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</ul> </div> <script type="text/javascript"> $(document).ready(function() { $('.gallery').lightSlider({ gallery:true, minSlide:1, maxSlide:1, currentPagerPosition:'left' }); }); </script> <div id="iy7ludgahikt" class="clear"></div> </div>  <div id="iy7ludgahikt" class="x-1"> <div id="iy7ludgahikt" class="b-1">基礎(chǔ)信息<span>Product information</span></div> <div id="iy7ludgahikt" class="proshowname">產(chǎn)品名稱：<h1>SB2230直流數(shù)字電阻測量儀</h1></div> <p>產(chǎn)品型號：</p> <p>廠商性質(zhì)：生產(chǎn)廠家</p> <p>所在地：上海市</p> <p>更新時間：2024-08-05</p> <p>產(chǎn)品簡介：</p> <p><p> <div id="iy7ludgahikt" class="desc">SB2230直流數(shù)字電阻測量儀簡要說明：測量范圍:1μΩ～1.9999kΩ 準(zhǔn)確度:0.05% 顯示方式:四位半LED四位半LED</div> </p></p> </div>  <div id="iy7ludgahikt" class="x-1"> <div id="iy7ludgahikt" class="b-1">產(chǎn)品特性<span>Product characteristics</span></div> <link type="text/css" rel="stylesheet" href="/css/property.css"> <script> window.onload=function(){ changeTableHeight(); } window.onresize=function(){ changeTableHeight(); } function changeTableHeight(){ $(".proshowParameter table th").each(function?(i,o){ ????var $this=$(o),? ????height=$this.next().height(); ????$(this).css("height",height); var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); $(".proshowParameter table td").each(function?(i,o){ var obj = $(o); var val = obj.text(); if(val == '' || val == null || val == undefined){ $(this).addClass('none'); }else{ $(this).removeClass('none'); } }); } </script> <section class="proshowParameter"> <table style=" margin-bottom:20px;"> <tbody> <tr><th>品牌</th><td>其他品牌</td><th>產(chǎn)地類別</th><td>國產(chǎn)</td></tr><tr><th>應(yīng)用領(lǐng)域</th><td>環(huán)保,化工,地礦,能源,電子</td> <th></th><td></td></tr> </tbody> </table> </section><p><span style="font-size:16px"><strong><span style="font-family:simsun"> SB2230</span><span style="font-family:simsun">型直流數(shù)字電阻測試儀，</span><span style="font-family:simsun">SB2230</span><span style="font-family:simsun">直流數(shù)字電阻測量儀</span></strong></span></p><p><font color="#e53333" face="simsun"><strong> </strong></font><span style="font-family:宋體; font-size:10.5pt">SB2230直流數(shù)字電阻測試儀是一種由CMOS大規(guī)模集成電路組成的4</span><span style="font-family:宋體; font-size:10.5pt">1</span><span style="font-family:宋體; font-size:10.5pt">/</span><span style="font-family:宋體; font-size:10.5pt">2</span><span style="font-family:宋體; font-size:10.5pt">位便攜式數(shù)字儀表，其測量結(jié)果用五位LED顯示。該表具有性能優(yōu)良，可靠性好，價格低廉，使用方便的特點，它還可用作為1</span><span style="font-family:宋體; font-size:10.5pt">μ</span><span style="font-family:宋體; font-size:10.5pt">V~2V的電壓測量。此表*適合用來測量金屬導(dǎo)體、導(dǎo)線以及其它的接觸點的電阻，除此以外，還可用來測試電機、變壓器的繞線電阻等。因此它可以廣泛地使用于實驗室、工礦現(xiàn)場等，是一個極為理想的測量儀器。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2、技術(shù)數(shù)據(jù)</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.1 使用條件</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.1.1環(huán)境溫度：20℃±15℃</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.1.2環(huán)境相對濕度：75%以下</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.1.3供電電源：220V±10%，50Hz±1Hz</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.1.4無劇烈震動和機械沖擊。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.1.5空氣中不含有足以腐蝕儀器的灰塵和雜質(zhì)。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.1.6不應(yīng)受強的電磁場干擾。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.1.7通風(fēng)條件良好。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.2 量程、測量范圍、分辨力及基本誤差</span></p><p><span style="font-family:宋體; font-size:10.5pt">產(chǎn)品在標(biāo)準(zhǔn)條件下符合表1規(guī)定。