差壓壓力開(kāi)關(guān)的常見(jiàn)故障解析
來(lái)源:編輯YY 時(shí)間:2014-07-03 14:59 點(diǎn)擊:次
差壓壓力開(kāi)關(guān)目前也是工業(yè)領(lǐng)域中使用較頻繁的壓力開(kāi)關(guān)產(chǎn)品,使用中也難免不會(huì)出現(xiàn)故障,本期為大家簡(jiǎn)單解析差壓壓力開(kāi)關(guān)的故障緣由何在。
1.差壓壓力開(kāi)關(guān)的信號(hào)無(wú)輸出和輸出不穩(wěn)定。出現(xiàn)此故障可能是壓力源本身的壓力不穩(wěn)定或者差壓壓力開(kāi)關(guān)抗干擾能力變?nèi)鯇?dǎo)致。
2.測(cè)量結(jié)果誤差較大。出現(xiàn)這種情況的原因比較多,主要有:
a.安裝時(shí)沒(méi)有嚴(yán)格按照規(guī)程安裝,參數(shù)和環(huán)境不符合技術(shù)要求;
b.取壓點(diǎn)的不合理,內(nèi)部引壓管出現(xiàn)堵塞或者泄露,殘存沉積物,導(dǎo)致測(cè)量死區(qū);
c.接線不正確,差壓壓力開(kāi)關(guān)表頭與儀表接線端子連接處接觸不良。
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