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id="tueciplt7sn" class="about_con"> <div class="tueciplt7sn" id="rlt"><div id="tueciplt7sn" class="jqzoom"><a target="_blank" class="proimg"><img id=bigImg src="http://img68.afzhan.com/gxhpic_c10b8f16f0/1e2856c64806a22f21981bd8898ea4156414ba2db66ff279981df5bb4a6fdbb7ae43c46587c501d9.jpg" jqimg="http://img68.afzhan.com/gxhpic_c10b8f16f0/1e2856c64806a22f21981bd8898ea4156414ba2db66ff279981df5bb4a6fdbb7ae43c46587c501d9.jpg"></a></div></div> <div id="tueciplt7sn" class="rltproy"> <h1 class="proname">PC57直流電阻測(cè)量?jī)x</h1> <ul> <li>更新時(shí)間： 2024-03-11</li> <li>產(chǎn)品型號(hào)： <span></span></li> <li id="tueciplt7sn" class="proname2">簡(jiǎn)單描述</li> <li id="tueciplt7sn" class="desc">PC57直流電阻測(cè)量?jī)x是電線電纜導(dǎo)體直流電阻測(cè)量的儀表，儀表的技術(shù)性能應(yīng)能全面滿足GB/T3048.4導(dǎo)體直流電阻試驗(yàn) 中對(duì)測(cè)量設(shè)備的各項(xiàng)技術(shù)要求，本儀表創(chuàng)新開發(fā)了多項(xiàng)新技術(shù)并已獲得了國(guó)家，測(cè)量快速、準(zhǔn)確、讀數(shù)穩(wěn)定、使用方便。是QJ57等雙臂電橋的更新?lián)Q代產(chǎn)品，與同類的數(shù)字式微歐計(jì)相比，</li> <div id="tueciplt7sn" 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class="proshowParameter"> <table style=" margin-bottom:20px;"> <tbody> <tr><th>品牌</th><td>康登電氣</td> <th></th><td></td></tr> </tbody> </table> </section><p> </p><p> </p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">PC</span><span style="font-family:times new roman; font-size:12px">57</span><span style="font-family:幼圓; font-size:12px">直流電阻測(cè)量?jī)x是電線電纜導(dǎo)體直流電阻測(cè)量的儀表，儀表的技術(shù)性能應(yīng)能全面滿足</span><strong><span style="font-family:幼圓; font-size:12px">GB/T3048.4導(dǎo)體直流電阻試驗(yàn) </span></strong><span style="font-family:幼圓; font-size:12px">中對(duì)測(cè)量設(shè)備的各項(xiàng)技術(shù)要求，本儀表創(chuàng)新開發(fā)了多項(xiàng)新技術(shù)并</span><strong><span style="font-family:幼圓; font-size:12px">已獲得了國(guó)家</span></strong><span style="font-family:幼圓; font-size:12px">，測(cè)量快速、準(zhǔn)確、讀數(shù)穩(wěn)定、使用方便。是QJ57等雙臂電橋的更新?lián)Q代產(chǎn)品，與同類的數(shù)字式微歐計(jì)相比，本儀表有以下特點(diǎn)：</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"><img alt="" src="https://img72.afzhan.com/gxhpic_c10b8f16f0/73c1482f3b90472aaa57ad8cc349771fda863abe3f7797aa5b665db39fcf829c426f4bd0b8a8b8a9.jpg" style="height:552px; margin:0px; width:800px" /></span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">1.1 </span><strong><span style="font-family:幼圓; font-size:12px">高靈敏度與高分辨力</span></strong><span style="font-family:幼圓; font-size:12px">。本儀表2mΩ檔，該量程的分辨力為0. 1μΩ（10</span><sup><span style="font-family:幼圓; font-size:12px">-7</span></sup><span style="font-family:幼圓; font-size:12px">Ω），比現(xiàn)有的zui大測(cè)量電流為1A的數(shù)字式微歐計(jì)的zui高分辨力提高了10倍。本儀器采用技術(shù)特制了高靈敏、低噪聲的納伏放大器，其電壓靈敏度為100</span><span style="font-family:times new roman; font-size:12px">nV (0.1</span><span style="font-family:幼圓; font-size:12px">μ</span><span style="font-family:times new roman; font-size:12px">V)</span><span style="font-family:幼圓; font-size:12px">，測(cè)100</span><span style="font-family:times new roman; font-size:12px">mm</span><sup><span style="font-family:times new roman; font-size:12px">2</span></sup><span style="font-family:幼圓; font-size:12px">截面1米銅線，保證有4位有效讀數(shù)，特別適用于較大截面導(dǎo)線與超小截面微細(xì)導(dǎo)線的測(cè)量。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">1.2</span><strong><span style="font-family:幼圓; font-size:12px">多電流測(cè)量功能</span></strong><span style="font-family:幼圓; font-size:12px">。本儀器的各個(gè)量程設(shè)置了不同的測(cè)量電流可供選擇，并在儀表面板上標(biāo)明。該性能克服了目前數(shù)字表及某些電橋（如QJ57）測(cè)量電流不能調(diào)節(jié)，而且在某些檔位電流偏大引起被測(cè)導(dǎo)體發(fā)熱的缺陷。為了實(shí)現(xiàn)多電流測(cè)量，儀表采用了創(chuàng)新的數(shù)字比例式測(cè)量電路，其工作原理與電橋相仿。與目前數(shù)字式微歐計(jì)常用的恒流源</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">電壓表方式不同，本儀表讀數(shù)的zui終表達(dá)式與測(cè)量電流無(wú)關(guān)，大大降低了對(duì)恒流源的精度要求，同時(shí)提高了儀表測(cè)量的準(zhǔn)確度和穩(wěn)定性。</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:times new roman; font-size:12px">1.3</span></strong><strong><span style="font-family:幼圓; font-size:12px">反向電流測(cè)量功能</span></strong><span style="font-family:幼圓; font-size:12px">。根據(jù)GB/T 3048.5第5.5條規(guī)定，當(dāng)試樣電阻小于0.1Ω時(shí)，應(yīng)將電流反向再測(cè)一次，然后取算術(shù)平均值。在電橋法中，該功能是通過(guò)切換外部換向閘刀實(shí)現(xiàn)的，而通常數(shù)字式微歐計(jì)是不容許電流反向的，無(wú)法實(shí)現(xiàn)標(biāo)準(zhǔn)要求的操作。本儀器中采用特殊設(shè)計(jì)的雙向電流保護(hù)電路(技術(shù))，允許進(jìn)行反向電流測(cè)量，通過(guò)面板開關(guān)實(shí)施電流換向操作，操作簡(jiǎn)捷、使用方便。