</span></p><p><span style="font-family:宋體; font-size:10.5pt">表1</span></p><table style="background-color:rgb(255, 255, 255); border-collapse:collapse; border-spacing:0px; box-sizing:border-box; font-family:microsoft yahei,arial,sans-serif; margin-left:-3.6pt; padding:0pt 5.4pt; table-layout:inherit"><tbody><tr><td style="border-color:rgb(0, 0, 0); width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">量程</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">測量范圍</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">分辨力</span></p></td><td style="width:126pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">基本誤差</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">20mΩ</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">19.999mΩ</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">1μΩ</span></p></td><td style="width:126pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">±(0.05%讀數(shù)值+3字)</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">200mΩ</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">199.99mΩ</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">10μΩ</span></p></td><td rowspan="5" style="width:126pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">±(0.05%讀數(shù)值+2字)</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">2Ω</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">1.9999Ω</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">100μΩ</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">20Ω</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">19.999Ω</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">1mΩ</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">200Ω</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">199.99Ω</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">10mΩ</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">2KΩ</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">1999.9Ω</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">100mΩ</span></p></td></tr></tbody></table><p> </p><p><span style="font-family:宋體; font-size:10.5pt">2.3 長期穩(wěn)定性</span></p><p><span style="font-family:宋體; font-size:10.5pt">產(chǎn)品在參比條件下，6個月內(nèi)誤差如表2所示。</span></p><p style="text-align:center"> </p><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">表2</span></p><table style="background-color:rgb(255, 255, 255); border-collapse:collapse; border-spacing:0px; box-sizing:border-box; font-family:microsoft yahei,arial,sans-serif; margin-left:5.4pt; padding:0pt 5.4pt; table-layout:inherit"><tbody><tr><td style="border-color:rgb(0, 0, 0); width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">量程</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">測量范圍</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">分辨力</span></p></td><td style="width:117pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">基本誤差</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">20mΩ</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">19.999mΩ</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">1μΩ</span></p></td><td style="width:117pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">±(0.06%讀數(shù)值+3字)</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">200mΩ</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">199.99mΩ</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">10μΩ</span></p></td><td rowspan="5" style="width:117pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">±(0.06%讀數(shù)值+2字)</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">2Ω</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">1.9999Ω</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">100μΩ</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">20Ω</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">19.999Ω</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">1mΩ</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">200Ω</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">199.99Ω</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">10mΩ</span></p></td></tr><tr><td style="width:63pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">2KΩ</span></p></td><td style="width:72pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">1999.9Ω</span></p></td><td style="width:54pt"><p style="text-align:center"><span style="font-family:宋體; font-size:10.5pt">100mΩ</span></p></td></tr></tbody></table><p><span style="font-family:宋體; font-size:10.5pt">2.4 溫度附加誤差</span></p><p><span style="font-family:宋體; font-size:10.5pt">產(chǎn)品在偏離20±1℃的情況下工作，環(huán)境溫度每變化10℃所引起的附加誤差應(yīng)不超過基本誤差值。