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　　負(fù)離子測試儀是針對所采樣的空氣（一般是由每秒400cm3的速度進入進氣口，再由排氣口排出的）進行測量。不論正離子或負(fù)離子（依照儀器所設(shè)定的極性）都是由這快速的空氣流所帶入儀器內(nèi)部，而聚集于電荷收集片上。電荷收集板上所測量到的數(shù)量（于儀器確實接地，對地電阻大于10GΩ時所測得的電壓），就是每秒鐘所感應(yīng)到的電荷量。極性開關(guān)決定測量正離子或負(fù)離子。開關(guān)操控金屬感應(yīng)框的電壓是+10V或-10V，并圍繞于電荷收集片的四周。若極性開關(guān)設(shè)定為"+"時，金屬感應(yīng)框的電壓是+10V，則所吸入的正離子就會被金屬感應(yīng)框所排斥而集中到中央的電荷收集板。而所吸入的負(fù)離子就會被中央的電荷收集板所排斥而集中到四周的金屬感應(yīng)框。在此狀況，電荷收集板僅偵測正離子而無測量到負(fù)離子。同樣地，當(dāng)極性開關(guān)設(shè)定為"－"時，電荷收集板僅偵測負(fù)離子。<div>　　負(fù)離子測試儀操作方法：</div><div>　　1. 連接儀器的接地的地線；</div><div>　　2. 選擇確定POLARITY在+或者－，確定測定正、或者負(fù)離子；</div><div>　　3. 直立儀器，旋鈕在OFF，按鈕的開關(guān)放在STANDBY，然后旋鈕至19.99；</div><div>　　4. 熱機1分鐘，按下按鈕到RE-ZERO，并且保持3-5秒；</div><div>　　5. 當(dāng)顯示的數(shù)字在-0.01至0.01時，就已經(jīng)穩(wěn)定；如果不穩(wěn)定，需要重新調(diào)零；</div><div>　　6. 測量時，按鈕的開關(guān)放在MEASURE就開始測量；</div><div>　　7. 根據(jù)顯示的數(shù)值的大小，旋鈕可以跟蹤旋至不同的量程范圍上；如果在測量過程顯示出現(xiàn)數(shù)字1，則應(yīng)調(diào)節(jié)到大一量程范圍檔位；</div><div>　　8. 顯示穩(wěn)定后再讀數(shù)，用讀數(shù)的數(shù)字乘以1000就是該測量區(qū)域的正或者負(fù)離子個數(shù)的含量（離子個/CM3）。</div><div>　　負(fù)離子測試儀使用注意事項:</div><div>　　1、測量時，要保持空氣相對靜止，不能流動，同時，測量人員應(yīng)遠(yuǎn)離一個手臂左右；</div><div>　　2、電池電壓低于7.5V，應(yīng)更換電池。待機情況下（STANDBY），電池使用時間為10小時；測量情況下（MEASURE），電池使用時間為2小時。否則，測量的結(jié)果將產(chǎn)生很大的誤差;</div><div>　　3、不要連續(xù)長時間開機測定；</div><div>　　4、讀數(shù)要取出現(xiàn)的數(shù)值范圍的中間讀數(shù)。</div><div> </div> <div class="mha2zlz0wgq" id="news_sx"><li id="mha2zlz0wgq" class="sx_left">上一篇：<a href="/Article-2576481.html">負(fù)離子濃度檢測儀使用中一定要輕拿輕放</a> <br />下一篇：<a href="/Article-2479306.html">負(fù)離子濃度檢測儀的使用方法</a></li></div> </div> </div> </div> </div> <div id="mha2zlz0wgq" class="clear"></div> <div class="mha2zlz0wgq" id="footer"> <div id="mha2zlz0wgq" class="footernr"> <div id="mha2zlz0wgq" class="footersub1"> <p>工作時間</p> <span>為了避免不必要的等待，敬請注意我們的工作時間。以下是我們的正常工作時間，中國大陸法定節(jié)假日除外。</span><br> <span>工作時間：周一至周六早8:00-晚18:00。周日休息</span> </div> <div id="mha2zlz0wgq" class="footersub2"> <p>服務(wù)宗旨</p> 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