數顯壓力傳感器

分為 擴散(san)硅壓(ya)力(li)變送器芯體和 電容壓(ya)力(li)變送器芯體。擴散(san)硅壓(ya)力(li)變送器具有工(gong)作可靠、性(xing)能穩定、安裝使用(yong)方便(bian)、體積小、重量輕、性(xing)能價格比高等點，能在(zai)各(ge)種正負壓(ya)力(li)測(ce)量中得到廣泛(fan)應用(yong)。

壓(ya)(ya)(ya)力(li)傳(chuan)(chuan)感器(qi)兩線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)比(bi)較簡單，一(yi)(yi)般客戶都(dou)知道(dao)怎(zen)么接(jie)(jie)線(xian)(xian)(xian)(xian)(xian)(xian)，一(yi)(yi)根線(xian)(xian)(xian)(xian)(xian)(xian)連接(jie)(jie)電(dian)源正極，另(ling)一(yi)(yi)個(ge)(ge)線(xian)(xian)(xian)(xian)(xian)(xian)也(ye)就是(shi)(shi)(shi)信號線(xian)(xian)(xian)(xian)(xian)(xian)經過儀(yi)器(qi)連接(jie)(jie)到電(dian)源負極，這種是(shi)(shi)(shi)的(de)(de)，壓(ya)(ya)(ya)力(li)傳(chuan)(chuan)感器(qi)三線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)是(shi)(shi)(shi)在兩線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)基礎上加(jia)了(le)一(yi)(yi)個(ge)(ge)線(xian)(xian)(xian)(xian)(xian)(xian)，這根線(xian)(xian)(xian)(xian)(xian)(xian)直接(jie)(jie)連接(jie)(jie)到電(dian)源的(de)(de)負極，較兩線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)麻煩一(yi)(yi)點。四線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)壓(ya)(ya)(ya)力(li)傳(chuan)(chuan)感器(qi)肯定是(shi)(shi)(shi)兩個(ge)(ge)電(dian)源輸(shu)入(ru)端，另(ling)外兩個(ge)(ge)是(shi)(shi)(shi)信號輸(shu)出(chu)(chu)端。四線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)的(de)(de)多半(ban)是(shi)(shi)(shi)電(dian)壓(ya)(ya)(ya)輸(shu)出(chu)(chu)而不是(shi)(shi)(shi)4~20mA輸(shu)出(chu)(chu)，4~20mA的(de)(de)叫壓(ya)(ya)(ya)力(li)變送器(qi)，多數(shu)做成(cheng)兩線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)的(de)(de)。壓(ya)(ya)(ya)力(li)傳(chuan)(chuan)感器(qi)的(de)(de)信號輸(shu)出(chu)(chu)有(you)些是(shi)(shi)(shi)沒有(you)經過放大的(de)(de)，滿量(liang)程輸(shu)出(chu)(chu)只有(you)幾十毫伏，而有(you)些壓(ya)(ya)(ya)力(li)傳(chuan)(chuan)感器(qi)在內部有(you)放大電(dian)路，滿量(liang)程輸(shu)出(chu)(chu)為0~2V。至于(yu)怎(zen)么接(jie)(jie)到顯示(shi)儀(yi)表，要(yao)看儀(yi)表的(de)(de)量(liang)程是(shi)(shi)(shi)多大，如果有(you)和(he)輸(shu)出(chu)(chu)信號相(xiang)適(shi)應的(de)(de)檔位，就可以(yi)直接(jie)(jie)測(ce)量(liang)，否則要(yao)加(jia)信號調整(zheng)電(dian)路。五(wu)線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)壓(ya)(ya)(ya)力(li)傳(chuan)(chuan)感器(qi)與四線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)相(xiang)差(cha)不大，市面(mian)上五(wu)線(xian)(xian)(xian)(xian)(xian)(xian)制(zhi)的(de)(de)傳(chuan)(chuan)感器(qi)也(ye)比(bi)較少

數顯壓力傳感器優點

具(ju)有(you)強大的(de)(de)界(jie)面操作(zuo)(zuo)功能，數(shu)字表(biao)頭可(ke)以顯示(shi)壓力(li)、百分比和電流，及0～100%模擬指示(shi)，可(ke)以就(jiu)地顯示(shi)極(ji)大的(de)(de)方便(bian)(bian)了現(xian)場(chang)作(zuo)(zuo)業，按鍵操作(zuo)(zuo)能方便(bian)(bian)地在無(wu)標準壓力(li)源(yuan)的(de)(de)情況下完成零點遷移、量程設(she)定、阻尼設(she)定等基(ji)本參數(shu)的(de)(de)設(she)置，極(ji)大的(de)(de)方便(bian)(bian)了現(xian)場(chang)調試。另外其(qi)多功能的(de)(de)信號(hao)輸出解(jie)決(jue)了信號(hao)遠程采集(ji)和操控(kong)的(de)(de)煩惱，信號(hao)可(ke)以遠傳長達幾(ji)百米。

使用方法

壓電式壓力傳感器：

壓(ya)電(dian)(dian)(dian)(dian)效(xiao)應是壓(ya)電(dian)(dian)(dian)(dian)傳(chuan)感器的(de)主要工作原理(li)，壓(ya)電(dian)(dian)(dian)(dian)傳(chuan)感器不能用于(yu)靜態測量，因為經過(guo)外力(li)作用后的(de)電(dian)(dian)(dian)(dian)荷，只有在(zai)回(hui)路(lu)具(ju)有無限(xian)大的(de)輸入阻抗(kang)時才得到(dao)保存(cun)。實際的(de)情況不是這樣的(de)，所(suo)以(yi)這決定了壓(ya)電(dian)(dian)(dian)(dian)傳(chuan)感器只能夠(gou)測量動(dong)態的(de)應力(li)。

以真空(kong)為標準表(biao)示的壓力大小(xiao)。

接線方法
傳感器的接線一向是客戶采購過程咨詢得多的問題之一，很多客戶都不知道傳感器如何連線，其實各種傳感器的接線方式基本都是一樣的，壓力傳感器一般有兩線制、三線制、四線制，有的還有五線制的。
壓力傳感器兩(liang)線(xian)制比較簡單，一(yi)(yi)般客戶都知道怎么接(jie)(jie)(jie)線(xian)，一(yi)(yi)根線(xian)連接(jie)(jie)(jie)電(dian)源正極(ji)(ji)，另一(yi)(yi)個線(xian)也就是信號(hao)線(xian)經(jing)過儀器連接(jie)(jie)(jie)到(dao)電(dian)源負極(ji)(ji)，這種的，壓力傳感器三線(xian)制是在兩(liang)線(xian)制基礎上加了一(yi)(yi)個線(xian)，這根線(xian)直接(jie)(jie)(jie)連接(jie)(jie)(jie)到(dao)電(dian)源的負極(ji)(ji)，較兩(liang)線(xian)制麻煩一(yi)(yi)點。