露點變送(song)(song)器(qi)(qi)(qi)是(shi)把傳(chuan)(chuan)感器(qi)(qi)(qi)的輸出信(xin)(xin)號轉變為可(ke)被(bei)控(kong)制(zhi)(zhi)器(qi)(qi)(qi)識別的信(xin)(xin)號（或將傳(chuan)(chuan)感器(qi)(qi)(qi)輸入的非(fei)電量轉換(huan)成電信(xin)(xin)號同(tong)時放大以便供遠方(fang)測量和控(kong)制(zhi)(zhi)的信(xin)(xin)號源）的轉換(huan)器(qi)(qi)(qi)。傳(chuan)(chuan)感器(qi)(qi)(qi)和變送(song)(song)器(qi)(qi)(qi)一同(tong)構成自動控(kong)制(zhi)(zhi)的監測信(xin)(xin)號源。不同(tong)的物(wu)理量需要不同(tong)的傳(chuan)(chuan)感器(qi)(qi)(qi)和相應(ying)的變送(song)(song)器(qi)(qi)(qi)。
變(bian)(bian)送器(qi)(qi)也是一種輸(shu)出(chu)為標(biao)準信號的傳(chuan)感器(qi)(qi)。露點(dian)變(bian)(bian)送器(qi)(qi)采用了濕度傳(chuan)感器(qi)(qi)測(ce)量露點(dian)的方式(shi)，具有穩定性好(hao)、可靠性高、線性一致性以及重復性好(hao)、使用壽命長、測(ce)量范圍寬等(deng)特點(dian)。
變(bian)送(song)器(qi)(qi)的種類很多，用在工控儀表上面的變(bian)送(song)器(qi)(qi)主要有溫度變(bian)送(song)器(qi)(qi)、壓力變(bian)送(song)器(qi)(qi)、流量變(bian)送(song)器(qi)(qi)、電(dian)流變(bian)送(song)器(qi)(qi)、電(dian)壓變(bian)送(song)器(qi)(qi)等等。
在諸類儀(yi)表中，變送器的應用廣泛(fan)、普(pu)遍，變送器大體分為壓力變送器和差(cha)壓變送器。
露(lu)(lu)點(dian)變送(song)器(qi)(qi)具有自動校(xiao)準功能、好的(de)穩定(ding)性(xing)、快速(su)響(xiang)應時(shi)間和緊湊(cou)的(de)結構。露(lu)(lu)點(dian)變送(song)器(qi)(qi)采用自動校(xiao)準技術，確保了露(lu)(lu)點(dian)變送(song)器(qi)(qi)測(ce)量的(de)長期穩定(ding)性(xing)。露(lu)(lu)點(dian)傳感器(qi)(qi)還具有防(fang)冷凝、抗灰塵(chen)顆(ke)粒、不受油氣及大(da)多數化學(xue)氣體，以及流量的(de)影響(xiang)的(de)特(te)征。
露點變(bian)送器(qi)可應用(yong)于(yu)*小(xiao)的(de)干燥設備，被廣泛應用(yong)于(yu)醫(yi)院、制(zhi)藥(yao)等(deng)各個工業(ye)領域；露點變(bian)送器(qi)主要應用(yong)于(yu)石化化驗室(shi)、鋼鐵動(dong)力處、氫氣、天然氣、煤氣站、制(zhi)配(pei)氣站、特(te)氣生產(chan)和使用(yong)、氣體(ti)實驗室(shi)等(deng)。 
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