自(zi)立(li)式單(dan)座調(tiao)節(jie)閥(fa)用(yong)壓(ya)力傳(chuan)感(gan)器(qi)控(kong)制電(dian)動(dong)調(tiao)節(jie)閥(fa)開(kai)度.傳(chuan)感(gan)器(qi)輸(shu)出(chu)4-20MA. 要求(qiu):設(she)定(ding)壓(ya)力值要(yao)求(qiu)恒定(ding)（可調(tiao)）.壓(ya)力是通過開(kai)啟閥(fa)門(men)的開(kai)度來實現(xian)的。電(dian)動(dong)調(tiao)節(jie)閥(fa)和(he)轉(zhuan)換器件(jian)要獨(du)立(li)的帶通(tong)訊(xun)接口的閥(fa)門(men)有(you)開(kai)關繼電(dian)輸(shu)出(chu)可調(tiao)的。（就(jiu)是開(kai)關到壹定(ding)開(kai)度有(you)繼電(dian)信(xin)號輸(shu)出(chu)）。

ZZYP自(zi)力式壓(ya)力調(tiao)節(jie)閥(fa)是壹種(zhong)無(wu)需外加驅(qu)動(dong)能(neng)源(yuan)，依(yi)靠(kao)被調(tiao)介質自身的壓力為動(dong)力源及(ji)其介質壓力變化(hua)，按(an)預定(ding)設(she)定(ding)設(she)定(ding)值(zhi)，進行自動(dong)調(tiao)節(jie)的節(jie)能(neng)型(xing)控(kong)制(zhi)裝置(zhi)。它集檢測、控制(zhi)、執(zhi)行諸(zhu)多功能於壹閥(fa)，自(zi)成壹個獨(du)立(li)的儀(yi)表(biao)控制(zhi)系(xi)統(tong)。該產(chan)品(pin)由於(yu)無(wu)需外來能(neng)源，產(chan)品(pin)結(jie)構簡(jian)單(dan)，使(shi)用(yong)方(fang)便(bian)，維(wei)護工作量(liang)少等優點(dian)，特(te)別(bie)適用(yong)於(yu)城(cheng)市(shi)供(gong)熱、供(gong)暖(nuan)及無(wu)外界供電(dian)、供(gong)氣(qi)且(qie)又(you)需控(kong)制蒸汽(qi)壓(ya)力的場合(he)。據(ju)國(guo)外報道，城市(shi)供(gong)熱、供(gong)暖(nuan)系(xi)統(tong)采(cai)用(yong)該產(chan)品(pin)，節(jie)能(neng)效(xiao)率比以