一、智能壓力變送器的定義
關于智(zhi)能壓(ya)(ya)力(li)(li)變(bian)送(song)(song)器的定義其實一(yi)直不是(shi)非(fei)常的明(ming)確,有的觀點(dian)認為,智(zhi)能壓(ya)(ya)力(li)(li)變(bian)送(song)(song)器是(shi)要輸出(chu)帶HART協(xie)議的;也有觀點(dian)認為,具備可調節的壓(ya)(ya)力(li)(li)測量范圍的壓(ya)(ya)力(li)(li)變(bian)送(song)(song)器即可算(suan)作是(shi)智(zhi)能壓(ya)(ya)力(li)(li)變(bian)送(song)(song)器,其實這些觀點(dian)都是(shi)正確的。
一般認為,智能(neng)(neng)壓(ya)力變送(song)器(qi)(qi)是適用了微處(chu)理(li)器(qi)(qi)對采集到的信號進行處(chu)理(li)的壓(ya)力變送(song)器(qi)(qi),微處(chu)理(li)器(qi)(qi)的使(shi)(shi)用使(shi)(shi)得智能(neng)(neng)壓(ya)力變送(song)器(qi)(qi)可以通過(guo)邏輯運算實(shi)現一些(xie)簡(jian)單(dan)電(dian)路無法實(shi)現的功能(neng)(neng)。
二、智能壓力變送器和普通壓力變送器區別在哪
智(zhi)能壓(ya)力變送器(qi)和普通壓(ya)力變送器(qi)相比,區別主(zhu)要是在信(xin)號(hao)轉換方(fang)面:
從(cong)信號(hao)(hao)轉換(huan)的角度(du)來(lai)看:壓(ya)(ya)力變(bian)送(song)器是將其他信號(hao)(hao)轉換(huan)成模(mo)擬(ni)信號(hao)(hao)輸出到設備上(shang)。智能壓(ya)(ya)力變(bian)送(song)器的信號(hao)(hao)制式是模(mo)擬(ni)、數(shu)字(zi)兼容的,且模(mo)擬(ni)信號(hao)(hao)與數(shu)字(zi)信號(hao)(hao)共用(yong)一(yi)條(tiao)通(tong)道,并用(yong)協議(HART)通(tong)信,簡單來(lai)說是可以通(tong)過(guo)智能壓(ya)(ya)力變(bian)送(song)器中的芯片,監控現(xian)(xian)場或是同上(shang)位機連(lian)接(jie)組成現(xian)(xian)場監控系統(tong)。
另外,在(zai)使用方(fang)面,智能壓(ya)力變送器不去到(dao)現場就可(ke)以獲得現場設備的訊息(xi),并(bing)且可(ke)以將現場壓(ya)力變送器的配置信息(xi)通過傳(chuan)輸,直接保(bao)存至(zhi)在(zai)遠端(duan)的計算機上;普通壓(ya)力變送器則沒有這(zhe)樣的功能。
三、智能壓力變送器好用嗎
現代(dai)工業儀器儀表基(ji)本都(dou)向著智(zhi)能(neng)(neng)化(hua)發展,智(zhi)能(neng)(neng)壓(ya)力(li)變送器無疑是比普(pu)通壓(ya)力(li)變送器更先進的,智(zhi)能(neng)(neng)壓(ya)力(li)變送器的優勢主要有:
1、具有總線(xian)通(tong)(tong)信能力(li)。智(zhi)(zhi)能壓力(li)變(bian)送(song)(song)器在與(yu)采用相同通(tong)(tong)信協議的DCS相連(lian)時(shi)可進行直接雙向數字通(tong)(tong)信。智(zhi)(zhi)能壓力(li)變(bian)送(song)(song)器可通(tong)(tong)過手持終端在控制(zhi)室進行遠(yuan)程調節,模擬(ni)智(zhi)(zhi)能壓力(li)變(bian)送(song)(song)器只(zhi)(zhi)能在現(xian)場進行調節。智(zhi)(zhi)能壓力(li)變(bian)送(song)(song)器的零點和量程調整(zheng)是獨立(li)的,只(zhi)(zhi)需一次調整(zheng)即可完(wan)成(cheng)。
2、當智能壓(ya)力(li)變送器發生故(gu)障時,具有自診斷功能。它能在手持終端或DCS屏(ping)幕上正確、清晰(xi)地顯示故(gu)障信息,方便維護(hu)人員(yuan)快速排除故(gu)障,提高系(xi)統的可靠性和可用(yong)性。
3、智能壓力變送器具有PID控制功能。變送器通過軟件增加PID控制功能,使智能壓力變送器具(ju)有(you)控制器功能,并且(qie)具(ju)有(you)PID控制功能的智能壓力(li)變送器可直接(jie)與(yu)執行(xing)機構連接(jie)。
4、智(zhi)能(neng)壓力變(bian)送器(qi)的(de)規格雖然實(shi)際有(you)限,但卻能(neng)做到(dao)量程(cheng)范圍與各不相(xiang)同(tong)的(de)現場(chang)要求一致(zhi),是因為智(zhi)能(neng)壓力變(bian)送器(qi)可(ke)以(yi)通過軟件組態(tai)自行調整量程(cheng)范圍。
5、智能壓(ya)力變(bian)送(song)器一般都有可靠(kao)的(de)溫度補償和靜壓(ya)補償,這是因為其變(bian)送(song)電(dian)路前擁(yong)有大量的(de)信號(hao)處理電(dian)路,對采集(ji)信號(hao)進行補償和去噪,使用(yong)穩定性好(hao)。