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.5 極性、量程過載指示。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.5.1在電阻測量時不顯示極性（如顯示“—”極性，則是V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">和V</span><span style="font-family:宋體; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">接錯，調(diào)換一下即可）。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.5.2此極性在零位調(diào)準(zhǔn)時候用。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.5.3當(dāng)輸入電阻值超過儀表測量范圍時儀表顯示閃爍。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.5.4從20mΩ至2KΩ都采用手動量程。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.6 采樣速度：2~3次/s。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.7 消耗功率：不大于30W。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.8 重量：不大于 3kg。</span></p><p><span style="font-family:宋體; font-size:10.5pt">2.9 外形尺寸：1×b×h：240×285×105(mm)。</span></p><p><span style="font-family:宋體; font-size:10.5pt">3、工作原理與特點：</span></p><p><span style="font-family:宋體; font-size:10.5pt">本儀器是4</span><span style="font-family:宋體; font-size:10.5pt">1</span><span style="font-family:宋體; font-size:10.5pt">/</span><span style="font-family:宋體; font-size:10.5pt">2</span><span style="font-family:宋體; font-size:10.5pt">位LED數(shù)顯儀表，具有1</span><span style="font-family:宋體; font-size:10.5pt">μ</span><span style="font-family:宋體; font-size:10.5pt">V靈敏度的數(shù)字電壓表和一個精密恒流源組成，如圖1所示：</span></p><p><span style="font-family:宋體; font-size:12pt"> <img alt="" src="http://y1.yizimg.com/ComFolder/486823//201202/15JM[U%601T~P4HQJAHI0HL~Q.jpg?imageView2/2/format/webp/" style="height:auto; width:337" /></span></p><p><span style="font-family:宋體; font-size:10.5pt">由精密恒流源流出的電流在被測電阻上產(chǎn)生一個電壓降。同時用4</span><span style="font-family:宋體; font-size:10.5pt">1</span><span style="font-family:宋體; font-size:10.5pt">/</span><span style="font-family:宋體; font-size:10.5pt">2</span><span style="font-family:宋體; font-size:10.5pt">位數(shù)字電壓表去測試這個電壓降，其測量結(jié)果用電阻值反應(yīng)出來。因此該表除為可測試20mΩ~2KΩ的電阻之外，還可以測20mV，200mV，2V三檔電壓。</span></p><p><span style="font-family:宋體; font-size:10.5pt">4、使用說明</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.1 產(chǎn)品外形</span></p><p><span style="font-family:宋體; font-size:10.5pt">本產(chǎn)品前視圖如圖2，后視圖如圖3.</span></p><p><span style="font-family:宋體; font-size:12pt"> <img alt="" src="http://y1.yizimg.com/ComFolder/486823//201202/%E5%9B%BE%E7%89%872(2).png?imageView2/2/format/webp/" style="height:auto; width:381" /></span><span style="font-family:宋體; font-size:12pt"> </span></p><p><span style="font-family:宋體; font-size:10.5pt">圖 2</span></p><p><span style="font-family:宋體; font-size:10.5pt">圖中</span><span style="font-family:宋體; font-size:10.5pt">：1——面板；2——外殼；3——量程開關(guān)；</span></p><p><span style="font-family:宋體; font-size:10.5pt">4——調(diào)零；5——輸入插孔； </span></p><p><span style="font-family:宋體; font-size:10.5pt"><img alt="" src="http://y1.yizimg.com/ComFolder/486823//201202/%E5%9B%BE%E7%89%873(2).png?imageView2/2/format/webp/" style="height:auto; width:305" /></span></p><p><span style="font-family:宋體; font-size:10.5pt">圖 3</span></p><p><span style="font-family:宋體; font-size:10.5pt">圖中：1——后面板；2——三極管；3——散熱件；4——穩(wěn)壓器；</span></p><p><span style="font-family:宋體; font-size:10.5pt">5——電源插座（帶0.5A 保險絲）；6——接地樁；</span></p><p><span style="font-family:宋體; font-size:10.5pt"> 8——電源開關(guān)；</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2 使用注意事項</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2.1接通電源預(yù)熱30min即可進行測量。</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2.2儀器經(jīng)過劇烈的環(huán)境條件變化或長期不使用，在*使用時應(yīng)通電1~2h。</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2.3在測量過程中應(yīng)注意量程范圍。