</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:times new roman; font-size:12px">1.4 </span></strong><strong><span style="font-family:幼圓; font-size:12px">交直流兩用，使用方便。</span></strong><span style="font-family:幼圓; font-size:12px">本儀器（PC57）為便攜式結(jié)構(gòu)，在車間現(xiàn)場(chǎng)或野外測(cè)量成盤電纜時(shí)，可用機(jī)內(nèi)電池供電，不用接電源線，操作特別方便；在試驗(yàn)室等固定場(chǎng)合，則可使用外接電源，用交流電源供電，減少電池消耗。</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px">1.5性能價(jià)格比高，適用范圍廣 </span></strong><span style="font-family:幼圓; font-size:12px"> 本儀器在實(shí)現(xiàn)上述多功能及高性能的同時(shí), 其價(jià)格僅為相同技術(shù)指標(biāo)（0. 1μΩ分辨力，0.05級(jí)測(cè)量準(zhǔn)確度）的同類數(shù)字式低阻計(jì)的幾分之一, 是目前市場(chǎng)上的低阻測(cè)量?jī)x表，特別適合中、小電線電纜廠、漆包線生產(chǎn)廠用于導(dǎo)體電阻試驗(yàn)，作為QJ23、QJ44、QJ57等各種電橋的更新?lián)Q代產(chǎn)品，本儀器同時(shí)適用于電力部門快速測(cè)量大型變壓器、發(fā)電機(jī)、電動(dòng)機(jī)的直流電阻，開關(guān)接觸電阻，精密測(cè)量、檢定各類分流器。</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px"> 1</span></strong></span></p><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px"> 2基本參數(shù) </span></strong></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">儀表的基本參數(shù)見(jiàn)表1</span></span></p><p><span style="font-size:16px"> <strong><span style="font-family:幼圓; font-size:12px">表1 基本參數(shù)</span></strong></span></p><table style="border-collapse:collapse; border-spacing:0px; color:rgb(71, 71, 71); font-family:微軟雅黑,arial,helvetica,sans-serif; font-size:12px; margin-left:-3.6pt; width:677px"><tbody><tr><td rowspan="2" style="vertical-align:top; width:117px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 參數(shù)名稱</span></span></p></td><td colspan="2" style="vertical-align:top; width:560px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 型號(hào)</span></span></p></td></tr><tr><td style="vertical-align:top; width:291px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> <span style="color:rgb(255, 0, 0)"><strong> PC57</strong></span></span></span></p></td><td style="vertical-align:top; width:269px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> <span style="color:rgb(255, 0, 0)"> PC57A</span></span></span></p></td></tr><tr><td style="vertical-align:top; width:117px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 測(cè)量范圍</span></span></p></td><td colspan="2" style="vertical-align:top; width:560px"><p><span style="font-size:16px"> <span style="color:rgb(255, 0, 0); font-size:12px"><strong> <span style="color:rgb(102, 102, 102); font-family:times new roman">0. 1</span><span style="color:rgb(102, 102, 102); font-family:幼圓">μΩ</span><span style="color:rgb(102, 102, 102); font-family:times new roman">-1999.9</span><span style="color:rgb(102, 102, 102); font-family:幼圓">Ω</span></strong></span></span></p></td></tr><tr><td style="vertical-align:top; width:117px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 額定測(cè)量電流</span></span></p></td><td colspan="2" style="vertical-align:top; width:560px"><p><span style="font-size:16px"> <span style="color:rgb(255, 160, 122); font-size:12px"><span style="color:rgb(102, 102, 102); font-family:幼圓"> <strong> 0.1</strong></span><span style="color:rgb(102, 102, 102); font-family:times new roman"><strong>mA-1A </strong> </span></span></span></p></td></tr><tr><td style="vertical-align:top; width:117px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 雙向電流測(cè)量</span></span></p></td><td colspan="2" style="vertical-align:top; width:560px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 內(nèi)附電流換向裝置，可進(jìn)行正、反向電流測(cè)量</span></span></p></td></tr><tr><td style="vertical-align:top; width:117px"><p><span style="font-size:16px"> <span style="font-family:幼圓; font-size:12px"> 顯示</span></span></p></td><td colspan="2" style="vertical-align:top; width:560px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> <span style="color:rgb(255, 0, 0)"><strong> 4 1/2 位數(shù)字顯示，字高3</strong></span></span><span style="color:rgb(255, 0, 0); font-size:12px"><strong><span style="color:rgb(102, 102, 102); font-family:times new roman">5mm，</span><span style="color:rgb(102, 102, 102); font-family:幼圓">量程顯示，單位顯示，帶背光</span></strong></span></span></p></td></tr><tr><td style="vertical-align:top; width:117px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 準(zhǔn)確度等級(jí)</span></span></p></td><td