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class="search-btn" value=""> </form> </div> <div id="okiwwouaksga" class="clear"></div> </div> </div> <div id="okiwwouaksga" class="nybanner"><img src="/skins/106676/images/nybanner.jpg"></div> <script src="http://www.chem17.com/mystat.aspx?u=mbdzkj"></script>  <div id="okiwwouaksga" class="ncontent w_1100"> <div id="okiwwouaksga" class="h-6">技術文章<span>您當前的位置：<a href="/">首頁</a> > <a href="/article.html">技術文章</a> > 智能回路電阻測試儀測試原理與結構</span></div>  <div id="okiwwouaksga" class="n-3 c-news"> <div id="okiwwouaksga" class="newsnr"> <h1>智能回路電阻測試儀測試原理與結構</h1> <p class="source"><span>日期：2024-11-18</span><span>瀏覽：57次</span></p> <div> <p style="text-indent:43px;line-height:150%"><span style=";font-family:宋體;line-height:150%;font-size:21px"></span></p><p><strong><span style="font-family: 宋體; font-size: 16px;">智能回路電阻測試儀測試原理與結構</span></strong></p><p><span style="font-size: 16px;"><span style="font-family: 宋體; font-size: 21px;"><span style="font-size: 16px; font-family: 宋體;">采用高頻開關電源技術和數(shù)字電路技術相結合設計而成。它適用于開關控制設備回路電阻的測量。其測試電流采用國家標準推薦的直流</span>100A。可在直<span style="font-size: 16px; font-family: 宋體;">流</span>100A的情況下直接測得回路電阻，測試結果用<span style="font-size: 16px; font-family: 宋體;">大屏幕液晶LCD顯示，并有數(shù)據存儲、輸出打印、時間設置等功能</span>。<span style="font-size: 16px; font-family: 宋體;">另有50A檔位供用戶選擇。</span>儀器測量準確、性能穩(wěn)定，符合電力、供電部門現(xiàn)場高壓開關維修和高壓開關廠回路電阻測試的要求，</span><span style="text-indent: 43px; font-family: 宋體; line-height: 150%; font-size: 21px;">本儀器采用電流電壓法測試原理，也稱四線法測試技術，原理方框圖見圖2。</span></span></p><p style="text-indent:43px;line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 16px;"></span></p><p style="text-align: center"><img src="https://img48.chem17.com/9/20241118/638675139772609567890.png" alt="c17e72d4-3c15-4378-949f-9fc25d8a47c5.png" style="width:800px;"/></p><p style="text-align:center;line-height:150%"><span style="font-family: 宋體; font-size: 14px;"> <br/></span></p><p style="text-align:center;line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;"><span style="font-size: 16px; font-family: 宋體;">圖</span>2 <span style="font-size: 16px; font-family: 宋體;">測試原理圖</span></span></p><p style="text-indent:43px;line-height:150%"><span style="font-size: 16px;"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;"><span style="font-size: 16px; font-family: 宋體;">電流源輸出恒定電流流過標準電阻</span>R</span><sub><span style="font-family: 宋體; line-height: 150%; font-size: 21px; vertical-align: sub;">0</span></sub><span style="font-family: 宋體; line-height: 150%; font-size: 21px;"><span style="font-size: 16px; font-family: 宋體;">和待測電阻</span>Rx。采樣標準電阻R</span><sub><span style="font-family: 宋體; line-height: 150%; font-size: 21px; vertical-align: sub;">0</span></sub><span style="font-family: 宋體; line-height: 150%; font-size: 21px;"><span style="font-size: 16px; font-family: 宋體;">上的電壓信號</span>U</span><sub><span style="font-family: 宋體; line-height: 150%; font-size: 21px; vertical-align: sub;">0</span></sub><span style="font-family: 宋體; line-height: 150%; font-size: 21px;"><span style="font-size: 16px; font-family: 宋體;">，經濾波放大處理后送入</span>AD轉換為數(shù)字量，進而計算出電流值I，見公式（1）。同樣，采樣待測電阻Rx上的電壓信號Ux，經濾波、多級放大處理后送入AD轉換為數(shù)字量，通過公式（2）計算出電阻值R</span></span></p><p style="text-indent:43px;line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 16px;">智能回路電阻測試儀結構</span></p><p style="text-indent:43px;line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 16px;"></span></p><p style="text-align: center"><img style="max-width: 800px; max-height: 300%; width: 511px; height: 511px;" src="https://img41.chem17.com/9/20241118/638675140801848111726.jpg" title="9eaec2c5b54a1d29ae1dd103215c588.jpg" alt="9eaec2c5b54a1d29ae1dd103215c588.jpg" width="511" height="511"/></p><p style="text-indent:43px;line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;"><br/></span></p><p