</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2.3.1測試夾子的用法如圖4，V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">是電壓優(yōu)異，</span><span style="font-family:times new roman; font-size:10.5pt">V</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">是電壓低端，</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">是電流優(yōu)異，</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">是電流低端（在有些儀器中，用I</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">來表示</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">和用I</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">來表示</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">）。按圖4接好后，然后接通儀器的電源，待面板上讀數(shù)穩(wěn)定后，數(shù)值就是A、B間的被測電阻。</span></p><p><span style="font-family:宋體; font-size:10.5pt"><img alt="" src="http://y1.yizimg.com/ComFolder/486823//201202/%E5%9B%BE%E7%89%874(1).png?imageView2/2/format/webp/" style="height:auto; width:181" /></span></p><p> </p><p> </p><p> </p><p> </p><p> </p><p> </p><p><span style="font-family:宋體; font-size:10.5pt"> 圖 4</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2.3.2導(dǎo)線和導(dǎo)體的測法，建議用導(dǎo)線測試設(shè)備和SB2230配合在一起使用，基本原理如圖5，如測導(dǎo)線A、B兩點之間的電阻。恒流源電流I</span><span style="font-family:宋體; font-size:7pt">O</span><span style="font-family:宋體; font-size:10.5pt">的方向是從</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">→C→A→B→D→</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">，A、B之間的壓降即用電阻值來表示。</span></p><p><span style="font-family:宋體; font-size:10.5pt"> 從圖中可看出電壓端接觸點要小，尤其在測試低阻值導(dǎo)線時，更要注意，如圖中的 A、B兩點電流端接觸端接觸面要大、要緊。如圖中的C點和D點。</span></p><p><span style="font-family:宋體; font-size:10.5pt">在測試導(dǎo)線時，要注意觀察導(dǎo)線的環(huán)境溫度和被測導(dǎo)線本身的溫度（升溫）。</span></p><p><span style="font-family:宋體; font-size:10.5pt"><img alt="" src="http://y1.yizimg.com/ComFolder/486823//201202/%E5%9B%BE%E7%89%875(2).png?imageView2/2/format/webp/" style="height:auto; width:340" /> </span></p><p> </p><p> </p><p> </p><p> </p><p> </p><p><span style="font-family:宋體; font-size:10.5pt">圖 5</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2.3.3帶電感的電阻測量（小電感，不宜測大型電力變壓器、發(fā)電機、電動機等）。</span></p><p><span style="font-family:宋體; font-size:10.5pt">接通儀器電源之前，將儀器測試導(dǎo)線與被測對象相連，如圖6所示</span></p><p><span style="font-family:宋體; font-size:10.5pt"><img alt="" src="http://y1.yizimg.com/ComFolder/486823//201202/%E5%9B%BE%E7%89%876.png?imageView2/2/format/webp/" style="height:auto; width:217" /></span></p><p> </p><p> </p><p> </p><p> </p><p> </p><p> </p><p><span style="font-family:宋體; font-size:10.5pt"> 圖 6</span></p><p><span style="font-family:宋體; font-size:10.5pt"> 電阻（帶電感）測試時注意事項：</span></p><p><span style="font-family:宋體; font-size:10.5pt">①選擇相對應(yīng)的量程；</span></p><p><span style="font-family:宋體; font-size:10.5pt">②按圖6示意夾上夾子；</span></p><p><span style="font-family:宋體; font-size:10.5pt">③打開電源，顯示屏?xí)霈F(xiàn)閃爍，約幾秒（時間根據(jù)電感大?。┖螅姘迳献x數(shù)穩(wěn)定后讀取數(shù)值；</span></p><p><span style="font-family:宋體; font-size:10.5pt">④測試結(jié)束，先關(guān)電源等待約幾秒（時間根據(jù)電感大?。┖螅∠聤A子。</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2.4儀器作電壓表的用法</span></p><p><span style="font-family:宋體; font-size:10.5pt">把</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt"> 短接，V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">V</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt"> 作為電壓測量端，當(dāng)分別按下20m</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">、200 m</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">、200</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔時，</span></p><p><span style="font-family:宋體; font-size:10.5pt">20m</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔，V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">V</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端可測0</span><span style="font-family:times new roman; font-size:10.5pt">~</span><span style="font-family:宋體; font-size:10.5pt"> 19.999mV</span></p><p><span style="font-family:宋體; font-size:10.5pt">200m</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔，V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">V</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端可測0</span><span