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差壓變送器的(de)使(shi)用(yong)範(fan)圍(wei)十(shi)分(fen)廣(guang)泛(fan)，因(yin)為(wei)類(lei)型(xing)眾(zhong)多(duo)所(suo)以(yi)差(cha)壓(ya)變(bian)送(song)器(qi)可(ke)以(yi)使(shi)用(yong)很(hen)多(duo)環(huan)境(jing)，下(xia)麵(mian)我(wo)們(men)來(lai)為(wei)大(da)家(jia)介(jie)紹(shao)一(yi)下(xia)關(guan)於(yu)差(cha)壓(ya)變(bian)送(song)器(qi)原(yuan)理(li)及(ji)結(jie)構(gou)的(de)知(zhi)識(shi)。
普通型變送器的測量膜盒為一個，它直接感受被測介質的壓力和差壓；隔離型變送器的測量膜盒接受到的是一種穩定液（一般為矽油）的(de)壓(ya)力(li)，而(er)這(zhe)種(zhong)穩(wen)定(ding)液(ye)是(shi)被(bei)密(mi)封(feng)在(zai)兩(liang)個(ge)膜(mo)片(pian)中(zhong)間(jian)，接(jie)受(shou)被(bei)測(ce)壓(ya)力(li)的(de)膜(mo)片(pian)為(wei)外(wai)膜(mo)片(pian)。原(yuan)普(pu)通(tong)型(xing)膜(mo)盒(he)的(de)膜(mo)片(pian)為(wei)內(nei)膜(mo)片(pian)，當(dang)外(wai)膜(mo)片(pian)上(shang)接(jie)受(shou)壓(ya)力(li)信(xin)號(hao)時(shi)通(tong)過(guo)矽(gui)油(you)的(de)傳(chuan)遞(di)原(yuan)封(feng)不(bu)動(dong)的(de)將(jiang)外(wai)膜(mo)片(pian)的(de)壓(ya)力(li)傳(chuan)遞(di)到(dao)了(le)普(pu)通(tong)膜(mo)盒(he)上(shang)，測(ce)出(chu)了(le)外(wai)膜(mo)片(pian)所(suo)感(gan)受(shou)的(de)壓(ya)力(li)。
gelixingbiansongqiyoubeichengzuofalanshianzhuang，jutidejigouyuanlishizaibeiceshebeishangkaikoujiafalanshibiansongqi，anzhuanghoutadeganyingmopianshishebeibideyibufen，zheyangtabuhuiquchubeicejiezhi，zuidadeyoudianjiushibuhuizaochengjiejingdusai。biansongqideceliangjiezhiyibanfeichangdeteshu，henrongyichuxianbeicejiezhizailikaiceliangshebeihouchanshengjiejing，ruguoshishiyongputongxingbiansongqi，zexuyaoquchujiezhi，zheyanghenrongyidaozhidaoyaguanhemoheshidusaicongeryingxiangzhengchanggongzuo，yincizheshihoujiuxuyaoxuanzegelixingbiansongqi。
不(bu)同(tong)類(lei)型(xing)的(de)差(cha)壓(ya)變(bian)送(song)器(qi)的(de)結(jie)構(gou)原(yuan)理(li)有(you)所(suo)差(cha)別(bie)，但(dan)整(zheng)體(ti)來(lai)說(shuo)還(hai)是(shi)沒(mei)有(you)什(shen)麼(me)大(da)的(de)變(bian)化(hua)的(de)。關(guan)於(yu)隔(ge)離(li)型(xing)變(bian)送(song)器(qi)的(de)應(ying)用(yong)似(si)乎(hu)更(geng)比(bi)較(jiao)多(duo)些(xie)。常(chang)見(jian)的(de)隔(ge)離(li)型(xing)變(bian)送(song)器(qi)有(you)遠(yuan)傳(chuan)型(xing)和(he)一(yi)體(ti)型(xing)兩(liang)種(zhong)。隔(ge)離(li)型(xing)壓(ya)力(li)差(cha)壓(ya)變(bian)送(song)器(qi)的(de)製(zhi)作(zuo)工(gong)藝(yi)比(bi)較(jiao)複(fu)雜(za)，材(cai)質(zhi)的(de)要(yao)求(qiu)也(ye)很(hen)高(gao)，相(xiang)比(bi)較(jiao)之(zhi)下(xia)它(ta)的(de)價(jia)格(ge)也(ye)教(jiao)普(pu)通(tong)型(xing)變(bian)送(song)器(qi)高(gao)。
差壓變送器的種類很多，比如，力學變送器常用的就有：dianzuyingbianpianchayabiansongqi，yazushichayabiansongqi，dianrongshichayabiansongqi，bandaotiyingbianpianchayabiansongqidengqibazhong，qizhongyingyongfanweizuiguang，jiagejiaodi，jingzhunduquexiangduijiaogaodejiushiyazushichayabiansongqi。
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