colspan="2" style="vertical-align:top; width:560px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> <strong><span style="color:rgb(255, 0, 0)">0.05級(jí)、0.1級(jí)</span></strong></span></span></p></td></tr><tr><td style="vertical-align:top; width:117px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 電源</span></span></p></td><td style="vertical-align:top; width:291px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 1號(hào)電池8節(jié)或AC220V（外接電源）</span></span></p></td><td style="vertical-align:top; width:269px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> AC220V</span></span></p></td></tr><tr><td style="vertical-align:top; width:117px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> zui大功耗</span></span></p></td><td style="vertical-align:top; width:291px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> <strong><span style="color:rgb(255, 0, 0)"> DC：12V 300mA；AC：5VA</span></strong></span></span></p></td><td style="vertical-align:top; width:269px"><p><span style="font-size:16px"><strong><span style="color:rgb(255, 0, 0); font-size:12px"><span style="color:rgb(102, 102, 102); font-family:幼圓"> 7VA</span></span></strong></span></p></td></tr><tr><td style="vertical-align:top; width:117px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 體積、重量</span></span></p></td><td style="vertical-align:top; width:291px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> <span style="color:rgb(255, 0, 0)"><strong> 270×115×250mm（W×H×D）；2.5kg</strong></span></span></span></p></td><td style="vertical-align:top; width:269px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 面板安裝式儀表，用戶尺寸</span></span></p></td></tr></tbody></table><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px">3技術(shù)要求 </span></strong></span></p><ul><li><span style="color:rgb(102, 102, 102); font-size:16px"><span style="font-family:幼圓; font-size:12px"> 儀器使用環(huán)境條件 </span></span></li></ul><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.1.1 環(huán)境溫度: a）標(biāo)稱工作溫度：15-25℃</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> b）正常工作溫度：5-35℃</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.1.2 相對(duì)濕度不大于85%</span> <span style="font-family:幼圓; font-size:12px">RH</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.1.3 電源: DC：8.5</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">12.5V</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> AC: 220V±10%, 50H</span><span style="font-family:times new roman; font-size:12px">z</span><span style="font-family:幼圓; font-size:12px">±2H</span><span style="font-family:times new roman; font-size:12px">z</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.1.4 除地磁場(chǎng)外，無(wú)電脈沖電火花等電磁場(chǎng)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.2 基本誤差</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 在標(biāo)稱溫度（15-25℃）下，儀表各量程的基本誤差見(jiàn)表2</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px"> 表2 基本誤差</span></strong></span></p><table style="border-collapse:collapse; border-spacing:0px; color:rgb(71, 71, 71); font-family:微軟雅黑,arial,helvetica,sans-serif; font-size:12px; margin-left:-3.6pt; width:672px"><tbody><tr><td style="vertical-align:top; width:222px"><p><span style="font-size:16px"> <span style="font-family:幼圓; font-size:12px"> 量程</span></span></p></td><td style="vertical-align:top; width:450px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 基本誤差</span></span></p></td></tr><tr><td style="vertical-align:top; width:222px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> <strong><span style="color:rgb(255, 0, 0)"> 2</span></strong></span><strong><span style="color:rgb(255, 0, 0); font-size:12px"><span style="color:rgb(102, 102, 102); font-family:times new roman">m</span><span style="color:rgb(102, 102, 102); font-family:幼圓">Ω-20</span><span style="color:rgb(102, 102, 102); font-family:times new roman">m</span><span style="color:rgb(102, 102, 102); font-family:幼圓">Ω</span></span></strong></span></p></td><td style="vertical-align:top; width:450px"><p><span style="font-size:16px"><strong><span style="color:rgb(255, 0, 0); font-size:12px"> <span style="color:rgb(102, 102, 102); font-family:幼圓"> ±(0.0</span><span style="color:rgb(102, 102, 102); font-family:times new roman">8</span><span style="color:rgb(102, 102, 102); font-family:幼圓">%</span><span style="color:rgb(102, 