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/><span>產(chǎn)品型號：</span></li> <li><img src="/skins/333987/images/prodetail_cs_icon.png" /><span>廠商性質(zhì)：</span>生產(chǎn)廠家</li> <li><img src="/skins/333987/images/prodetail_cs_icon.png" /><span>更新時間：</span>2024-11-07</li> <li><img src="/skins/333987/images/prodetail_cs_icon.png" /><span>訪問量：</span>1533</li> </ul> <div id="tqrzhqzaxmzj" class="pro_detail_btn"> <a href="/order.html" class="prodtl_btn1">產(chǎn)品咨詢</a><a href="/contact.html" class="prodtl_btn2">聯(lián)系我們</a> </div> </div> <div id="tqrzhqzaxmzj" class="clear"></div> </div>  </div> <div id="tqrzhqzaxmzj" class="lhtab"><span id="tqrzhqzaxmzj" class="on span1">產(chǎn)品詳情</span><span id="tqrzhqzaxmzj" class="span2">在線留言</span></div> <div id="tqrzhqzaxmzj" class="page-procon"> <p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong>QJ36F直流電阻測試量儀</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">QJ36F直流電阻測試量儀是QJ36，QJ57電橋更新?lián)Q代的產(chǎn)品，儀器應(yīng)用單片機原理制成，具有以下特點：</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">1.儀器使用整五位的∑-△A/D轉(zhuǎn)換器，精度為二進制的十六位，滿量程2.5000V,而市場絕大部分電阻測試儀采用四位半的雙積分A/D轉(zhuǎn)換器（如ICL7135，ICL7129），精度為二進制的十四位，滿量程2.000V。</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">2.儀器的分辨率為0.01μΩ（<strong style="margin: 0px;">10<sup style="margin: 0px;">-8</sup>Ω）,</strong>尤其適合超大截面導(dǎo)線和超小截面微細導(dǎo)線的測量。儀器運用單片機多次采樣取平均值的方法，能獲取可靠的測量結(jié)果，同時具有數(shù)顯穩(wěn)定，可讀性強的優(yōu)點。</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">3.儀器測量范圍廣：0.01μΩ－2.5kΩ。儀器設(shè)置了同一名義量程檔位有兩種電流可選擇的功能，（請參閱技術(shù)指標所列“電流”一檔）?？朔藴y量電流性，避免了某種檔位電流偏大而導(dǎo)致被測物體發(fā)熱的不足。</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">4.儀器具有溫度補償功能，在常溫下測出被測物在20℃時的電阻值，特別適用于電纜行業(yè)的在線實時測量，即節(jié)約了時間又省卻了材料的不必要浪費。</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">5.儀器具有正反向電流測試，消除熱電勢影響。</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">6.儀器應(yīng)用單片機原理制成，智能化程度高，故儀器的功能齊面，操作方便，性能穩(wěn)定，可靠性強。</strong></span></p><table align="center" border="1" cellpadding="0" cellspacing="0" style="margin: 0px; border-collapse: collapse; border-spacing: 0px; color: rgb(85, 85, 85); font-size: 14px; background-color: rgb(255, 255, 255); font-family: tahoma; line-height: 26px; max-width: 100%; width: 644px; word-break: inherit;"><tbody style="margin: 0px;"><tr style="margin: 0px;"><td rowspan="2" style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">量程</strong></span></p></td><td colspan="2" style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">H</strong></span></p></td><td colspan="2" style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">L</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">△誤差</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">電流</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">△誤差</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">電流</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">250μΩ</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">-</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">-</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.08% +0.03%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">10A</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">2.5mΩ</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.02%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">10A</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.08% +0.03%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">1A</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">25mΩ</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">1A</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">1A</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">250mΩ</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">1A</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">100mA</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">2.5Ω</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">100mA</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">10mA</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">25Ω</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">10mA</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">1mA</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">250Ω</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">1mA</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">100μA</strong></span></p></td></tr><tr style="margin: 0px;"><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">2.5kΩ</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">±(0.04%Rx+0.01%Rn)</strong></span></p></td><td style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">100μA</strong></span></p></td><td colspan="2" style="margin: 0px; padding: 0px;"><p style="margin: 0px; padding: 0px;"><span style="font-size:14px;"><strong style="margin: 0px;">Rx：儀器顯示值，Rn：所測量程滿度值。