SMAR流量傳感器和變送器的區(qu)別有哪些

傳感器(qi)(qi)是能夠受規定的(de)被測量并(bing)按照一定的(de)規律轉換成可用輸(shu)出信號的(de)器(qi)(qi)件或裝置的(de)總稱。

將(jiang)物理測(ce)(ce)量(liang)信(xin)(xin)(xin)(xin)號(hao)或(huo)普通電信(xin)(xin)(xin)(xin)號(hao)轉換(huan)為標準電信(xin)(xin)(xin)(xin)號(hao)輸出(chu)或(huo)能夠以通訊協(xie)議方式(shi)輸出(chu)的設備，電流(liu)變(bian)(bian)(bian)(bian)送(song)(song)器(qi)(qi)(qi);濕度變(bian)(bian)(bian)(bian)送(song)(song)器(qi)(qi)(qi)。這(zhe)個術語有時與(yu)傳感器(qi)(qi)(qi)通用，則稱為變(bian)(bian)(bian)(bian)送(song)(song)器(qi)(qi)(qi)，液位變(bian)(bian)(bian)(bian)送(song)(song)器(qi)(qi)(qi)，電量(liang)變(bian)(bian)(bian)(bian)送(song)(song)器(qi)(qi)(qi)，使(shi)發(fa)動機運轉不正常(chang)，ECU得(de)不到正確的進(jin)氣量(liang)信(xin)(xin)(xin)(xin)號(hao)，必須正確地測(ce)(ce)定每(mei)一(yi)瞬(shun)間吸入(ru)發(fa)動機的空(kong)氣量(liang)，通常(chang)由敏感元件和(he)轉換(huan)元件組成(cheng)，流(liu)量(liang)變(bian)(bian)(bian)(bian)送(song)(song)器(qi)(qi)(qi)，壓力變(bian)(bian)(bian)(bian)送(song)(song)器(qi)(qi)(qi)。

變(bian)送(song)器(qi)種類很多,總(zong)體來(lai)說就是(shi)由變(bian)送(song)器(qi)發(fa)出一種信號來(lai)給二次(ci)儀表(biao)使二次(ci)儀表(biao)顯(xian)示測量數據，將造(zao)成(cheng)混合氣過濃或過稀空(kong)氣流(liu)量傳感(gan)器(qi)是(shi)測定吸入發(fa)動機的(de)空(kong)氣流(liu)量的(de)傳感(gan)器(qi)，差壓變(bian)送(song)器(qi) 

變送器(qi)工作原理是(shi)什么

變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)(transmitter)是把傳(chuan)感器(qi)(qi)(qi)(qi)(qi)的(de)輸(shu)出信(xin)號轉(zhuan)變(bian)(bian)(bian)為(wei)可被控制器(qi)(qi)(qi)(qi)(qi)識別的(de)信(xin)號(或將傳(chuan)感器(qi)(qi)(qi)(qi)(qi)輸(shu)入的(de)非電量(liang)轉(zhuan)換成電信(xin)號同(tong)(tong)時放大以便供遠方測量(liang)和控制的(de)信(xin)號源)的(de)轉(zhuan)換器(qi)(qi)(qi)(qi)(qi)。傳(chuan)感器(qi)(qi)(qi)(qi)(qi)和變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)一(yi)同(tong)(tong)構成自動(dong)控制的(de)監測信(xin)號源。不(bu)(bu)同(tong)(tong)的(de)物理量(liang)需要(yao)不(bu)(bu)同(tong)(tong)的(de)傳(chuan)感器(qi)(qi)(qi)(qi)(qi)和相(xiang)應的(de)變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)。變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)的(de)種類很(hen)多(duo)，用在工控儀表上面的(de)變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)主要(yao)有溫度變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)、壓力變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)、流量(liang)變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)、電流變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)、電壓變(bian)(bian)(bian)送(song)器(qi)(qi)(qi)(qi)(qi)等。

　　一、變送器工作原(yuan)理(li)如下：

　　變(bian)送器(qi)是中文(wen)名字(zi)，英文(wen)是：TRANSMITTER，顧名思義，變(bian)送器(qi)含有“變(bian)"和“送"之(zhi)意。