102, 102); font-family:times new roman">R</span><sub><span style="color:rgb(102, 102, 102); font-family:times new roman; font-size:12px">X</span></sub><span style="color:rgb(102, 102, 102); font-family:times new roman">+0.02</span><span style="color:rgb(102, 102, 102); font-family:幼圓">%</span><span style="color:rgb(102, 102, 102); font-family:times new roman">R</span><sub><span style="color:rgb(102, 102, 102); font-family:times new roman; font-size:12px">m</span></sub><span style="color:rgb(102, 102, 102); font-family:幼圓">)</span></span></strong></span></p></td></tr><tr><td style="vertical-align:top; width:222px"><p><span style="font-size:16px"><strong><span style="color:rgb(255, 0, 0); font-size:12px"><span style="color:rgb(102, 102, 102); font-family:幼圓"> 200</span><span style="color:rgb(102, 102, 102); font-family:times new roman">m</span><span style="color:rgb(102, 102, 102); font-family:幼圓">Ω-2000Ω</span></span></strong></span></p></td><td style="vertical-align:top; width:450px"><p><span style="font-size:16px"><strong><span style="color:rgb(255, 0, 0); font-size:12px"> <span style="color:rgb(102, 102, 102); font-family:幼圓">±(0.04%</span><span style="color:rgb(102, 102, 102); font-family:times new roman">R</span><sub><span style="color:rgb(102, 102, 102); font-family:times new roman; font-size:12px">X</span></sub><span style="color:rgb(102, 102, 102); font-family:times new roman">+0.0</span><span style="color:rgb(102, 102, 102); font-family:幼圓">1%</span><span style="color:rgb(102, 102, 102); font-family:times new roman">R</span><sub><span style="color:rgb(102, 102, 102); font-family:times new roman; font-size:12px">m</span></sub></span></strong><span style="font-family:幼圓; font-size:12px">)</span></span></p></td></tr></tbody></table><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">其中</span><span style="font-family:times new roman; font-size:12px">R</span><sub><span style="font-family:times new roman; font-size:12px">X</span></sub><span style="font-family:幼圓; font-size:12px">：儀表讀數(shù)值（電阻示值）</span> <span style="font-family:times new roman; font-size:12px">R</span><sub><span style="font-family:times new roman; font-size:12px">m</span></sub><span style="font-family:幼圓; font-size:12px">：所測(cè)量程滿度值</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.3 準(zhǔn)確度等級(jí)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 在標(biāo)稱溫度（15-25℃）下，儀表各量程的準(zhǔn)確度等級(jí)及zui大允許誤差見(jiàn)表3</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">當(dāng)環(huán)境溫度為0-40℃范圍時(shí),儀表的準(zhǔn)確度降低一個(gè)等級(jí)。</span> </span></p><p><span style="font-size:16px"> </span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 2</span> </span></p><p><span style="font-size:16px"> <strong><span style="font-family:幼圓; font-size:12px">表3 準(zhǔn)確度等級(jí)與zui大允許誤差</span></strong></span></p><table style="border-collapse:collapse; border-spacing:0px; color:rgb(71, 71, 71); font-family:微軟雅黑,arial,helvetica,sans-serif; font-size:12px; margin-left:23.4pt; width:624px"><tbody><tr><td style="vertical-align:top; width:180px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 量程</span></span></p></td><td style="vertical-align:top; width:216px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 準(zhǔn)確度等級(jí)</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> zui大允許誤差</span></span></p></td></tr><tr><td style="vertical-align:top; width:180px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 2</span><span style="font-family:times new roman; font-size:12px">m</span><span style="font-family:幼圓; font-size:12px">Ω-20</span><span style="font-family:times new roman; font-size:12px">m</span><span style="font-family:幼圓; font-size:12px">Ω</span></span></p></td><td style="vertical-align:top; width:216px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">0.</span><span style="font-family:幼圓; font-size:12px">1</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"> <span style="font-family:幼圓; font-size:12px">±0.1%</span></span></p></td></tr><tr><td style="vertical-align:top; width:180px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 200</span><span style="font-family:times new roman; font-size:12px">m</span><span style="font-family:幼圓; font-size:12px">Ω-2000Ω</span></span></p></td><td style="vertical-align:top; width:216px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">0.