</strong></span></p></td></tr></tbody></table><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">外形尺寸：133×360×360mm</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"><strong style="margin: 0px;">重量：6KG</strong></span></p><p style="margin: 0px; padding: 0px; color: rgb(85, 85, 85); font-family: Tahoma; font-size: 14px; background-color: rgb(255, 255, 255);"><span style="font-size:14px;"> </span></p><p style="margin-left:22.5pt;text-indent:0pt;"><span style="font-size:14px;"> </span></p><ul style="list-style-type:square;"><li align="center" style="text-align:center;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">外形結(jié)構(gòu)</span></strong></span></li></ul><p style="margin-left:22.45pt;text-indent:28.1pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">QJ36F型直流電阻測量儀外型結(jié)構(gòu)見圖一所示：</span></strong></span></p><p align="center" style="margin-left:22.5000pt;text-align:center;"><span style="font-size:14px;"><img alt="" src="https://img79.chem17.com/gxhpic_22d2937a21/3619961c043fc9589c17247195db5db50c9b1ff0f6950e925f48963a408b14e4eabeb36a47b8c1f3.png" style="width: 577px; height: 187px;" /> </span></p><ul style="list-style-type:square;"><li align="center" style="text-align:center;"><span style="font-size:14px;"><span style="font-family:宋體;">前面板示意圖</span></span></li></ul><p style="margin-left:22.5pt;"><span style="font-size:14px;"><img alt="" src="https://img76.chem17.com/gxhpic_22d2937a21/3619961c043fc9589c17247195db5db5e84c041f07ab88a3bc364399abd23b2605a6207e4326ceb0.png" style="width: 577px; height: 166px;" /> </span></p><ul style="list-style-type:square;"><li align="center" style="text-align:center;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">后面板示意圖</span></strong></span></li></ul><p align="center" style="margin-left:22.5000pt;text-align:center;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">圖一</font> QJ36F型外形結(jié)構(gòu)圖</span></strong></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:宋體;">1． </span></span><strong><span style="font-family:宋體;">LED顯示器：顯示整五位的實測數(shù)據(jù)。</span></strong></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:宋體;">2． </span></span><strong><span style="font-family:宋體;"><font face="宋體">復(fù)原鍵：按此鍵，儀器恢復(fù)到開機狀態(tài)，即量程</font>H,2.5k</span></strong><strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">檔位。</span></strong></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">3． </span></span><strong><span style="font-family:宋體;"><font face="宋體">量程</font>H<font face="宋體">：此欄為常用量程。有七檔</font></span></strong><span style="font-family:宋體;">：</span><strong><span style="font-family:宋體;">分別為</span></strong><span style="font-family:宋體;">2.5k</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(100<font face="宋體">μ</font><font face="Calibri">A), 250</font></span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(1mA), 25</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(10mA), 2.5</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(100mA), 250m</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(1A), 25m</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(1A), 2.5m</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(10A)<font face="宋體">。</font></span></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:宋體;">4． </span></span><strong><span style="font-family:宋體;"><font face="宋體">量程右移鍵</font>“</span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps3.jpg" width="25" /><strong><span style="font-family:宋體;">”表示量程檔位從左到右依次轉(zhuǎn)換。</span></strong></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:宋體;">5． </span></span><strong><span style="font-family:宋體;"><font face="宋體">量程左移鍵</font>“</span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps4.jpg" width="25" /><strong><span style="font-family:宋體;">”表示量程檔位從右到左依次轉(zhuǎn)換。</span></strong></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:宋體;">6． </span></span><strong><span style="font-family:宋體;"><font face="宋體">量程</font>L：此欄是低電流特需量程。