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壓力表

耐震壓力表安裝時哪些方面需要注意?

發布日期:2022-10-09 點擊率:49

    耐震壓力表適合在環境劇烈的場所,一般的廣泛應用在化工,石油,礦山等部門,那么耐震壓力表安裝時哪些方面需要注意?

    安裝注意

    1.儀表使用環境溫度為-40~70℃,相對濕耐震壓力表型號度不大于80%,如偏離正常使壓力表生產廠家用溫度20±5℃時,須計入溫度附加誤差。

    2.儀表必須垂直安裝,力求與電接點壓力表價格測定點保持同一水平,如相差過高計入液柱所引起的附加誤差,測量氣體時可不必考慮。安裝時將表殼后部防爆口阻塞,以免影響防爆性能。

    3.儀表正常使用的測量范圍:在靜壓下不超過測量上限的3/4,在波動下不應超過測量上限的2/3。在上述兩種壓力情況下大壓力表測量最低都不應低于下限的1/3,測量真空時真空部分全部使用。

    4.使用時如遇到儀表指針失靈或內部機件松動、不能正常工作等故障時應進行檢修,或聯系生產廠家維修。

    5.儀表應避免震動和碰撞,以免損壞。

    壓力儀表的調校

    耐震壓力表的安裝需要注意什么?采用活塞式壓力計來做校驗工具,將被校壓力儀表和標準壓力儀表以相同的壓力比較它們的指示數值,所選擇標準表的絕對誤差一般應小于被校儀表絕對誤差的1/3,所以誤差可以忽略。認為標準表的讀數就是真實壓力的數值。如果被校儀表對于標準儀表的讀數誤差不大于被校儀表的規定誤差,則認為被校儀表合格。

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