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style="font-size:10.5000pt"><span style="font-family:宋體">將滅弧室兩觸頭拉開一定的開距，動觸頭施力高壓脈沖靜觸頭施加負離子電流。由于漏電電流非常弱，易于受到外界不同的干擾而降低精度。因此，必須通過勵磁線圈繞于滅弧室外側(cè)，向線圈通以大電流，從而在滅弧室內(nèi)產(chǎn)生與高壓同步的脈沖磁場來，加速離子流，按比例放大采樣率。這樣，在脈沖磁場的作用下，滅弧室中的電子作螺旋運動，并與殘余氣體分子發(fā)生碰撞電離，所產(chǎn)生的離子電流與殘余氣體密度即真空度近似成比例關(guān)系。對于直徑不同的真空管，在同等真空度條件下，離子電流的大小也不相同。通過實驗可以標定出各種管型的真空度與離子電流的對應(yīng)關(guān)系曲線。當測知離子電流后，調(diào)用內(nèi)部相對應(yīng)的比例參樣，加以運算，得出準確真實真空度值。也就是說通過查詢該管型的離子電流——真空度曲線獲得該管型的真空度，這一</span></span></p><p>真空度測試儀技術(shù)參數(shù)</p><p><span style="font-family:宋體; font-size:10.5pt; text-align:center">所測真空泡：電壓等級6KV-35KV以上</span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">測量范圍：1</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">0</span></span><sup><span style="font-size:10.5000pt"><span style="font-family:宋體">-5</span></span></sup><span style="font-size:5.5000pt"><span style="font-family:宋體">-</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">1</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">0</span></span><sup><span style="font-size:10.5000pt"><span style="font-family:宋體">-1</span></span></sup><span style="font-size:10.5000pt"><span style="font-family:宋體">Pa</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">測量誤差：1</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">0</span></span><sup><span style="font-size:10.5000pt"><span style="font-family:宋體">-</span></span></sup><strong><sup><span style="font-size:10.5pt"><span style="font-family:宋體">4</span></span></sup></strong><span style="font-size:6.5000pt"><span style="font-family:宋體">-</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">1</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">0</span></span><sup><span style="font-size:10.5000pt"><span style="font-family:宋體">-1</span></span></sup><span style="font-size:10.5000pt"><span style="font-family:宋體">Pa中誤差±10%</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">測量分辨率：1</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">0</span></span><sup><span style="font-size:10.5000pt"><span style="font-family:宋體">-5</span></span></sup><span style="font-size:10.5000pt"><span style="font-family:宋體"> Pa</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">漏氣的滅弧室在測量中將發(fā)生電擊穿，本機處于保護狀態(tài)。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">允許環(huán)溫：-20℃-50℃，如在0℃以下測試時請先將機器通電20分鐘后再使用。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">空氣濕度：＜85%RH</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">輸入電源：AC220V</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">±</span></span><span style="font-size:10.5000pt"><span style="font-family:宋體">10% 50/60HZ</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋體">外形尺寸：350×320×225mm</span></span></p><p style="text-align:center"> </p> <div id="ubjn47ipz" class="clear"></div> </div> <div id="ubjn47ipz" class="article"> <p>上一篇：<a href="/Article-1690598.html">真空度測試儀標準技術(shù)參數(shù)</a></p> <p>下一篇：<a href="/Article-1690586.html">淺談?wù)婵斩葴y試儀性能特點</a></p> </div> <div id="ubjn47ipz" class="clear"></div> </div> </div> <div id="ubjn47ipz" class="n-9"> <div id="ubjn47ipz" class="c-right"> <div id="ubjn47ipz" class="c-1 r-pro"> <div id="ubjn47ipz" class="c-left"> <div id="ubjn47ipz" class="h-2"><a href="/products.html">產(chǎn)品分類</a></div> <ul> <li><a href="/ParentList-1388067.html" onmouseover="showsubmenu('大電流發(fā)生器')" class="yj">大電流發(fā)生器</a> <div class="ubjn47ipz" id="submenu_大電流發(fā)生器" style="display:none"> <ul> </ul> </div> </li> <li><a href="/ParentList-1384344.html" onmouseover="showsubmenu('LCR數(shù)字電橋')" 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