有七檔，分別為250</span></strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(100<font face="宋體">μ</font><font face="Calibri">A), 25</font></span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(1mA), 2.5</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(10mA), 250m</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(100mA), 25m</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(1A), 2.5m</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(1A),250<font face="宋體">μ</font></span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">(10A)<font face="宋體">。</font></span></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">7． </span></span><strong><span style="font-family:宋體;">電流換向按鈕。反向電流，按鈕燈亮。正向電流，按鈕燈滅。</span></strong></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">8． </span></span><strong><span style="font-family:宋體;">溫度補償：按下此鍵溫度補償，指示燈亮；松開此鍵，無此功能，指示燈滅。</span></strong></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">9． </span></span><strong><span style="font-family:宋體;">傳感器：如需溫度補償，必須插上外接傳感器</span></strong></span></p><p style="margin-left:42.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">10． </span></span><strong><span style="font-family:宋體;">調(diào)零：分上下兩部分，</span></strong><strong><span style="font-family:calibri;">”</span></strong><strong><span style="font-family:宋體;"> +</span></strong><strong><span style="font-family:calibri;">”</span></strong><strong><span style="font-family:宋體;"><font face="宋體">為上部分，是</font>“量程<font face="Calibri">L</font><font face="宋體">” </font><font face="Calibri">2.5m</font></span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;"><font face="宋體">和</font>250 <font face="宋體">μ</font></span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;">的檔位的正向電流調(diào)零電位器。</span></strong><strong><span style="font-family:calibri;">”</span></strong><strong><span style="font-family:宋體;">-</span></strong><strong><span style="font-family:calibri;">“</span></strong><strong><span style="font-family:宋體;"><font face="宋體">為下部分，是</font>“量程<font face="Calibri">L</font><font face="宋體">” </font><font face="Calibri">2.5m</font></span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;"><font face="宋體">和</font>250 <font face="宋體">μ</font></span></strong><strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">的檔位的反向電流調(diào)零電位器。</span></strong></span></p><p style="margin-left:39.7pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">11． </span></span><strong><span style="font-family:宋體;"><font face="宋體">短接</font>P<font face="宋體">端：（為</font><font face="Calibri">P</font></span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub></strong><strong><span style="font-family:宋體;"> C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">和</font>P</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub></strong><strong><span style="font-family:宋體;"> C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">2 </span></span></sub><span style="font-family:宋體;"><font face="宋體">的兩根輸入線短接按鈕）。其有兩個作用：一，不接負載，按下</font>P<font face="宋體">端，進行調(diào)零。二，接負載，按下</font><font face="Calibri">P</font><font face="宋體">端，此時負載上的電流得以泄放，儀器處于待機狀態(tài)。</font></span></strong></span></p><p style="margin-left:39.7pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">12． </span></span><strong><span style="font-family:宋體;"><font face="宋體">電流輸入</font>C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub><span style="font-family:宋體;">端。</span></strong></span></p><p style="margin-left:39.7pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">13． </span></span><strong><span style="font-family:宋體;"><font face="宋體">電壓輸入</font>P</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1-2</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">端，提供給</font>P</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub></strong><strong><span style="font-family:宋體;"> C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">和</font>P</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub></strong><strong><span style="font-family:宋體;"> C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">2</span></span></sub><span style="font-family:宋體;">兩根輸入線的插頭所用。</span></strong></span></p><p style="margin-left:39.7pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">14． </span></span><strong><span style="font-family:宋體;"><font face="宋體">電流輸出</font>C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">2</span></span></sub><span style="font-family:宋體;">端</span></strong></span></p><p style="margin-left:39.7pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">15． </span></span><strong><span style="font-family:宋體;">電源開關(guān)。