隔膜壓力開關為何能測量特殊介質
隔膜壓力開關中常用的一種是膜片式壓力開關，可以測量腐蝕性、帶結晶、帶黏度等特殊介質的壓力測量儀器儀表。今天小編為您介紹為何隔膜壓力開關可以測量特殊介質。
隔膜壓力開關的內部含有被膜片密封的灌充液，當開始測量介質時，被測介質會直接作用在隔膜膜片上，此時膜片會產生形變，灌充液會將壓力傳遞給彈性元件，彈性元件會產生變形，直接推動開關元件，達到了壓力控制的目的。
通過上述原理可知，被測介質不會與隔膜壓力開關直接接觸，當被測介質是強酸強堿強腐蝕、帶黏度、帶結晶時，隔膜的膜片會有效的阻止特殊介質進入到導壓管內，保證隔膜壓力開關的正常工作。
隔膜壓力開關的膜片材質可以很好的起到防腐防黏的作用，彌補了普通不銹鋼材質易腐蝕的缺陷，是可以適用在特殊環境中的理想化產品。
西安仕樂克控制器制造有限公司 (www.a3025.cn)
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