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class="nymiddlezty"> <div id="gcjdygeso" class="mianbao">您現在的位置：<a href="/">首頁(yè)</a> >> <a href="/article.html">技術(shù)文章</a> >> 負離子測試儀的操作方法和使用注意事項</div> <div id="gcjdygeso" class="about_con"> <div id="gcjdygeso" class="newstit">負離子測試儀的操作方法和使用注意事項</div> <div id="gcjdygeso" class="newstime"> <span id="gcjdygeso" class="skim"><em>瀏覽次數：</em>2030</span><span id="gcjdygeso" class="skimtim"><em>發(fā)布日期：</em>2021-01-19 </span> </div> 　　負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(jìn)入進(jìn)氣口，再由排氣口排出的）進(jìn)行測量。不論正離子或負離子（依照儀器所設定的極性）都是由這快速的空氣流所帶入儀器內部，而聚集于電荷收集片上。電荷收集板上所測量到的數量（于儀器確實(shí)接地，對地電阻大于10GΩ時(shí)所測得的電壓），就是每秒鐘所感應到的電荷量。極性開(kāi)關(guān)決定測量正離子或負離子。開(kāi)關(guān)操控金屬感應框的電壓是+10V或-10V，并圍繞于電荷收集片的四周。若極性開(kāi)關(guān)設定為"+"時(shí)，金屬感應框的電壓是+10V，則所吸入的正離子就會(huì )被金屬感應框所排斥而集中到中央的電荷收集板。而所吸入的負離子就會(huì )被中央的電荷收集板所排斥而集中到四周的金屬感應框。在此狀況，電荷收集板僅偵測正離子而無(wú)測量到負離子。同樣地，當極性開(kāi)關(guān)設定為"－"時(shí)，電荷收集板僅偵測負離子。<div>　　負離子測試儀操作方法：</div><div>　　1. 連接儀器的接地的地線(xiàn)；</div><div>　　2. 選擇確定POLARITY在+或者－，確定測定正、或者負離子；</div><div>　　3. 直立儀器，旋鈕在OFF，按鈕的開(kāi)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. 當顯示的數字在-0.01至0.01時(shí)，就已經(jīng)穩定；如果不穩定，需要重新調零；</div><div>　　6. 測量時(shí)，按鈕的開(kāi)關(guān)放在MEASURE就開(kāi)始測量；</div><div>　　7. 根據顯示的數值的大小，旋鈕可以跟蹤旋至不同的量程范圍上；如果在測量過(guò)程顯示出現數字1，則應調節到大一量程范圍檔位；</div><div>　　8. 顯示穩定后再讀數，用讀數的數字乘以1000就是該測量區域的正或者負離子個(gè)數的含量（離子個(gè)/CM3）。</div><div>　　負離子測試儀使用注意事項:</div><div>　　1、測量時(shí)，要保持空氣相對靜止，不能流動(dòng)，同時(shí)，測量人員應遠離一個(gè)手臂左右；</div><div>　　2、電池電壓低于7.5V，應更換電池。待機情況下（STANDBY），電池使用時(shí)間為10小時(shí)；測量情況下（MEASURE），電池使用時(shí)間為2小時(shí)。否則，測量的結果將產(chǎn)生很大的誤差;</div><div>　　3、不要連續長(cháng)時(shí)間開(kāi)機測定；</div><div>　　4、讀數要取出現的數值范圍的中間讀數。</div><div> </div> <div class="gcjdygeso" id="news_sx"><li id="gcjdygeso" class="sx_left">上一篇：<a href="/Article-2576481.html">負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">負離子濃度檢測儀的使用方法</a></li></div> </div> </div> </div> </div> <div id="gcjdygeso" class="clear"></div> <div class="gcjdygeso" id="footer"> 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