</span></strong></span></p><p style="margin-left:39.7pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">16． </span></span><strong><span style="font-family:宋體;">電源插座。</span></strong></span></p><p style="margin-left:39.7pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:calibri;">17． </span></span><strong><span style="font-family:宋體;">風(fēng)扇。</span></strong></span></p><p style="margin-left:39.7pt;text-indent:-20.25pt;"><span style="font-size:14px;"> </span></p><ul style="list-style-type:square;"><li align="center" style="text-align:center;"><span style="font-size:14px;"><span style="font-family:宋體;">工作原理</span></span></li></ul><ul style="list-style-type:square;"><li><span style="font-size:14px;"><span style="font-family:宋體;">電路結(jié)構(gòu)如圖二</span></span></li></ul><p style="margin-left:40.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><img alt="" src="https://img76.chem17.com/gxhpic_22d2937a21/3619961c043fc9589c17247195db5db517ded29d9cf763266534f008e565c06f6c88d1afabb910a7.png" style="width: 449px; height: 174px;" /> </span></p><p align="center" style="margin-left:40.5000pt;text-indent:0.0000pt;text-align:center;"><span style="font-size:14px;"><span style="font-family:宋體;">圖二</span></span></p><ul style="list-style-type:square;"><li><span style="font-size:14px;"><strong><span style="font-family:宋體;">工作原理</span></strong></span></li></ul><p style="margin-left:21.3000pt;text-indent:21.2000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">鍵盤根據(jù)被測對象選擇量程，再由單片機控制工作源，在被測對象上發(fā)生電壓信號送</font>A/D轉(zhuǎn)換器，經(jīng)單片機處理，在LED顯示器上顯示實測數(shù)據(jù)。</span></strong></span></p><p align="center" style="margin-left:22.5000pt;text-indent:0.0000pt;text-align:center;"><span style="font-size:14px;"> </span></p><ul style="list-style-type:square;"><li align="center" style="text-align:center;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">使用方法</span></strong></span></li></ul><ul style="list-style-type:square;"><li><span style="font-size:14px;"><strong><span style="font-family:宋體;">操作前的準備工作。</span></strong> </span><ul style="list-style-type:square;"><li><span style="font-size:14px;"><strong><span style="font-family:宋體;">儀器小心輕放，避免劇烈的震動。</span></strong></span></li><li><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">儀器應(yīng)在正常環(huán)境工作，溫度</font>10</span><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C~30</span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup><span style="font-family:宋體;">C，相對濕度35%~85%，空氣中不含腐蝕性氣體。</span></strong></span></li><li><span style="font-size:14px;"><strong><span style="font-family:宋體;">測量導(dǎo)線和導(dǎo)體的方法如圖三所示：</span></strong></span></li></ul><span style="font-size:14px;"> </span></li></ul><p style="margin-left:42.5500pt;text-indent:-2.0500pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">測量導(dǎo)線和導(dǎo)體，建議用導(dǎo)線，圖中</font>I</span><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">H</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">為電流高DUAN，</font>I</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">L</span></span></sub><span style="font-family:宋體;"><font face="宋體">為電流低端，</font>AB為導(dǎo)線電阻壓降。從圖可見電流端接觸面要大，電壓端接觸面要小。</span></strong></span></p><p style="margin-left:60.6500pt;text-indent:0.0000pt;"><span style="font-size:14px;"><img alt="" src="https://img76.chem17.com/gxhpic_22d2937a21/3619961c043fc9589c17247195db5db5dd868c513e4072ad1d08b9b48f3d72bd044df3184a026382.png" style="width: 527px; height: 177px;" /> </span></p><p align="center" style="margin-left:60.6500pt;text-indent:0.0000pt;text-align:center;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">圖三</span></strong></span></p><p style="margin-left:60.75pt;text-indent:-20.25pt;"><span style="font-size:14px;"><span style="font-weight:bold;"><span style="font-family:宋體;">1.4 </span></span><strong><span style="font-family:宋體;">儀器與標準電阻和導(dǎo)體的正確接線如圖四所示。