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高低溫試驗箱

高低溫試驗箱不升溫的根本原因

發布日期:2022-05-30 點擊率:106

  1、首先第一判斷應該是發熱管,可以用萬用表調整至歐姆檔位測量發熱管兩端的電阻值,看看是否斷路或有漏電現象!
  2、其次應該檢查控制發熱管固態繼電器的IO板或PLC,調整萬用表至直流檔位,測量其直流電壓輸出范圍應該在DC3-32v,若無說明IO板或PLC故障!
  3、然后應該是檢查控制發熱管的交流接觸器線圈,供電電壓是否正常,是夠正常吸合。
  4、檢查發熱管回路上的保險絲或空氣短路開關是否短路或跳閘
  5、最后一點也是最容易忽視的一點,就是高低溫試驗箱送風系統,一般在設備操作室后部,看看循環風機是否正常運轉,風輪是否完好。

標簽:                                    高低溫試驗箱


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