</span><span style="font-family:幼圓; font-size:12px">05</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"> <span style="font-family:幼圓; font-size:12px">±0.05%</span></span></p></td></tr></tbody></table><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.4 額定電流</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 儀表各測(cè)量檔位的額定電流標(biāo)稱值見(jiàn)表4。</span></span></p><p><span style="font-size:16px"> <strong><span style="font-family:幼圓; font-size:12px"> 表4 額定電流標(biāo)稱值</span></strong></span></p><table style="border-collapse:collapse; border-spacing:0px; color:rgb(71, 71, 71); font-family:微軟雅黑,arial,helvetica,sans-serif; font-size:12px; margin-left:22.9pt; width:625px"><tbody><tr><td rowspan="2" style="vertical-align:top; width:190px"><p><span style="font-size:16px"> </span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 量程</span></span></p></td><td colspan="2" style="vertical-align:top; width:435px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 測(cè)量狀態(tài)</span></span></p></td></tr><tr><td style="vertical-align:top; width:207px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 常規(guī)電流（THI）</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 低電流（TLO）</span></span></p></td></tr><tr><td style="vertical-align:top; width:190px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 2</span><span style="font-family:times new roman; font-size:12px">m</span><span style="font-family:幼圓; font-size:12px">Ω</span></span></p></td><td style="vertical-align:top; width:207px"><p><span style="font-size:16px"> <strong><span style="font-family:幼圓; font-size:12px">————</span></strong> </span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 1A</span></span></p></td></tr><tr><td style="vertical-align:top; width:190px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 20</span><span style="font-family:times new roman; font-size:12px">m</span><span style="font-family:幼圓; font-size:12px">Ω</span></span></p></td><td style="vertical-align:top; width:207px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 1A</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"> <strong><span style="font-family:幼圓; font-size:12px">————</span></strong> </span></p></td></tr><tr><td style="vertical-align:top; width:190px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 200</span><span style="font-family:times new roman; font-size:12px">m</span><span style="font-family:幼圓; font-size:12px">Ω</span></span></p></td><td style="vertical-align:top; width:207px"><p><span style="font-size:16px"> <strong><span style="font-family:幼圓; font-size:12px">————</span></strong> </span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">100mA</span> </span></p></td></tr><tr><td style="vertical-align:top; width:190px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 2Ω</span></span></p></td><td style="vertical-align:top; width:207px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">100mA</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">10mA</span></span></p></td></tr><tr><td style="vertical-align:top; width:190px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 20Ω</span></span></p></td><td style="vertical-align:top; width:207px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">10mA</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">1mA</span></span></p></td></tr><tr><td style="vertical-align:top; width:190px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 200Ω</span></span></p></td><td style="vertical-align:top; width:207px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">1mA</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">100</span><span style="font-family:幼圓; font-size:12px">μ</span><span style="font-family:times new roman; font-size:12px">A</span></span></p></td></tr><tr><td style="vertical-align:top; width:190px"><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 2000Ω</span></span></p></td><td style="vertical-align:top; width:207px"><p><span style="font-size:16px"> <span style="font-family:times new roman; font-size:12px">100</span><span style="font-family:幼圓; font-size:12px">μ</span><span style="font-family:times new roman; font-size:12px">A</span></span></p></td><td style="vertical-align:top; width:228px"><p><span style="font-size:16px"> <strong><span style="font-family:幼圓; font-size:12px">————</span></strong></span></p></td></tr></tbody></table><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.5雙向電流測(cè)量</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">在消除了測(cè)量回路的熱電勢(shì)偏差后，儀表在正向電流下的測(cè)量結(jié)果與反向電流下的測(cè)量結(jié)果的相差值，不超過(guò)儀表基本誤差的1/2。