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SBWR、SBWZ系(xi)列熱(re)電(dian)偶(ou)、熱(re)電(dian)阻(zu)溫(wen)(wen)(wen)度(du)(du)變(bian)送器(qi)是DDZ系(xi)列儀表(biao)中(zhong)的現場安裝式溫(wen)(wen)(wen)度(du)(du)變(bian)送器(qi)單元，與(yu)工業熱(re)電(dian)偶(ou)、熱(re)電(dian)阻(zu)配套(tao)使用(yong)(yong)，它采(cai)用(yong)(yong)二(er)線(xian)(xian)(xian)制傳(chuan)輸(shu)(shu)方(fang)式（兩(liang)根導線(xian)(xian)(xian)作為電(dian)源(yuan)輸(shu)(shu)入和信(xin)號(hao)輸(shu)(shu)出的公用(yong)(yong)傳(chuan)輸(shu)(shu)線(xian)(xian)(xian)）。將(jiang)工業熱(re)電(dian)偶(ou)、熱(re)電(dian)阻(zu)信(xin)號(hao)轉換成(cheng)與(yu)輸(shu)(shu)入信(xin)號(hao)或與(yu)溫(wen)(wen)(wen)度(du)(du)信(xin)號(hao)成(cheng)線(xian)(xian)(xian)性的4-20mA、0-10mA的輸(shu)(shu)出信(xin)號(hao).