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調節弁上の電磁弁の取り付け位置

2015-06-05View Original

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石油化学プラントの安全計装設計規格では、制御バルブ上の電磁弁はバルブポジショナーとアクチュエータの間に取り付けることが求められていますが、その理由は何でしょうか?解く!
Reply #22015-06-05
調整バルブへの空気供給を遮断し、同時に調整バルブ内の計装用空気を抜く。
Reply #32015-06-05
この二つの間に設置しなければ、効果はあるのでしょうか?

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