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.6 電池低電壓指示 (僅PC57)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 當(dāng)電池電壓低于8.5±0.3V時(shí), 儀表面板上的電池低電壓告警紅色指示燈亮，提示用戶更換電池或改用外接電源操作，此時(shí)儀表仍為正常工作狀態(tài)，測(cè)量結(jié)果有效。如果繼續(xù)使用機(jī)內(nèi)電池，當(dāng)電池電壓低于儀表正常工作范圍時(shí)，儀表顯示屏上的背光照明自動(dòng)熄滅，此時(shí)，測(cè)量結(jié)果無(wú)效。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.6 絕緣電阻</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">交流電源輸入端與機(jī)殼接地端及儀表測(cè)量端之間的絕緣電阻應(yīng)不小于</span><span style="font-family:times new roman; font-size:12px">3</span><span style="font-family:幼圓; font-size:12px">0MΩ。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">3.7 工頻耐壓</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">交流電源輸入端與機(jī)殼接地端及儀表測(cè)量端之間應(yīng)承受45H</span><span style="font-family:times new roman; font-size:12px">z</span><span style="font-family:幼圓; font-size:12px">-65H</span><span style="font-family:times new roman; font-size:12px">z</span><span style="font-family:幼圓; font-size:12px">任意頻率下，實(shí)際正弦交流電壓1.5</span><span style="font-family:times new roman; font-size:12px">kV</span><span style="font-family:幼圓; font-size:12px">歷時(shí)1</span><span style="font-family:times new roman; font-size:12px">min</span><span style="font-family:幼圓; font-size:12px">試驗(yàn)，無(wú)擊穿或飛弧現(xiàn)象。</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px">4 使用方法及注意事項(xiàng) </span></strong></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 3</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.1面板功能介紹</span></span></p><p><span style="font-size:16px"><img alt="" src="https://img72.afzhan.com/gxhpic_c10b8f16f0/73c1482f3b90472aaa57ad8cc349771fb8b52d18e137b1798159b8d83806ac2f3f09e083a7cc44f9.png" style="height:260px; margin:0px; width:420px" /></span></p><p><span style="font-size:16px"> </span></p><p style="text-align:center"><span style="font-size:16px"> </span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">其中</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（1）─液晶顯示屏</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（2）─量程選擇開關(guān)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（3）─校零、平衡旋鈕 </span> </span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（4）─外接電源插口（僅PC57）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（5）─電源開關(guān)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（6）─電池低電壓告警指示燈（僅PC57）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（7）─讀數(shù)保持開關(guān)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（8）─測(cè)量電流正、反向選擇開關(guān)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（9）─校零、平衡、測(cè)量選擇開關(guān)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（10）─電流輸出C1端（接測(cè)量導(dǎo)線：紅色粗線）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（11）─電壓輸入P1端（接測(cè)量導(dǎo)線：紅色細(xì)線）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（</span><span style="font-family:times new roman; font-size:12px">1</span><span style="font-family:幼圓; font-size:12px">2）─電壓輸入P2端（接測(cè)量導(dǎo)線：黑色細(xì)線）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">（</span><span style="font-family:times new roman; font-size:12px">1</span><span style="font-family:幼圓; font-size:12px">3）─電流輸出C2端（接測(cè)量導(dǎo)線：黑色粗線）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.2 電阻測(cè)量步驟</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.2.1 電源選擇（僅PC57）直流電源：打開電池盒蓋板（儀器后面板），按電池盒蓋板指示的極性裝入電壓為1.2</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">1.5V, R20（1號(hào)）電池8節(jié)，推薦優(yōu)先使用電池品種順序依次為：可充電鎳氫電池，高性能堿性電池，鐵殼普通電池。如使用紙殼電池，則應(yīng)充分注意電池狀況，以免電池漏夜腐蝕儀器。交流電源：將儀器所附的外接電源的低壓輸出插頭插入儀器的外接電源插口（4），然后將高壓端插入220V電源。外接電源低壓輸出插頭的前端（球面）為正極，后端為負(fù)極。 </span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 4</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.2.2儀器預(yù)熱及內(nèi)部校零：將校零、平衡、測(cè)量選擇開關(guān)(9)撥至“校零”位置， </span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">打開電源開關(guān)（5），通電預(yù)熱3分鐘后，調(diào)節(jié)校零、平衡旋鈕（3），使儀器示值</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">為0000。