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差壓開關(guān)的工作原理
差壓開關(guān)主要是利用兩條管道的發(fā)生的壓差來發(fā)出訊號。差壓開關(guān)內(nèi)部有高壓端和低壓端，分別由兩片密封膜片和一片感差壓膜片密封。當(dāng)設(shè)備運(yùn)行時(shí)，高壓和低壓會相對應(yīng)的進(jìn)入到高壓腔和低壓腔，讓差壓開關(guān)本身感受到的差值，導(dǎo)致彈性元件形變，感應(yīng)器內(nèi)碟片瞬時(shí)發(fā)生移動，通過連接導(dǎo)桿推動開關(guān)接頭接通或斷開設(shè)備。差壓開關(guān)可分為波紋管式差壓開關(guān)和膜片式差壓開關(guān)。
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