style="text-indent:43px;line-height:150%"><br/></p><div id="okiwwouaksga" class="tabledivclass" style="width: 99%; float: left;"><table border="0" cellspacing="0" align="left" style="max-width: 748px; width: 813px; table-layout: fixed;"><colgroup><col data-offset-left="8.584558486938477" data-offset-right="214.9080753326416" data-resize-pixel="206.32351684570312" data-resize-percent="25.37804635248501" style="width: 25.378%;"/><col data-offset-left="149.9080810546875" data-offset-right="386.3602752685547" data-resize-pixel="236.4521942138672" data-resize-percent="29.08391072741294" style="width: 29.0839%;"/><col data-offset-left="386.3602600097656" data-offset-right="755.4043579101562" data-resize-pixel="369.0440979003906" data-resize-percent="45.39287797052775" style="width: 45.3929%;"/></colgroup><tbody><tr class="firstRow"><td valign="top" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-color: windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">1、打印機</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: 1px solid windowtext; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">2、接地柱</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: 1px solid windowtext; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 16px;">3、電流輸出I＋</span></p></td></tr><tr><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">4、測量輸入U＋</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">5、測量輸入U－</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 16px;">6、電流輸出I－</span></p></td></tr><tr><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">7、對比度調節(jié)</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">8、旋轉鼠標</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">9、復位按鈕</span></p></td></tr><tr><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">10、液晶屏</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">11、電源開關</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 21px;">12、電源插座</span></p></td></tr><tr><td valign="top" style="padding: 0px 7px; border-left: 1px solid windowtext; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><p style="line-height:150%"><span style="font-family: 宋體; line-height: 150%; font-size: 16px;">13、USB接口</span></p></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><br/></td><td valign="top" style="padding: 0px 7px; border-left: none; border-right: 1px solid windowtext; border-top: none; border-bottom: 1px solid windowtext;"><br/></td></tr></tbody></table></div><p style="text-indent:43px;line-height:150%"><span style="text-indent: 203px; font-family: 宋體; line-height: 150%; font-size: 21px;"><strong></strong> </span><br/></p><p><br/></p> <div id="okiwwouaksga" 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<li><a href="/SonList-1324313.html">> 不銹鋼劃線板</a></li> <li><a href="/SonList-1324312.html">> 不銹鋼壓線板</a></li> </ul> </div> </li> <li><a href="/ParentList-1324298.html" onmouseover="showsubmenu('漆包線電動刮漆器總匯')" class="yj">漆包線電動刮漆器總匯</a> <div class="okiwwouaksga" id="submenu_漆包線電動刮漆器總匯" style="display:none"> <ul> <li><a href="/SonList-1324300.html">> 漆包線電動刮漆器</a></li> </ul> </div> </li> <li><a href="/ParentList-1324280.html" onmouseover="showsubmenu('電機萬用繞線?？倕R')" class="yj">電機萬用繞線?？倕R</a> <div class="okiwwouaksga" id="submenu_電機萬用繞線模總匯" style="display:none"> <ul> <li><a href="/SonList-1324281.html">> 電機萬用繞線模</a></li> </ul> </div> </li> <li><a href="/ParentList-1324244.html" onmouseover="showsubmenu('拆線機、烘箱總匯')" class="yj">拆線機、烘箱總匯</a> <div class="okiwwouaksga" id="submenu_拆線機、烘箱總匯" style="display:none"> <ul> <li><a href="/SonList-1324253.html">> 電機鼠籠烘烤器</a></li> <li><a href="/SonList-1324252.html">> 電熱恒溫鼓風干燥箱</a></li> <li><a href="/SonList-1324250.html">> 電機浸漆烘干機</a></li> <li><a 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