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.2</span><span style="font-family:times new roman; font-size:12px">.</span><span style="font-family:幼圓; font-size:12px">3按C1、P1、P2、C2的順序連接被測(cè)器件，電流端在外側(cè)、電壓端在內(nèi)側(cè)，</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">紅色粗線為C1、細(xì)線為P1；黑色粗線為C2、細(xì)線為P2。由于本儀器具有*的測(cè)量靈敏度，在連接P1、P2端時(shí)應(yīng)盡量避免人體接觸，以免人體加熱電壓結(jié)點(diǎn)，引起熱電偶效應(yīng)，由此產(chǎn)生的熱電勢(shì)將會(huì)對(duì)電阻的測(cè)量造成影響。</span></span></p><p><span style="font-size:16px"><span style="font-family:times new roman; font-size:12px">1m</span><span style="font-family:幼圓; font-size:12px">長(zhǎng)度的導(dǎo)體電阻測(cè)量必須與的導(dǎo)體電阻測(cè)量夾具配合使用，Φ8mm以下電線可選用DQ-150型導(dǎo)體電阻測(cè)量夾具，Φ20mm以下電纜可選用DQ-240型，Φ1mm以上至Φ38mm電纜可選用DQ-630型，鉗口端接C1、C2，刀口端接P1、P2。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">成盤電纜直流電阻測(cè)量必須與的導(dǎo)體直流電阻測(cè)試鉗配合使用，Φ32mm以下電纜可選用本廠特制的中型導(dǎo)體電阻測(cè)試鉗，Φ41mm以下電纜可選用本廠特制的大型導(dǎo)體電阻測(cè)試鉗，對(duì)于通常的測(cè)試要求，使用一對(duì)（紅、黑）測(cè)試鉗即可，紅鉗與黑鉗分別夾在被測(cè)電纜兩端，紅鉗的兩根紅線分別接C1、P1，黑鉗的兩根黑線分別接C2、P2。如果對(duì)測(cè)量準(zhǔn)確度要求很高或被測(cè)電纜直徑很大時(shí)（譬如大型電纜成品交割時(shí)，雙方對(duì)直流電阻指標(biāo)是否合格有爭(zhēng)議而進(jìn)行的仲裁試驗(yàn)），可采用兩對(duì)導(dǎo)體電阻測(cè)試鉗，以消除電流端與電壓端距離過(guò)近造成測(cè)量結(jié)果可能偏大的影響。兩個(gè)紅鉗夾在被測(cè)電纜的一端，兩個(gè)鉗子之間的距離應(yīng)不小于被測(cè)導(dǎo)體周長(zhǎng)的1.5倍，外側(cè)紅鉗的兩根紅線并聯(lián)接C1端，內(nèi)側(cè)紅鉗的兩根紅線并聯(lián)接P1端；兩個(gè)黑鉗夾在被測(cè)電纜的另一端，外側(cè)黑鉗的兩根黑線并聯(lián)接C2端，內(nèi)側(cè)黑鉗的兩根黑線并聯(lián)接P2端。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.2.4 根據(jù)被測(cè)器件的性質(zhì)及電阻值范圍，選擇合適的測(cè)量檔位，儀表在同一量程設(shè)有不同測(cè)量電流可供選擇，較大的測(cè)量電流具有抗干擾性能好的特點(diǎn)，此時(shí)顯示屏上出現(xiàn)“THI”字符；較低的測(cè)量電流對(duì)導(dǎo)體的加熱效應(yīng)小，適用于微細(xì)導(dǎo)線的測(cè)量，此時(shí)顯示屏上出現(xiàn)“TLO”字符。如果不能估計(jì)被測(cè)器件的電阻值范圍，則應(yīng)先選取較高的電阻量程及較小的測(cè)量電流，防止被測(cè)器件受到大電流沖擊。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.2.5 測(cè)量回路電勢(shì)平衡：將開關(guān)（9）由“校零”位撥至“平衡”位置（中間位）時(shí)，顯示屏上可能會(huì)出現(xiàn)數(shù)值，表示測(cè)量回路中存在不平衡的接觸電勢(shì)或熱電勢(shì)，再次調(diào)節(jié)調(diào)節(jié)校零、平衡旋鈕（3），使儀器示值在0000與-0000之間，可以抵消外部電勢(shì)對(duì)電阻測(cè)量的影響。應(yīng)該注意：測(cè)量回路中的不平衡電勢(shì)往往是由于連接過(guò)程中人體加熱電壓結(jié)點(diǎn)所致，它是一個(gè)不穩(wěn)定的數(shù)值，將隨著溫度平衡而緩慢消退，如顯示屏上的讀數(shù)較大，測(cè)量者應(yīng)靜待片刻，等到顯示屏上的讀數(shù)降至5</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 5</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">個(gè)字以下，再進(jìn)行調(diào)節(jié)平衡的操作，如果儀表在“平衡”位置上讀數(shù)不穩(wěn)或不能調(diào)至零位，請(qǐng)重點(diǎn)檢查P1、P2電位端是否接妥。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.2.6 電阻值測(cè)量：將開關(guān)（9）由“平衡”撥至“測(cè)量”位置，測(cè)量電流通過(guò)被測(cè)器件，顯示屏上出現(xiàn)的數(shù)值即為被測(cè)電阻值。如果顯示屏出現(xiàn)“1</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">”說(shuō)明測(cè)量欠量程，應(yīng)將量程開關(guān)（2）順時(shí)針旋轉(zhuǎn)，直至儀器出現(xiàn)示值；如讀數(shù)小于1800個(gè)字，說(shuō)明測(cè)量過(guò)量程，應(yīng)逆時(shí)針旋轉(zhuǎn)量程開關(guān)，以保證測(cè)量具有較高的分辨力。如量程合適，儀器示值應(yīng)在1800</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">19999之間。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.3 讀數(shù)保持：將讀數(shù)保持開關(guān)（7）撥至“保持”位置，顯示屏上出現(xiàn)“H”</span> <span style="font-family:幼圓; font-size:12px">字符，儀器示值鎖定，方便用戶記錄數(shù)據(jù)，如要連續(xù)測(cè)量，讀數(shù)保持開關(guān)應(yīng)置于“測(cè)量”位置。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">4.4反向電流下的電阻測(cè)量：電線電纜導(dǎo)體直流電阻測(cè)量，如被測(cè)電阻小于0.1Ω，按國(guó)家標(biāo)準(zhǔn)的規(guī)定應(yīng)進(jìn)行反向電流下的電阻測(cè)量，以進(jìn)一步抵消測(cè)量回路熱電勢(shì)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">影響。將測(cè)量電流正、反向選擇開關(guān)（8）撥至“反向</span><span style="font-family:times new roman; font-size:12px">”</span><span style="font-family:幼圓; font-size:12px">（反向電流）位置，顯示</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">屏上電阻值的前面將出現(xiàn)負(fù)號(hào)，表示該數(shù)值是在反向電流下測(cè)得的數(shù)據(jù)，將這個(gè)</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">數(shù)據(jù)的值與“正向</span><span style="font-family:times new roman; font-size:12px">”</span><span style="font-family:幼圓; font-size:12px">（正向電流）下測(cè)得的數(shù)據(jù)相加后除以2，作為zui終的測(cè)量結(jié)果，與單向電流下的測(cè)量的結(jié)果相比，該數(shù)值具有更高的準(zhǔn)確度與可靠性。</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px">5 注意事項(xiàng)</span></strong></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">5.1 本儀表是電線電纜導(dǎo)體電阻試驗(yàn)設(shè)備，采用了很多新技術(shù)，具有一些電橋及其他數(shù)字式低阻表所不具備的性能和特點(diǎn)，為了能夠安全、正確地操作本儀表，使得測(cè)量工作順利進(jìn)行，</span><strong><span style="font-family:幼圓; font-size:12px">用戶在使用前務(wù)必仔細(xì)閱讀本使用說(shuō)明書</span></strong><span style="font-family:幼圓; font-size:12px">。