分享電子式壓力開關和機械式壓力開關的區別
采用(yong)高精(jing)度、高穩(wen)定(ding)性(xing)能(neng)的壓(ya)力(li)傳感器和變(bian)送電路,再經專用(yong) CPU模塊化信號(hao)處(chu)理技術,實現(xian)(xian)對介質壓(ya)力(li)信號(hao)的檢測(ce)(ce)(ce)、顯示、報警和控(kong)制(zhi)信號(hao)輸出。壓(ya)力(li)開(kai)關(guan)可以廣泛用(yong)于石油、化工(gong)、冶金(jin)、電力(li)、供(gong)水等領域中對各(ge)種(zhong)氣體、液體的表壓(ya)、絕壓(ya)的測(ce)(ce)(ce)量控(kong)制(zhi),是工(gong)業現(xian)(xian)場理想的智能(neng)化測(ce)(ce)(ce)控(kong)儀表。
作(zuo)為壓(ya)(ya)(ya)力(li)(li)(li)量(liang)的(de)控制(zhi)方式(shi)(shi)之(zhi)一的(de)壓(ya)(ya)(ya)力(li)(li)(li)開(kai)關(guan)已不僅(jin)僅(jin)局(ju)限于對(dui)某一點壓(ya)(ya)(ya)力(li)(li)(li)的(de)開(kai)閉式(shi)(shi)兩(liang)態控制(zhi),而(er)是在開(kai)關(guan)控制(zhi)的(de)基礎上要同(tong)時能夠實現分辨壓(ya)(ya)(ya)力(li)(li)(li)大小,對(dui)控制(zhi)點連續設(she)定(ding),進行遠距離信(xin)號(hao)傳(chuan)輸等功(gong)能,因此電子壓(ya)(ya)(ya)力(li)(li)(li)開(kai)關(guan)代替(ti)各種機械式(shi)(shi)壓(ya)(ya)(ya)力(li)(li)(li)開(kai)關(guan)已逐漸(jian)成為應用的(de)主流。
為方便客戶對壓力開關的選擇,現對其二者在工作原理、功能及特性等方面的區別進行比較分析。
分享電子式壓力開關和機械式壓力開關的區別:
機(ji)械式壓力(li)開關(guan)工作原理:為純機(ji)械形變導致微動(dong)開關(guan)動(dong)作。當壓力(li)增加時,作用在(zai)不同的傳感壓力(li)元器件(jian)(膜片、波紋(wen)管、活(huo)塞)產生形變,將向上移動(dong),通過欄桿彈(dan)簧等機(ji)械結構,最終啟動(dong)上端的微動(dong)開關(guan),使(shi)電信號輸出(chu)。
精度(du)(精度(du)一般在(zai)±5%左右(you))
信號輸出:機械形(xing)變來轉換開(kai)關(guan)量
壓(ya)(ya)力點:壓(ya)(ya)力點不可調節
顯示:無(wu)顯示功能
相應(ying)速(su)度:遲滯大、響應(ying)慢(彈(dan)簧形變)
電(dian)(dian)(dian)子式壓(ya)(ya)(ya)(ya)力(li)(li)開關(guan):主要采(cai)用(yong)壓(ya)(ya)(ya)(ya)力(li)(li)傳(chuan)感器(qi)進(jin)行壓(ya)(ya)(ya)(ya)力(li)(li)采(cai)樣,通過(guo)(guo)壓(ya)(ya)(ya)(ya)力(li)(li)傳(chuan)感器(qi)直(zhi)接將(jiang)非電(dian)(dian)(dian)量----壓(ya)(ya)(ya)(ya)力(li)(li)轉(zhuan)換為可(ke)直(zhi)接測量的電(dian)(dian)(dian)量―--電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)或(huo)電(dian)(dian)(dian)流,再(zai)通過(guo)(guo)信號調理電(dian)(dian)(dian)路對(dui)傳(chuan)感器(qi)信號進(jin)行放大和歸(gui)整處理,zui后通過(guo)(guo)比(bi)較(jiao)電(dian)(dian)(dian)路,使得該(gai)器(qi)件在所(suo)設定的壓(ya)(ya)(ya)(ya)力(li)(li)門限(xian)上(shang),輸(shu)出電(dian)(dian)(dian)平(ping)是某一邏輯狀態,這個邏輯電(dian)(dian)(dian)平(ping)可(ke)輸(shu)入到(dao)微控制器(qi),驅動(dong)后部電(dian)(dian)(dian)路或(huo)控制電(dian)(dian)(dian)開關(guan)。用(yong)戶可(ke)以通過(guo)(guo)設定電(dian)(dian)(dian)平(ping)轉(zhuan)換門限(xian)來決(jue)定壓(ya)(ya)(ya)(ya)力(li)(li)開關(guan)的動(dong)作的壓(ya)(ya)(ya)(ya)力(li)(li)值。
精度(du):內置精密(mi)的壓力變送器,精度(du)高(gao)(精度(du)一般(ban)在(zai)±0.5%F.S,高(gao)則達(da)±0.2%F.S)
信號輸(shu)出(chu):輸(shu)出(chu)信號穩定
壓力點:調節(jie)無死區(qu),可(ke)任意設定繼(ji)電器動作(zuo)壓力點
顯(xian)示:數(shu)字顯(xian)示功(gong)能,實(shi)時顯(xian)示設定壓力值和當(dang)前壓力值
相(xiang)應速(su)度:遲滯小、響應快(kuai)
應用領域:
氣(qi)體力學到液(ye)壓領(ling)域、精密(mi)控制領(ling)域、壓力自(zi)動控制領(ling)域,電(dian)子式壓力開(kai)關(guan)可替代大部分(fen)使用機(ji)械(xie)壓力開(kai)關(guan)、液(ye)位開(kai)關(guan)、壓力繼電(dian)器、電(dian)接點(dian)壓力表的場(chang)所。
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