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當前位置:首頁技術文章smar壓(ya)力變送(song)器和液位變送(song)器區別在(zai)哪(na)

smar壓力變送器和液位變送器區別在哪

更新時間:2024-03-27點擊次數:159

smar壓力變送器和液位變送器區別在哪

壓(ya)力(li)(li)(li)傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)和(he)液(ye)(ye)(ye)位傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)的(de)(de)(de)測(ce)(ce)量原(yuan)理是(shi)(shi)(shi)(shi)(shi)相似的(de)(de)(de),都是(shi)(shi)(shi)(shi)(shi)利用當(dang)傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)投入到(dao)被測(ce)(ce)液(ye)(ye)(ye)體中(zhong)某一深度(du)時,傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)迎(ying)液(ye)(ye)(ye)面(mian)(mian)受到(dao)的(de)(de)(de)壓(ya)力(li)(li)(li)公式為:Ρ=ρ.g.H + Po式中(zhong):P是(shi)(shi)(shi)(shi)(shi)液(ye)(ye)(ye)位計迎(ying)液(ye)(ye)(ye)面(mian)(mian)所(suo)受壓(ya)力(li)(li)(li) ρ是(shi)(shi)(shi)(shi)(shi)被測(ce)(ce)液(ye)(ye)(ye)體密度(du)g是(shi)(shi)(shi)(shi)(shi)重力(li)(li)(li)加速度(du), Po是(shi)(shi)(shi)(shi)(shi)液(ye)(ye)(ye)面(mian)(mian)上大氣壓(ya)H是(shi)(shi)(shi)(shi)(shi)傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)投入液(ye)(ye)(ye)體的(de)(de)(de)深度(du)同時,通(tong)(tong)過(guo)導氣不銹(xiu)鋼將液(ye)(ye)(ye)體的(de)(de)(de)壓(ya)力(li)(li)(li)引入到(dao)傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)的(de)(de)(de)正壓(ya)腔,再將液(ye)(ye)(ye)面(mian)(mian)上的(de)(de)(de)大氣壓(ya)Po與(yu)傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)的(de)(de)(de)負壓(ya)腔相連,以抵消傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)背面(mian)(mian)的(de)(de)(de)Po,使傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)測(ce)(ce)得壓(ya)力(li)(li)(li)為:ρ.g.H,顯然,通(tong)(tong)過(guo)測(ce)(ce)取(qu)壓(ya)力(li)(li)(li)P,可以得到(dao)液(ye)(ye)(ye)位深。只是(shi)(shi)(shi)(shi)(shi)壓(ya)力(li)(li)(li)傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)輸出(chu)是(shi)(shi)(shi)(shi)(shi)是(shi)(shi)(shi)(shi)(shi)壓(ya)力(li)(li)(li)P,而液(ye)(ye)(ye)位傳(chuan)(chuan)(chuan)感(gan)器(qi)(qi)輸出(chu)的(de)(de)(de)是(shi)(shi)(shi)(shi)(shi)深度(du)H。

其次(ci),壓(ya)(ya)力(li)傳(chuan)(chuan)(chuan)感器(qi)(qi)與液(ye)(ye)位(wei)(wei)(wei)傳(chuan)(chuan)(chuan)感器(qi)(qi)的(de)分(fen)(fen)類(lei)不同。壓(ya)(ya)力(li)傳(chuan)(chuan)(chuan)感器(qi)(qi)一般可分(fen)(fen)為應變(bian)片(pian)壓(ya)(ya)力(li)傳(chuan)(chuan)(chuan)感器(qi)(qi)、陶瓷壓(ya)(ya)力(li)傳(chuan)(chuan)(chuan)感器(qi)(qi)、擴散硅壓(ya)(ya)力(li)傳(chuan)(chuan)(chuan)感器(qi)(qi)、藍寶石壓(ya)(ya)力(li)傳(chuan)(chuan)(chuan)感器(qi)(qi)、壓(ya)(ya)電壓(ya)(ya)力(li)傳(chuan)(chuan)(chuan)感器(qi)(qi)。而液(ye)(ye)位(wei)(wei)(wei)傳(chuan)(chuan)(chuan)感器(qi)(qi)一般分(fen)(fen)為浮球式液(ye)(ye)位(wei)(wei)(wei)變(bian)送器(qi)(qi)、浮筒式液(ye)(ye)位(wei)(wei)(wei)變(bian)送器(qi)(qi)、靜壓(ya)(ya)式液(ye)(ye)位(wei)(wei)(wei)變(bian)送器(qi)(qi)。

液位傳(chuan)感器的原理是(shi)什么

用靜壓測(ce)量原理:當液(ye)位變送(song)器投(tou)入(ru)到被測(ce)液(ye)體中(zhong)某一深度時,傳(chuan)感器迎液(ye)面受到的壓強公式為:Ρ = ρ .g.H + Po式中(zhong):

P :變送器迎(ying)液(ye)面所受壓強

ρ:被測液體密度

g :當地重力加速(su)度(du)

Po :液面上大氣壓

H :變送器投入液體的深度

同時(shi),通過導氣(qi)不銹鋼將液體的(de)(de)壓力引入到傳(chuan)感(gan)器(qi)的(de)(de)正(zheng)壓腔(qiang),再將液面上的(de)(de)大氣(qi)壓 Po 與傳(chuan)感(gan)器(qi)的(de)(de)負壓腔(qiang)相連(lian),以(yi)抵消傳(chuan)感(gan)器(qi)背面的(de)(de) Po ,

使(shi)傳感器(qi)測得壓力為:ρ .g.H ,顯然,通過測取壓強 P ,可以得到(dao)液位(wei)深度。

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