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電(dian)(dian)(dian)(dian)量(liang)變送(song)器是一(yi)種(zhong)將被測(ce)量(liang)參(can)數(交流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)、交流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)壓、有功功率(lv)、無功功率(lv)、有功電(dian)(dian)(dian)(dian)能(neng)(neng)、無功電(dian)(dian)(dian)(dian)能(neng)(neng)、頻率(lv)、相位、功率(lv)因數、直(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)壓、直(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)等)按線(xian)性(xing)比(bi)例轉(zhuan)換成(cheng)直(zhi)流(liu)(liu)(liu)(liu)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)或電(dian)(dian)(dian)(dian)壓(電(dian)(dian)(dian)(dian)能(neng)(neng)脈沖輸(shu)出(chu))的(de)(de)測(ce)量(liang)儀表。它廣泛(fan)應用于(yu)電(dian)(dian)(dian)(dian)力、石油、煤炭(tan)、冶(ye)金、鐵道、市政府等部(bu)門(men)的(de)(de)電(dian)(dian)(dian)(dian)氣測(ce)量(liang)、自動控(kong)制(zhi)以(yi)及調度系統(tong)。新型變送(song)器******標(biao)(biao)準輸(shu)出(chu)的(de)(de)模擬(ni)信(xin)號電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)值(zhi)為(wei)4～20mA兩線(xian)制(zhi)的(de)(de)環路(lu)(lu)在發送(song)數據以(yi)及控(kong)制(zhi)那些易于(yu)以(yi)這一(yi)標(biao)(biao)準接受(shou)指(zhi)令的(de)(de)某些執行器的(de)(de)過(guo)程中(zhong)有廣泛(fan)的(de)(de)應用。******上已(yi)作(zuo)為(wei)模擬(ni)信(xin)號中(zhong)的(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)遙(yao)測(ce)技術***一(yi)標(biao)(biao)準。在利用兩根(gen)導(dao)線(xian)的(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)遙(yao)測(ce)電(dian)(dian)(dian)(dian)路(lu)(lu)中(zhong)，變送(song)器工(gong)作(zuo)電(dian)(dian)(dian)(dian)源與示(shi)讀裝置，包括傳感器工(gong)作(zuo)電(dian)(dian)(dian)(dian)源和發送(song)導(dao)線(xian)的(de)(de)任何其它電(dian)(dian)(dian)(dian)阻都是相串聯在環路(lu)(lu)內。