</span></strong></span></p><p style="margin-left:14.2pt;text-indent:0pt;"><span style="font-size:14px;"><img alt="" src="https://img77.chem17.com/gxhpic_22d2937a21/3619961c043fc9589c17247195db5db5e1277d1099eee09b0fde6a47bd9b64018533642d935307a7.png" style="width: 577px; height: 189px;" /> </span></p><p align="center" style="margin-left:60.7500pt;text-indent:0.0000pt;text-align:center;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">圖四</span></strong></span></p><p style="margin-left:60.7500pt;text-indent:0.0000pt;"><span style="font-size:14px;"> </span></p><ul style="list-style-type:square;"><li><span style="font-size:14px;"><strong><span style="font-family:宋體;">儀器的操作方法</span></strong> </span><ul style="list-style-type:square;"><li><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">開啟電源，儀器便自動設(shè)置在</font>“量程H”的2.5k</span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">檔位。此時該量程檔位的指示燈即亮，（以后只要選擇了某量程，該量程的指示燈則亮）。</span></strong></span></li></ul><span style="font-size:14px;"> </span></li></ul><p style="margin-left:40.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">請注意！儀器應(yīng)設(shè)置在正向電流工作狀態(tài)。按圖四接上負載，然后設(shè)定在負載所需的量程檔位。剛開機時，儀器需預(yù)熱</font>10<font face="宋體">分鐘。</font></span></strong></span></p><p style="margin-left:40.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.2<font face="宋體">根據(jù)被測物體的性質(zhì)和阻值，選擇“量程</font><font face="Calibri">H</font><font face="宋體">”和“量程</font><font face="Calibri">L</font><font face="宋體">”。量程</font><font face="Calibri">H</font><font face="宋體">的檔位較量程</font><font face="Calibri">L</font><font face="宋體">的檔位，阻值高，電流大。反之，則阻值低，電流小。請根據(jù)需要選定。</font></span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">如選擇量程</font>H<font face="宋體">，按量程</font><font face="Calibri">H</font><font face="宋體">的</font></span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps8.jpg" width="25" /><strong><span style="font-family:宋體;">鍵或</span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps9.jpg" width="25" /><strong><span style="font-family:宋體;"><font face="宋體">鍵。量程便選定在</font>H<font face="宋體">欄。</font></span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">如選擇量程</font>L<font face="宋體">，按量程</font><font face="Calibri">L</font><font face="宋體">的</font></span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps10.jpg" width="25" /><strong><span style="font-family:宋體;">鍵或</span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps11.jpg" width="25" /><strong><span style="font-family:宋體;"><font face="宋體">鍵。量程便選定在</font>L<font face="宋體">欄。</font></span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">按左移鍵</font>“</span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps12.jpg" width="25" /><strong><span style="font-family:宋體;">”，量程檔位從右向左轉(zhuǎn)換，<font face="Calibri">2.5K</font></span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;">→…→<font face="Calibri">2.5m</font></span></strong><strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">。</span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">按右移鍵</font>“</span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps13.jpg" width="25" /><strong><span style="font-family:宋體;">”，量程檔位從右向左轉(zhuǎn)換，<font face="Calibri">2.5m</font></span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;">→…→<font face="Calibri">2.5K</font></span></strong><strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">。</span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">根據(jù)需要設(shè)置合適的測量檔位。在測量時，請稍微等</font>3<font face="宋體">分鐘后，讀取顯示數(shù)值。。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">當</font>LED<font face="宋體">顯示器出現(xiàn)“</font><font face="Calibri">25000</font><font face="宋體">”，說明測量過量程，請按</font></span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps14.jpg" width="25" /><strong><span style="font-family:宋體;"><font face="宋體">鍵，直至儀器顯示小于</font>25000<font face="宋體">數(shù)值。但是接線開路也會出現(xiàn)</font><font face="Calibri">25000</font><font face="宋體">的狀態(tài)，接線錯誤會出現(xiàn)全</font><font face="Calibri">0</font><font face="宋體">的狀態(tài)，請仔細分辨。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">為了提高測量精度，保證較高的分辨率，如讀數(shù)小于</font>1800<font face="宋體">個字，請按 “</font></span></strong><img height="14" src="file:///C:UsersADMINI~1AppDataLocalTempksohtml5552wps15.jpg" width="25" /><strong><span style="font-family:宋體;">”，鍵 <font face="Calibri">,</font><font face="宋體">如量程合適，示值應(yīng)在</font><font face="Calibri">1800</font><font face="宋體">—</font><font face="Calibri">25000</font><font face="宋體">之間。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">“量程<font face="Calibri">H</font><font face="宋體">”有</font><font face="Calibri">2.5m</font></span><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;"><font face="宋體">檔位，電流有</font>10A<font face="宋體">。