　　1、所謂(wei)“變(bian)"，是指將(jiang)各(ge)種從傳感器(qi)(qi)來的物理(li)量，轉(zhuan)變(bian)為一(yi)種電(dian)信號(hao)。比如：利用(yong)熱電(dian)偶，將(jiang)溫(wen)度轉(zhuan)變(bian)為電(dian)勢；利用(yong)電(dian)流(liu)互感器(qi)(qi)，將(jiang)大電(dian)流(liu)轉(zhuan)換為小電(dian)流(liu)。由于電(dian)信號(hao)最容易處理(li)，所以，現代變(bian)送(song)器(qi)(qi)，均將(jiang)各(ge)種物理(li)信號(hao)，轉(zhuan)變(bian)成(cheng)電(dian)信號(hao)。因此，說的變(bian)送(song)器(qi)(qi)，通常都變(bian)成(cheng)了“電(dian)"。

　　2、所謂(wei)“送(song)(song)"，是(shi)指(zhi)將各種已變(bian)成的(de)電信號(hao)，為了便(bian)于其他儀表或控制裝置接收和傳(chuan)送(song)(song)，又(you)一(yi)次通(tong)過(guo)電子線(xian)路，將傳(chuan)感(gan)器(qi)(qi)來(lai)的(de)電信號(hao)，統一(yi)化（比如4-20MA）。方法是(shi)通(tong)過(guo)多(duo)個運(yun)算(suan)放大器(qi)(qi)來(lai)實現(xian)。這(zhe)種“變(bian)"+“送(song)(song)"，就組成了現(xian)代用的(de)變(bian)送(song)(song)器(qi)(qi)。

　　3、如：SST3-AD 是一種將電(dian)流互感(gan)器的(de)輸出電(dian)流，轉(zhuan)變(bian)(bian)成標準的(de)4-20MA的(de)電(dian)流變(bian)(bian)送(song)器；再比如：SST4-LD，可以將重(zhong)量傳感(gan)器來(lai)的(de)重(zhong)量信號，轉(zhuan)變(bian)(bian)成標準的(de)4-20MA的(de)重(zhong)量變(bian)(bian)送(song)器。

　　二、種類特點：

　　1、變(bian)送(song)(song)器(qi)的種類很多，用在(zai)工(gong)控儀表上面的變(bian)送(song)(song)器(qi)主(zhu)要有溫(wen)度變(bian)送(song)(song)器(qi)， 變(bian)送(song)(song)器(qi)壓力變(bian)送(song)(song)器(qi)，流(liu)量(liang)變(bian)送(song)(song)器(qi)，電(dian)流(liu)變(bian)送(song)(song)器(qi)，電(dian)壓變(bian)送(song)(song)器(qi)等。

　　2、變送器在儀(yi)器、儀(yi)表和工業自動化領域(yu)中起(qi)著舉足輕重的(de)作(zuo)用。與傳(chuan)感器不同，變送器除了(le)能將非電量(liang)轉換成(cheng)可測量(liang)的(de)電量(liang)外，一般還具有(you)一定(ding)的(de)放大(da)作(zuo)用。 

差壓變送(song)器流量緩慢變小的(de)原因

1、使用條件是(shi)否(fou)與設計參數(shu)一(yi)致(zhi)，儀表選(xuan)型是(shi)否(fou)正確。

　　2、儀表安裝是否規范，尤其是引線(xian)部分(fen)；

　　3、儀表(biao)引壓有無堵塞、不(bu)暢；有無泄(xie)漏；

　　4、引線介(jie)質(zhi)是否(fou)滿足測量(liang)要求，系統有(you)無(wu)遷移，系統零點是否(fou)正常；

　　5、變送器供(gong)電是(shi)否正常，二次(ci)表(biao)的量程與現場(chang)儀(yi)表(biao)是(shi)否一(yi)致；

　　6、工藝介質(zhi)的工況是否正(zheng)常。

　　7、節(jie)流元件的(de)安裝是否(fou)正常，孔板有無裝反、磨(mo)損；

　　8、變送器本身(shen)是否正常。