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壓(ya)力(li)(li)變送(song)器一(yi)般用(yong)于(yu)工控(kong)自動化中。安裝在需要讀取(qu)壓(ya)力(li)(li)的地方，可能為管道(dao)或者某個(ge)存儲(chu)罐，將氣(qi)體、液體等壓(ya)力(li)(li)信(xin)號轉變為電(dian)流或者電(dian)壓(ya)信(xin)號，這些電(dian)流或者電(dian)壓(ya)信(xin)號將提供給記錄儀、調(diao)(diao)節器、報警器等儀表，從而達到測量、記錄和調(diao)(diao)節的作用(yong)。

      檢查壓(ya)力(li)(li)變(bian)送(song)器(qi)(qi)周圍(wei)有沒有信(xin)號干擾(rao)，如果有盡量(liang)排除，或(huo)讓傳(chuan)感器(qi)(qi)屏蔽(bi)線(xian)與(yu)金屬外殼(ke)相連(lian)，增強能力(li)(li)。要清(qing)洗安裝(zhuang)(zhuang)孔(kong)，保證安裝(zhuang)(zhuang)孔(kong)的(de)(de)清(qing)潔.防(fang)止變(bian)送(song)器(qi)(qi)與(yu)腐蝕性(xing)或(huo)過熱的(de)(de)介質接觸(chu)。接線(xian)時，將電(dian)纜穿(chuan)過防(fang)水接頭(tou)或(huo)繞(rao)(附件)性(xing)管(guan)并擰緊密封螺帽(mao)，以防(fang)雨水等通過電(dian)纜滲漏進變(bian)送(song)器(qi)(qi)殼(ke)體內。測量(liang)氣體壓(ya)力(li)(li)時，取壓(ya)口(kou)應開在流(liu)程(cheng)管(guan)道(dao)頂(ding)端，并且(qie)變(bian)送(song)器(qi)(qi)也(ye)應安裝(zhuang)(zhuang)在流(liu)程(cheng)管(guan)道(dao)上部，以便積累的(de)(de)液體容易注(zhu)入流(liu)程(cheng)管(guan)道(dao)中。測量(liang)液體壓(ya)力(li)(li)時，取壓(ya)口(kou)應開在流(liu)程(cheng)管(guan)道(dao)側面，以沉淀積渣。壓(ya)力(li)(li)變(bian)送(song)器(qi)(qi)上不能使用高36V的(de)(de)電(dian)壓(ya)，容易導致(zhi)損壞。

冬(dong)季發生冰(bing)凍(dong)(dong)(dong)時，安(an)裝在(zai)室外的(de)(de)變(bian)送(song)(song)器(qi)(qi)(qi)(qi)必(bi)需采取防(fang)凍(dong)(dong)(dong)措施，預防(fang)壓口內(nei)的(de)(de)液(ye)體因(yin)(yin)結冰(bing)體積膨(peng)脹，導至傳(chuan)感器(qi)(qi)(qi)(qi)損壞。測(ce)量蒸(zheng)汽或(huo)其它高溫(wen)(wen)介質時，需接加(jia)緩沖(chong)管(guan)(盤管(guan))等(deng)冷凝(ning)器(qi)(qi)(qi)(qi)，不應使變(bian)送(song)(song)器(qi)(qi)(qi)(qi)的(de)(de)工作溫(wen)(wen)度超出。而且緩沖(chong)管(guan)需要(yao)注入適(shi)量水，防(fang)止(zhi)過熱(re)蒸(zheng)汽與變(bian)送(song)(song)器(qi)(qi)(qi)(qi)接觸。而且緩沖(chong)散熱(re)管(guan)不能漏氣(qi)。測(ce)量液(ye)體壓力時，變(bian)送(song)(song)器(qi)(qi)(qi)(qi)的(de)(de)安(an)避免(mian)液(ye)體的(de)(de)沖(chong)擊(ji)(水錘裝位置應現象)，以(yi)免(mian)傳(chuan)感器(qi)(qi)(qi)(qi)過壓損壞。導壓管(guan)應安(an)裝在(zai)溫(wen)(wen)度波動(dong)小的(de)(de)地(di)方。防(fang)止(zhi)渣(zha)滓在(zai)導管(guan)內(nei)沉積。壓力變(bian)送(song)(song)器(qi)(qi)(qi)(qi)測(ce)量的(de)(de)介質不能冷凍(dong)(dong)(dong)結冰(bing)，一旦(dan)結冰(bing)，會容易損壞膜(mo)片(pian)(pian)，因(yin)(yin)為膜(mo)片(pian)(pian)一般都(dou)很薄。