“量程</font><font face="Calibri">L</font><font face="宋體">”有</font><font face="Calibri">2.5m</font></span></strong><strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;"><font face="宋體">檔位，電流僅</font>1A<font face="宋體">。請注意區(qū)別！</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">在使用</font>“量程<font face="Calibri">H</font><font face="宋體">”</font><font face="Calibri">2.5K</font></span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;">檔位時，應(yīng)在正向電流工作狀態(tài)時進行！</span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">注意！</span><u><span style="font-family:宋體;"><font face="宋體">在更換被測對象時，務(wù)必按</font>“復(fù)原”鍵，使儀器重新設(shè)定在“量程<font face="Calibri">H</font><font face="宋體">”</font></span></u></strong> <strong><u><span style="font-family:宋體;">2.5 K</span></u></strong><strong><u><span style="font-family:calibri;">Ω</span></u></strong><strong><u><span style="font-family:宋體;">檔位。</span></u><span style="font-family:宋體;">因為此檔位，小電流高電阻對被測對象不會造成損傷！</span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.3 <font face="宋體">零位校準。當儀器使用了一段時后，如發(fā)現(xiàn)“量程</font><font face="Calibri">L</font><font face="宋體">”的</font><font face="Calibri">2.5m</font></span><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;"><font face="宋體">和</font>250<font face="宋體">μ</font></span></strong><strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;"><font face="宋體">檔位時零位已超過</font>7<font face="宋體">個字，請自行校正。零位校準的方法如下：</font></span></strong></span></p><p style="margin-left:61.5500pt;text-indent:14.0500pt;"><span style="font-size:14px;"> <strong><span style="font-family:宋體;"><font face="宋體">設(shè)置</font>“量程<font face="Calibri">L</font><font face="宋體">”的</font><font face="Calibri">250</font><font face="宋體">μ</font></span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;"><font face="宋體">檔位，將電流換向按鈕置正向，不接負載，按下</font>P<font face="宋體">短接按鈕，等待</font><font face="Calibri">2</font><font face="宋體">分鐘再讀數(shù)。當顯示器零位大于</font><font face="Calibri">00007</font><font face="宋體">時或全為</font><font face="Calibri">00000</font><font face="宋體">時，用小型螺絲刀緩慢轉(zhuǎn)動</font></span></strong><strong><span style="font-family:calibri;">”</span></strong><strong><span style="font-family:宋體;">+</span></strong><strong><span style="font-family:calibri;">”</span></strong><strong><span style="font-family:宋體;">的左處電位器。順</span></strong><span style="font-family:宋體;">時</span></span></p><p style="margin-left:61.5500pt;text-indent:14.0000pt;"><span style="font-size:14px;"><span style="font-family:宋體;"><font face="宋體">時所測量導(dǎo)體和導(dǎo)針方向旋轉(zhuǎn)，零位數(shù)增大，逆時針方向旋轉(zhuǎn)，零位數(shù)減小。請注意，只有顯示器出現(xiàn)</font>00001~00002<font face="宋體">之間數(shù)值，才算校正成功。設(shè)置“量程</font><font face="Calibri">L</font><font face="宋體">”的</font><font face="Calibri">250</font><font face="宋體">μ</font></span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;"><font face="宋體">檔位，將電流換向按鈕置反向</font>,<font face="宋體">不接負載，按下</font><font face="Calibri">P</font><font face="宋體">短接按鈕，等待</font><font face="Calibri">2</font><font face="宋體">分鐘再讀數(shù)。當顯示器零位大于</font><font face="Calibri">00007</font><font face="宋體">時或全為</font><font face="Calibri">00000</font><font face="宋體">時，用小型螺絲刀緩慢轉(zhuǎn)動“</font><font face="Calibri">-</font><font face="宋體">”的左處電位器。順時針方向旋轉(zhuǎn)，零位數(shù)增大，逆時針方向旋轉(zhuǎn)，零位數(shù)減小。請注意，只有顯示器出現(xiàn)</font><font face="Calibri">00001~00002</font><font face="宋體">之間數(shù)值，才算校正成功。</font><font face="Calibri">(</font><font face="宋體">調(diào)零順序：必須先正向電流，后反向電流！</font><font face="Calibri">)</font><font face="宋體">松開</font><font face="Calibri">P</font><font face="宋體">短接按鈕，接上負載，進行測試。</font></span></span></p><p style="margin-left:61.5500pt;text-indent:28.0000pt;"><span style="font-size:14px;"><span style="font-family:宋體;"><font face="宋體">請注意：接上負載進行測試時，一旦按下</font>P<font face="宋體">短接按鈕時，流經(jīng)被測物體的電流就會被切斷。這樣可以緩解被測物體的發(fā)熱的現(xiàn)象。</font></span></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><span style="font-family:宋體;">其余量程一般不會產(chǎn)生零位超差現(xiàn)象，無需校正！</span></span></p><p style="margin-left:41.2000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><span style="font-family:宋體;">2.4<font face="宋體">在對電線電纜導(dǎo)體直流電阻測量時，如被測電阻小于</font><font face="Calibri">0.1</font></span><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;"><font face="宋體">，為了</font> <font face="宋體">抵消測量回路的熱電勢影響，請使用電流換向器。按下按鈕，此時按鈕燈亮，以示負向電流。松開按鈕，按鈕燈不亮，以示正向電流。將正向電流和負向電流測得的數(shù)值相加除以</font>2<font face="宋體">，將是終結(jié)果。</font></span></span></p><p style="margin-left:40.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><span style="font-family:宋體;">2.5<font face="宋體">溫度補償。