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壓力表

數顯壓力表數據不準的原因

發布日期:2022-10-09 點擊率:128

  數顯壓力表出現的常見故障就是數據不準,主要有以下五種原因:
  1、溫度的影響沒有裝設存水彎管,高溫蒸汽或高溫液直接進入彈簧管,除受壓力外,由于溫度的熱脹冷縮使彈簧產生伸長,致使彈簧動作加大,誤差變大。
  2、振動的影響一種是被測氣體、液體或被測機構振動;一種是壓力表內部機構的振動。振動的結果使壓力表齒輪磨損變形,游絲紊亂,指針松動,軸承損壞等,以致壓力表失去準確性,甚至損壞。數顯壓力表常見故障二數顯壓力表指針不指在零位。
  3、彈簧彎管失去彈性(伸直)。
  4、游絲失去彈性和脫落。
  5、三通旋塞的通道,壓力表連管或存水彎管堵塞,使得指針彎曲或卡住

標簽:                                    數顯壓力表

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