差壓壓力開關的校驗方法
上期文章中介紹了普通壓力開關的校驗方法，本期由小編為大家簡單介紹下差壓壓力開關的校驗方法。
差壓壓力開關的校驗與普通壓力開關的校驗原理類似，都需要利用到壓力校準器，并準備好校驗記錄單。將壓力校準器與差壓壓力開關的高壓端與低壓端緊密連接，然后施加壓力，為了避免壓力的過沖或者回程，需要緩慢而平穩的施加壓力，直到設定點動作，然后記錄下設定點動作值，隨后緩慢平穩的降壓，直到設定點再次動作時記錄下設定點的恢復值，然后關閉壓力校準器與差壓開關的閥門，耐壓幾分鐘應無泄露。
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