只有在測量純銅和純鋁時，才能應(yīng)用溫度補償，否則會造成極DA的測量誤差！</font></span></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><span style="font-family:宋體;"> <font face="宋體">電流一旦流過導(dǎo)體，導(dǎo)體一定會發(fā)熱，尤其通過</font>1A~10A<font face="宋體">大電流。溫度補償勢在必行。本儀器具有這種溫度補償功能。先將量程轉(zhuǎn)換至所需的檔位，插上傳感器的插頭，接上被測對象，將傳感器貼附在測量對象表面，如圖五，傳感器的平面貼在被測對象表面，再用</font></span><strong><span style="font-family:宋體;"><font face="宋體">黑膠布將傳感器和被測對象裹緊。然后按下溫度補償鍵。稍待，此線的阻值是基準溫度</font>20</span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup><span style="font-family:宋體;">C<font face="宋體">的阻值。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><img alt="" src="https://img77.chem17.com/gxhpic_22d2937a21/3619961c043fc9589c17247195db5db55f1cbcafd1a09a731b4e076dfabcbc3b13a37f4796c961af.png" /> </span></p><p align="center" style="margin-left:61.5000pt;text-align:center;"><span style="font-size:14px;"><span style="font-family:宋體;">圖五</span></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">在進行溫度補償測量時，校正系數(shù)</font>K</span><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">T</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">值的理論計算是：導(dǎo)體表面溫度每變化</font>0.1</span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C<font face="宋體">，顯示器五位數(shù)的后一位將變化</font><font face="Calibri">4~5</font><font face="宋體">個字。測量結(jié)果，</font><font face="Calibri">K</font></span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">T</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">值將隨</font>R</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">X</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">（被測電阻）值的大小以乘積而變化，終顯示值是基準溫度</font>20</span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup><span style="font-family:宋體;">C<font face="宋體">時的阻值。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">當溫度臨界于</font>0.1</span><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup><span style="font-family:宋體;">C<font face="宋體">左右時，實測阻值將會在兩個數(shù)據(jù)之間翻動，實屬正?，F(xiàn)象，請稍等片刻，一旦溫度進入一個確定值，顯示值也會穩(wěn)定下來。如仍在翻動，我們可將兩個數(shù)值相加后除以</font><font face="Calibri">2</font><font face="宋體">。這個數(shù)值將是可靠的。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">如果被測導(dǎo)體的阻值較大，流經(jīng)的電流較小，或者被測導(dǎo)體精度要求不高，也可將傳感器懸掛在被測導(dǎo)體附近。此時按下溫度補償按鍵。稍等，顯示器顯示數(shù)值也是導(dǎo)體基準溫度</font>20</span><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C<font face="宋體">的阻值。但必須明確，此時的校正系數(shù)</font><font face="Calibri">K</font></span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">T</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">值是傳感器對環(huán)境溫度的測量結(jié)果，而不是對導(dǎo)體表面溫度的測試結(jié)果。終顯示值是</font>K</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">T</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">值與被測導(dǎo)體</font>R</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">X</span></span></sub><span style="font-family:宋體;">的乘積而已。</span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">被測電阻的材質(zhì)為純銅和純鋁時，溫度校正系數(shù)的公式</span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">K</span><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">T</span></span></sub><span style="font-family:宋體;">=1/[1+0.004(t-20)]=250/(230+t)</span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">其中：</font>t<font face="宋體">為被測試對象的表面溫度。儀器顯示值： </font><font face="Calibri">R</font></span><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">X</span></span></sub></strong><strong><span style="font-family:宋體;">=R</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">20</span></span></sub></strong><strong><span style="font-family:宋體;">=K</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">t</span></span></sub></strong><strong><span style="font-family:宋體;">*R</span><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">t</span></span></sub></strong></span></p><p style="margin-left:63.8000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;"><font face="宋體">傳感器的溫度分辨率為</font>0.1</span><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C<font face="宋體">，溫度補償范圍</font><font face="Calibri">0</font></span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C~100</span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C<font face="宋體">。其中</font></span></strong><strong><span style="font-family:宋體;">14</span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C~34</span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C的溫度誤差</span></strong><strong><span style="font-family:宋體;">0.6</span></strong><strong><sup><span style="vertical-align:super;"><span style="font-family:宋體;">0</span></span></sup></strong><strong><span style="font-family:宋體;">C。