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SBWR、SBWZ系列熱電(dian)(dian)(dian)(dian)偶、熱電(dian)(dian)(dian)(dian)阻(zu)溫(wen)度(du)變(bian)(bian)送器(qi)是DDZ系列儀表(biao)中的(de)現場安裝(zhuang)式(shi)溫(wen)度(du)變(bian)(bian)送器(qi)單元，與工業熱電(dian)(dian)(dian)(dian)偶、熱電(dian)(dian)(dian)(dian)阻(zu)配(pei)套(tao)使用，它采用二線(xian)制傳(chuan)輸(shu)(shu)方式(shi)（兩根(gen)導線(xian)作為電(dian)(dian)(dian)(dian)源(yuan)輸(shu)(shu)入(ru)和信(xin)號輸(shu)(shu)出的(de)公用傳(chuan)輸(shu)(shu)線(xian)）。將工業熱電(dian)(dian)(dian)(dian)偶、熱電(dian)(dian)(dian)(dian)阻(zu)信(xin)號轉(zhuan)換(huan)成(cheng)與輸(shu)(shu)入(ru)信(xin)號或(huo)與溫(wen)度(du)信(xin)號成(cheng)線(xian)性的(de)4-20mA、0-10mA的(de)輸(shu)(shu)出信(xin)號.