</span></span></p><ul><li><span style="color:rgb(102, 102, 102); font-size:16px"><span style="font-family:幼圓; font-size:12px">在進(jìn)行電線電纜導(dǎo)體直流電阻測(cè)量時(shí), 必須盡可能保證環(huán)境溫度在15-25℃范</span></span></li></ul><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">圍內(nèi)，儀表保證表3所示的測(cè)量準(zhǔn)確度，在5-35℃環(huán)境溫度下，儀表可以正常工作，但測(cè)量準(zhǔn)確度降低一個(gè)等級(jí)。由于被測(cè)銅、鋁導(dǎo)線具有很高的溫度系數(shù)，在測(cè)量時(shí)應(yīng)嚴(yán)格保持室內(nèi)溫度的均勻與恒定，避免陽(yáng)光直照或空調(diào)風(fēng)直吹，室溫調(diào)節(jié)推薦采用中央空調(diào)或變頻式空調(diào)，zui大限度減少室內(nèi)溫度的波動(dòng)。測(cè)溫器件應(yīng)采用分辨力不低于0.1℃的精密溫度計(jì)，并安裝在盡可能靠近被測(cè)導(dǎo)體的位置上。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">5.3 </span><strong><span style="font-family:幼圓; font-size:12px">在C1、C2、P1、P2端懸空時(shí)，開關(guān)（9）必須置于“校零”檔位，測(cè)量結(jié)束時(shí)應(yīng)先將開關(guān)(6)撥至“校零”位置，斷開測(cè)量電流，然后斷開被測(cè)器件，應(yīng)避免在大電流測(cè)量狀態(tài)下將負(fù)載開路，儀表不用時(shí)也請(qǐng)將開關(guān)(9)撥至“校零”位置。</span></strong></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">5.4 在使用電池供電時(shí), 如出現(xiàn)顯示屏背光突然熄滅的情況（較易出現(xiàn)在測(cè)量電流為1A的情況下），說(shuō)明電池電壓過(guò)低，必須更換電池或改用外接電源供電。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">5.5 儀器使用時(shí)，其通風(fēng)孔及外接電源不得遮蓋，以保證散熱良好。測(cè)試場(chǎng)合必須避開干擾源，如手電鉆、電焊機(jī)、大功率接觸器等。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 6</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">5.6 儀器不用時(shí)，應(yīng)存放在通風(fēng)、干燥的環(huán)境下，避免嚴(yán)寒與高溫。</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px">6 執(zhí)行標(biāo)準(zhǔn)及制造保證</span></strong></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">6.1 本儀表執(zhí)行標(biāo)準(zhǔn)為上海市企業(yè)標(biāo)準(zhǔn)</span><span style="font-family:times new roman; font-size:12px">Q/AEXJ4</span><span style="font-family:幼圓; font-size:12px">。</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px">6.2制造保證：用戶在按本使用說(shuō)明書規(guī)定的使用條件使用或操作本儀表, 自購(gòu)貨日起12個(gè)月內(nèi)，屬因制造不良而損壞或不能正常運(yùn)行，本廠負(fù)責(zé)為用戶免費(fèi)修理或調(diào)換。本儀表實(shí)行終身維修。</span></span></p><p><span style="font-size:16px"><strong><span style="font-family:幼圓; font-size:12px">7 儀器的成套性</span></strong></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 隨同每臺(tái)儀器提供下列技術(shù)文件與附件：</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 產(chǎn)品合格證書 1份使用說(shuō)明書 1份</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 電源線 1根測(cè)量導(dǎo)線 1付</span></span></p><p><span style="font-size:16px"> <span style="font-family:幼圓; font-size:12px">PC57外接電源 1個(gè)（僅PC57）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 選購(gòu)件：</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 1．DQ-150導(dǎo)體電阻測(cè)量夾具（Φ0</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">Φ8mm）</span></span></p><table style="border-collapse:collapse; border-spacing:0px; color:rgb(71, 71, 71); font-family:微軟雅黑,arial,helvetica,sans-serif; font-size:12px; margin-left:-5.1pt; width:698px"><tbody><tr><td style="vertical-align:top; width:698px"><p><span style="font-size:16px"> <span style="font-family:幼圓; font-size:12px"> 2．DQ-240導(dǎo)體電阻測(cè)量夾具（Φ0</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">Φ20mm）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 3．DQ-630導(dǎo)體電阻測(cè)量夾具（Φ1</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">Φ38mm）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 4．成盤電纜直流電阻測(cè)試鉗（中型Φ0</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">Φ32mm）</span></span></p><p><span style="font-size:16px"><span style="font-family:幼圓; font-size:12px"> 5．成盤電纜直流電阻測(cè)試鉗（大型Φ8</span><span style="font-family:times new roman; font-size:12px">—</span><span style="font-family:幼圓; font-size:12px">Φ41mm）</span></span></p><p><span style="font-size:16px"> </span></p></td></tr></tbody></table><br /> <div class="tueciplt7sn" id="nr_textbox"><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="tueciplt7sn" 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 id="tueciplt7sn" class="msg_ipt1"><input class="textborder" size="30" name="Product" id="Product" value="PC57直流電阻測(cè)量?jī)x" placeholder="請(qǐng)輸入產(chǎn)品名稱" /></div> </li> <li> <h4>您的單位：</h4> <div 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