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如何維修電導率儀的故障

更新時(shí)間:2011-11-22      點(diǎn)擊次數:615

 
電導率儀的常見(jiàn)故障有哪些?應該如何去解決???

  

  電導率儀電橋部分的故障其表現是不論用高周檔還是低周檔在測定時(shí)旋轉讀數鈕或倍率鈕時(shí)指示器均閃動(dòng)不穩,或根本找不到平衡點(diǎn)。

  

  1.先檢查橋路中的電極系統將電極取下接人約1000歐姆的已知電阻,若能測出約1000歐姆阻值則問(wèn)題就在電極或接線(xiàn)。更換或修復電極系統即可。若不能測得可用下法繼續檢查。

  
     2.倍率鈕部分多因內部波段開(kāi)關(guān)錯位或接觸不良,可用棉花等吸取少量無(wú)水乙醇或三氯乙烯等擦凈并復位即可。

 
 3.讀數鈕部分有時(shí)讀數鈕內部的滑線(xiàn)電阻接觸不良,可用干凈綢布等擦凈接觸點(diǎn),使各處能接觸良好即可。
 

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