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計装弁のアクチュエータに故障が発生すると、どのような現象が現れますか?

2015-06-30View Original

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計器バルブのアクチュエータに故障が発生した場合、バルブはどのような動作を示すのでしょうか?
Reply #22015-06-30
バルブの信号が不正確で、中央制御装置で設定された位置と一致しない。そのためバルブが詰まり、信号が正常に作動しなくなる
Reply #32015-07-02
バルブが固着し、バルブポジショナーが上下に振動するため、プロセス媒体の流量も上下に変動する

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