</span></strong></span></p><p style="margin-left:40.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.6<font face="宋體">注意事項</font></span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.6.1一旦發(fā)現(xiàn)儀器內(nèi)的風(fēng)扇不轉(zhuǎn)（不響）。請關(guān)機，再開機其仍不</span></strong></span></p><p><span style="font-size:14px;"><strong><span style="font-family:宋體;"> <font face="宋體">轉(zhuǎn)，請停用。聯(lián)系生產(chǎn)廠家。</font></span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.6.2 該儀器只能測量直體的導(dǎo)線、導(dǎo)體。千萬不能用來測試電力變壓器、電動機、發(fā)電機、線圈等。</span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.6.3 儀器在使用中，被測導(dǎo)線、導(dǎo)體、夾具等避免陽光直射和風(fēng)的吹動。儀器測量時，必須保持環(huán)境溫度的均衡。</span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.6.4用戶決不能擅自修理該儀器，否則生產(chǎn)廠家不負責(zé)修理該儀器。</span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.6.5 航空插座和插頭正確對接。如需拔出時，應(yīng)拿著插頭，而千萬不能拉線。</span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.6.6 儀器使用時，其通風(fēng)孔不能遮蓋。</span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.6.7 C</span><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">和</font>C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">2</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">的輸入導(dǎo)線的紫銅端片，小片各連接面板上的</font>C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">1</span></span></sub></strong><strong><span style="font-family:宋體;"><font face="宋體">和</font>C</span></strong><strong><sub><span style="vertical-align:sub;"><span style="font-family:宋體;">2</span></span></sub><span style="font-family:宋體;">的電流端口，大片則連接負載。</span></strong></span></p><p style="margin-left:61.5000pt;text-indent:0.0000pt;"><span style="font-size:14px;"> </span></p><ul style="list-style-type:square;"><li align="center" style="text-align:center;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">儀器的校正</span></strong></span></li></ul><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">為了保證產(chǎn)品的使用準確性，應(yīng)定期進行復(fù)校。儀器整機的復(fù)校應(yīng)一年一次，由專業(yè)人員進行。</span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">1.<font face="宋體">校正條件</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">1.1<font face="宋體">周圍環(huán)境溫度：</font><font face="Calibri">20</font><font face="宋體">℃±</font><font face="Calibri">2</font><font face="宋體">℃</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">1.2<font face="宋體">相對濕度：</font><font face="Calibri">35%</font><font face="宋體">～</font><font face="Calibri">80%</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">1.3<font face="宋體">交流電源：</font><font face="Calibri">220V</font><font face="宋體">±</font><font face="Calibri">5%</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">1.4<font face="宋體">空氣中不含腐蝕氣體和雜質(zhì)</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.<font face="宋體">校正設(shè)備</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.1 1K, 100</span><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;">, 10</span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;">, 1</span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;">, 0.1</span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;">, 0.01</span></strong><strong><span style="font-family:calibri;">Ω</span></strong><strong><span style="font-family:宋體;">, 0.001</span></strong><strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;"><font face="宋體">標準電阻各一只，精度為</font>0.01%<font face="宋體">。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.2 10</span><sup><span style="vertical-align:super;"><span style="font-family:宋體;">-4</span></span></sup></strong><strong><span style="font-family:calibri;">Ω</span><span style="font-family:宋體;"><font face="宋體">設(shè)備電阻一只，精度為</font>0.05%<font face="宋體">。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">2.3 <font face="宋體">直流標準電壓發(fā)生器</font><font face="Calibri">0~2V</font><font face="宋體">。精度為</font><font face="Calibri">0.05%</font><font face="宋體">。</font></span></strong></span></p><p style="margin-left:61.5000pt;"><span style="font-size:14px;"> </span></p><ul style="list-style-type:square;"><li align="center" style="text-align:center;"><span style="font-size:14px;"><strong><span style="font-family:宋體;">保用期</span></strong></span></li></ul><p style="margin-left:61.5000pt;"><span 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