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導致磁電式儀表指針不回零的原因

發布日期:2022-05-30 點擊率:7

                         導致磁電式儀表指針不回零的原因及檢修方法如下:

  (1)儀表指針彎曲變形,與刻度盤或玻璃面相擦。可將表殼拆開,平直表針。

  (2)表面調整螺釘調整不當。可將表面調整螺釘調到適當位置,或更換州整螺釘。

  (3)軸尖氧化生銹、磨損、軸尖座松動,錐孔磨損、過臟,軸泵松動。可將儀表拆來,對各相關部件用無水酒精徹底進行清洗,對軸尖要用油石修磨,用氧化鉻膏拋光后再清洗,然后仔細進行調整,對相關軸尖進行調整,必要時應重換新件。

  (4)游絲焊片與軸承螺釘有磨損,游絲內圈與軸不同心,游絲平面翹起與平衡錘有摩擦,游絲過臟,游絲過載產生彈性疲勞。對此,對彈性差的游絲進行清洗、調整、校正,必要時應重換新件。

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