style="font-family:times new roman; font-size:10.5pt">~</span><span style="font-family:宋體; font-size:10.5pt"> 199.99mV</span></p><p><span style="font-family:宋體; font-size:10.5pt">200</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔，V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">V</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端可測0</span><span style="font-family:times new roman; font-size:10.5pt">~</span><span style="font-family:宋體; font-size:10.5pt"> 1.9999V</span></p><p><span style="font-family:宋體; font-size:10.5pt">4.2.5儀器作恒流源的用法</span></p><p><span style="font-family:宋體; font-size:10.5pt">V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">V</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">短接，當(dāng)分別按下20m</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">、2</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">、20</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">、2K</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔時</span></p><p><span style="font-family:宋體; font-size:10.5pt">20m</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔，</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端可輸出1A電流</span></p><p><span style="font-family:宋體; font-size:10.5pt">2</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔，</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端可輸出0.1A電流</span></p><p><span style="font-family:宋體; font-size:10.5pt">20</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔，</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端可輸出0.01A電流</span></p><p><span style="font-family:宋體; font-size:10.5pt">2K</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">檔，</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端可輸出0.001A電流</span></p><p><span style="font-family:宋體; font-size:10.5pt">5、維修與復(fù)核</span></p><p><span style="font-family:宋體; font-size:10.5pt">為了保證儀表的使用準(zhǔn)確性必須定期對它進行復(fù)核、維護和調(diào)節(jié)。</span></p><p><span style="font-family:宋體; font-size:10.5pt">首先松開底部的四個螺絲，把表蓋取下，然后可用軟毛刷輕輕地拂去灰塵，再檢查集成電路和其它插件是否接觸良好。之后才可以進行校準(zhǔn)。</span></p><p><span style="font-family:宋體; font-size:10.5pt">（1）零位校準(zhǔn)，量程開關(guān)按至20m</span><span style="font-family:times new roman; font-size:10.5pt">Ω</span><span style="font-family:宋體; font-size:10.5pt">擋</span><span style="font-family:times new roman; font-size:10.5pt">,</span><span style="font-family:宋體; font-size:10.5pt">V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:times new roman; font-size:10.5pt">V</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">表棒短接，</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">H</span><span style="font-family:times new roman; font-size:10.5pt">R</span><span style="font-family:times new roman; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">表棒短接，調(diào)面板上的上、下小三角至</span><span style="font-family:宋體; font-size:10.5pt">±</span><span style="font-family:宋體; font-size:10.5pt">00.000時為*佳。</span></p><p><span style="font-family:宋體; font-size:10.5pt">（2）電壓檔的調(diào)準(zhǔn)。</span></p><p><span style="font-family:宋體; font-size:10.5pt">所需設(shè)備：0.01%精度的電壓源。</span></p><p><span style="font-family:宋體; font-size:10.5pt">調(diào)準(zhǔn)前輸入線短接R</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">和R</span><span style="font-family:宋體; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">兩端，并按上對應(yīng)的琴式開關(guān)，這時該表作為一個電壓表。按下200Ω或者2KΩ時為2V檔量程的電壓表，按下200mΩ或者2Ω時為200mV檔量的電壓表，按下20mΩ檔時為20mV檔量程的電壓表，然后把量程范圍的標(biāo)準(zhǔn)電壓，分別送入該表V</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、V</span><span style="font-family:宋體; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端（一般為1.9000V，190.00mV和19.000mV）。</span></p><p><span style="font-family:宋體; font-size:10.5pt">在2V量程可調(diào)節(jié)W</span><span style="font-family:宋體; font-size:7pt">1</span><span style="font-family:宋體; font-size:10.5pt">使其準(zhǔn)確；</span></p><p><span style="font-family:宋體; font-size:10.5pt">在200mV量程可調(diào)節(jié)W</span><span style="font-family:宋體; font-size:7pt">2</span><span style="font-family:宋體; font-size:10.5pt">使其準(zhǔn)確；</span></p><p><span style="font-family:宋體; font-size:10.5pt">在20mV量程可調(diào)節(jié)W</span><span style="font-family:宋體; font-size:7pt">3</span><span style="font-family:宋體; font-size:10.5pt">使其準(zhǔn)確。