。當(dāng)試品的絕緣電阻值超過儀表量程的上限值時(shí)，顯示屏<a class="bjFfcClass" style="color: rgb(0, 0, 0); text-decoration: underline;"><span style="font-size: 14px; font-family: 宋體; color: rgb(0, 0, 0);">首-位</span></a>顯示“1"，后三位熄滅。關(guān)閉高壓時(shí)只需再按一下 “高壓"鍵，關(guān)閉整機(jī)電源時(shí)按一下電源“OFF"。</span></p><p style=";text-indent:28px"><span style=";font-family:宋體;font-size:14px">注：測(cè)量時(shí)，由于試品有吸收、極化過程，絕緣值讀數(shù)逐漸向大數(shù)值漂移或有一些上下跳動(dòng)，系正常現(xiàn)象。</span></p><p style="text-indent:28px;line-height:27px"><strong><span style="font-family: 宋體;font-size: 14px"><span style="font-family:Times New Roman">2</span><span style="font-family:宋體">、接線端子符號(hào)含義</span></span></strong><strong></strong></p><p><span style="font-size: 14px; font-family: 宋體;">測(cè)量絕緣電阻時(shí)，線路“L"與被測(cè)物同大地絕緣的導(dǎo)電部分相接，接地“E"與被測(cè)物體外殼或接地部分相接，屏蔽“G"與被測(cè)物體保護(hù)遮蔽部分相接或其他不參與測(cè)量的部分相接，以消除表泄漏所引起的誤差。測(cè)量電氣產(chǎn)品的元件之間絕緣電阻時(shí)，可將“L"和“E"端接在任一組線頭上進(jìn)行。如測(cè)量發(fā)電機(jī)相間絕緣時(shí)，三組可輪流交換，空出的一相應(yīng)安全接地。</span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><br/></span><br/></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">DMG2670數(shù)字兆歐表是電力、郵電、通信、機(jī)電安裝和維修以及利用電力作為工業(yè)動(dòng)力或能源的工業(yè)企業(yè)部門常用而<a class="bjFfcClass" style="color: rgb(0, 0, 0); text-decoration: underline;"><span style="font-family: 宋體, SimSun; font-size: 16px; color: rgb(0, 0, 0);">不可少</span></a>的儀表。它適用于測(cè)量各種絕緣材料的電阻值及變壓器、電機(jī)、電纜及電器設(shè)備等的絕緣電阻。</span></p><p style="margin-left:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: Wingdings; font-size: 16px;">u </span><strong><span style="font-family: 黑體; font-size: 16px;">慎重保證</span></strong><strong></strong></span></p><p style="text-indent:28px;line-height:150%"><span style="font-family: 宋體, SimSun; font-size: 16px;">本公司生產(chǎn)的產(chǎn)品，在發(fā)貨之日起一個(gè)月內(nèi)，如產(chǎn)品出現(xiàn)缺陷，實(shí)行包換。一年（包括一年）內(nèi)如產(chǎn)品出現(xiàn)缺陷，實(shí)行免費(fèi)維修。一年以上如產(chǎn)品出現(xiàn)缺陷，實(shí)行有償終身維修。如有合同約定的按合同執(zhí)行。</span></p><p style="text-indent:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"> </span></p><p style="margin-left:28px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><span style="font-family: Wingdings; font-size: 16px;">u </span><strong><span style="font-family: 黑體; font-size: 16px;">安全要求</span></strong><strong></strong></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;">請(qǐng)閱讀下列安全注意事項(xiàng)，以免人身傷害，并防止本產(chǎn)品或與其相連接的任何其它產(chǎn)品受到損壞。為了避免可能發(fā)生的危險(xiǎn)，本產(chǎn)品只可在規(guī)定的范圍內(nèi)使用。</span></p><p style="text-indent:29px;line-height:150%"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><i><span style="font-family: 宋體; font-size: 14px;">只有合格的技術(shù)人員才可執(zhí)行維修</span></i></strong><strong><span style="font-family: 宋體; font-size: 14px;">。</span></strong><span style="font-size: 16px; font-family: 宋體, SimSun; text-decoration: underline;"></span></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;">—</span></strong><strong><span style="font-family: 宋體; font-size: 16px;">防止火災(zāi)或人身傷害</span></strong><strong></strong></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;"> </span></strong></span></p><p style="text-indent:14px;line-height:120%"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; line-height: 120%; font-size: 16px;">使用適當(dāng)?shù)碾娫淳€。</span></strong><span style="font-family: 宋體; font-size: 14px;">只可使用本產(chǎn)品專用、并且符合本產(chǎn)品規(guī)格的電源線。</span></span></p><p style="text-indent:14px;line-height:120%"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; line-height: 120%; font-size: 16px;">正確地連接和斷開。</span></strong><span style="font-family: 宋體; font-size: 14px;">當(dāng)測(cè)試導(dǎo)線與帶電端子連接時(shí)，請(qǐng)勿隨意連接或斷開測(cè)試導(dǎo)線。</span></span></p><p style="text-indent:14px;line-height:120%"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; line-height: 120%; font-size: 16px;">產(chǎn)品接地。</span></strong><span style="font-family: 宋體; font-size: 14px;">本產(chǎn)品除通過電源線接地導(dǎo)線接地外，產(chǎn)品外殼的接地柱必須接地。為了防止電擊，接地導(dǎo)體必須與地面相連。在與本產(chǎn)品輸入或輸出終端連接前，應(yīng)確保本產(chǎn)品已正確接地。</span></span></p><p><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;">注意所有終端的額定值。</span></strong><span style="font-family: 宋體; font-size: 14px;">為了防止火災(zāi)或電擊危險(xiǎn)，請(qǐng)注意本產(chǎn)品的所有額定值和標(biāo)記。在對(duì)本產(chǎn)品進(jìn)行連接之前，請(qǐng)閱讀本產(chǎn)品使用說明書，以便進(jìn)一步了解有關(guān)額定值的信息。</span></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;">請(qǐng)勿在無儀器蓋板時(shí)操作。</span></strong><span style="font-family: 宋體; font-size: 14px;">如蓋板或面板已卸下，請(qǐng)勿操作本產(chǎn)品。</span><strong></strong></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;">使用適當(dāng)?shù)谋ｋU(xiǎn)絲。</span></strong><span style="font-family: 宋體; font-size: 14px;">只可使用符合本產(chǎn)品規(guī)定類型和額定值的保險(xiǎn)絲。</span></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;">避免接觸裸露電路和帶電金屬。</span></strong><span style="font-family: 宋體; font-size: 14px;">產(chǎn)品有電時(shí)，請(qǐng)勿觸摸裸露的接點(diǎn)和部位。</span></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;">在有可疑的故障時(shí)，請(qǐng)勿操作。</span></strong><span style="font-family: 宋體; font-size: 14px;">如懷疑本產(chǎn)品有損壞，請(qǐng)本公司維修人員進(jìn)行檢查，切勿繼續(xù)操作。</span></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;">請(qǐng)勿在潮濕環(huán)境下操作。</span></strong><strong></strong></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: "Times New Roman"; font-size: 14px;"> </span></strong></span></p><p style="text-indent:14px"><span style="font-family: 宋體, SimSun; font-size: 16px;"><strong><span style="font-family: 宋體; font-size: 16px;">請(qǐng)勿在易爆環(huán)境中操作。</span></strong><strong></strong></span></p><p style="text-indent:14px"><span 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