</span></p><p><span style="font-family:宋體; font-size:10.5pt">根據(jù)以上電壓檔調(diào)準(zhǔn)后，用同樣方法也可測試1.9000V，190.00mV和19.000mV。</span></p><p><span style="font-family:宋體; font-size:10.5pt">（3）恒流源部分的調(diào)準(zhǔn)。</span></p><p><span style="font-family:宋體; font-size:10.5pt">所需設(shè)備：0.01%精度電流表。</span></p><p><span style="font-family:宋體; font-size:10.5pt">選擇對應(yīng)的量程（2KΩ檔相當(dāng)于1mA恒電源，200Ω、20Ω檔相當(dāng)于10mA恒電源，2Ω檔相當(dāng)于100mA恒電源，200mΩ、20mΩ檔相當(dāng)于1A恒電源），分別用電流表接入R</span><span style="font-family:宋體; font-size:7pt">H</span><span style="font-family:宋體; font-size:10.5pt">、R</span><span style="font-family:宋體; font-size:7pt">L</span><span style="font-family:宋體; font-size:10.5pt">端。</span></p><p><span style="font-family:宋體; font-size:10.5pt">在2KΩ量程可調(diào)節(jié)W</span><span style="font-family:宋體; font-size:7pt">7</span><span style="font-family:宋體; font-size:10.5pt">使其準(zhǔn)確；</span></p><p><span style="font-family:宋體; font-size:10.5pt">在20Ω量程可調(diào)節(jié)W</span><span style="font-family:宋體; font-size:7pt">6</span><span style="font-family:宋體; font-size:10.5pt">使其準(zhǔn)確；</span></p><p><span style="font-family:宋體; font-size:10.5pt">在2Ω量程可調(diào)節(jié)W</span><span style="font-family:宋體; font-size:7pt">5</span><span style="font-family:宋體; font-size:10.5pt">使其準(zhǔn)確；</span></p><p><span style="font-family:宋體; font-size:10.5pt">在20mΩ量程可調(diào)節(jié)W</span><span style="font-family:宋體; font-size:7pt">4</span><span style="font-family:宋體; font-size:10.5pt">使其準(zhǔn)確；</span></p><p><span style="font-family:宋體; font-size:10.5pt">首先是200mΩ量程，調(diào)節(jié)W</span><span style="font-family:宋體; font-size:7pt">8</span><span style="font-family:宋體; font-size:10.5pt">使其準(zhǔn)確。</span></p><p><span style="font-family:宋體; font-size:10.5pt">200Ω檔是不需要調(diào)準(zhǔn)的，它們的準(zhǔn)確度是由電壓檔的放大倍數(shù)和其它電阻檔調(diào)準(zhǔn)時已得到充分的保證。</span></p><p> </p><p><span style="font-family:宋體; font-size:10.5pt">電位器分布圖：</span></p><p style="text-align:center"><span style="font-family:宋體; font-size:12pt"><img alt="" src="http://y1.yizimg.com/ComFolder/486823//201202/%E5%9B%BE%E7%89%877.png?imageView2/2/format/webp/" style="height:auto; width:216" /></span></p><p><span style="font-family:宋體; font-size:10.5pt">6、成套性</span></p><p><span style="font-family:宋體; font-size:10.5pt">隨同產(chǎn)品一起供應(yīng)的技術(shù)文件有：</span></p><p><span style="font-family:times new roman; font-size:10.5pt">a </span><span style="font-family:宋體; font-size:10.5pt">合格證 1份</span></p><p><span style="font-family:宋體; font-size:10.5pt">b 使用說明書 1份</span></p><p><span style="font-family:宋體; font-size:10.5pt">c 裝箱單 1份</span></p><p><span style="font-family:宋體; font-size:10.5pt">隨同產(chǎn)品一起供應(yīng)的附件有：</span></p><p><span style="font-family:宋體; font-size:10.5pt">a 0.5A保險絲（內(nèi)附） 1只</span></p><p><span style="font-family:宋體; font-size:10.5pt">b 輸入線 1副</span></p><p><span style="font-family:宋體; font-size:10.5pt">c 電源線 1根</span></p><p><span style="font-family:宋體; font-size:10.5pt">7、保管及使用期限</span></p><p><span style="font-family:宋體; font-size:10.5pt">儀器存放在環(huán)境溫度為0~40</span><span style="font-family:宋體; font-size:10.5pt">℃</span><span style="font-family:宋體; font-size:10.5pt">，相對濕度80%以下，在空氣中不含足以引起腐蝕的氣體或有害雜質(zhì)。用戶在遵守安裝、運輸和使用規(guī)則的條件下，從制造廠發(fā)貨日起12個月內(nèi)，產(chǎn)品因制造質(zhì)量不佳發(fā)生的損壞或不能正常工作，制造廠應(yīng)負責(zé)免費為用戶修理產(chǎn)品及更換零件。</span></p> </div> <link rel="stylesheet" type="text/css" href="/css/MessageBoard_style.css"> <script language="javascript" src="/skins/Scripts/order.js?v=20210318" type="text/javascript"></script> <a name="order" id="order"></a> <div id="iy7ludgahikt" 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="iy7ludgahikt" 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