熱(re)電(dian)偶(ou)補(bu)償(chang)導(dao)線(xian)是(shi)用(yong)於(yu)熱(re)電(dian)偶(ou)延(yan)長(zhang)，即(ji)熱(re)電(dian)偶(ou)信(xin)號(hao)傳(zhuan)遞(di)使(shi)用(yong)，起(qi)到(dao)信(xin)號(hao)補(bu)償(chang)作(zuo)用(yong)，使(shi)得(dei)溫(wen)度(duo)測(ce)量(liang)準(zhun)確(que)。一(yi)般(pan)導(dao)線(xian)隻(zhi)能(neng)就(jiu)起(qi)到(dao)電(dian)壓(ya)電(dian)流(liu)傳(zhuan)輸(shu)作(zuo)用(yong)。是(shi)在(zai)一(yi)定(ding)溫(wen)度(duo)範(fan)圍(wei)內(nei)與(yu)所(suo)匹(pi)配(pei)分(fen)度(duo)號(hao)的(di)熱(re)電(dian)偶(ou)有(you)相(xiang)同(tong)熱(re)電(dian)勢(shi)標(biao)稱(chen)值(zhi)的(di)導(dao)線(xian)。補(bu)償(chang)導(dao)線(xian)的(di)正(zheng)確(que)使(shi)用(yong)尤(you)為(wei)重(chong)要(yao)。以(yi)下(xia)是(shi)上(shang)海(hai)自(zi)動(dong)化(hua)儀(yi)表(biao)三(san)廠(han)小(xiao)編(bian)總(zong)結(jie)的(di)熱(re)電(dian)偶(ou)補(bu)償(chang)導(dao)線(xian)在(zai)使(shi)用(yong)中(zhong)要(yao)注(zhu)意(yi)的(di)五(wu)大(dai)要(yao)點(dian)，希(xi)望(wang)能(neng)夠(gou)為(wei)新(xin)手(shou)提(ti)供(gong)幫(bang)助(zhu)。
 一(yi)、補(bu)償(chang)導(dao)線(xian)的(di)選(xuan)擇(ze) 
 補(bu)償(chang)導(dao)線(xian)一(yi)定(ding)要(yao)根(gen)據(ju)所(suo)使(shi)用(yong)的(di)熱(re)電(dian)偶(ou)種(zhong)類(lei)和(hu)所(suo)使(shi)用(yong)的(di)場(chang)合(ge)進(jin)行(hang)正(zheng)確(que)選(xuan)擇(ze)。例(li)如(ru),k型(xing)偶(ou)應(ying)該(gai)選(xuan)擇(ze)k型(xing)偶(ou)的(di)補(bu)償(chang)導(dao)線(xian),根(gen)據(ju)使(shi)用(yong)場(chang)合(ge),選(xuan)擇(ze)工(gong)作(zuo)溫(wen)度(duo)範(fan)圍(wei)。通(tong)常(chang)kx工(gong)作(zuo)溫(wen)度(duo)為(wei)-20～100℃,寬(kuan)範(fan)圍(wei)的(di)為(wei)-25～200℃。普(pu)通(tong)級(ji)誤(wu)差(chai)為(wei)±2.5℃,級(ji)為(wei)±1.5℃。 
 二(er)、接(jie)點(dian)連(lian)接(jie) 
 與(yu)熱(re)電(dian)偶(ou)接(jie)線(xian)端(duan)2個(ge)接(jie)點(dian)盡(jin)可(ke)能(neng)近(jin)一(yi)點(dian),盡(jin)量(liang)保(bao)持(chi)2個(ge)接(jie)點(dian)溫(wen)度(duo)一(yi)致(zhi)。與(yu)儀(yi)表(biao)接(jie)線(xian)端(duan)連(lian)接(jie)處(chu)盡(jin)可(ke)能(neng)溫(wen)度(duo)一(yi)致(zhi),儀(yi)表(biao)櫃(ju)有(you)風(feng)扇(shan)的(di)地(de)方(fang),接(jie)點(dian)處(chu)要(yao)保(bao)護(hu)不(bu)要(yao)使(shi)得(dei)風(feng)扇(shan)直(zhi)吹(chui)到(dao)接(jie)點(dian)。 
 三(san)、使(shi)用(yong)長(zhang)度(duo) 
 因(yin)為(wei)熱(re)電(dian)偶(ou)的(di)信(xin)號(hao)很(hen)低(di),為(wei)微(wei)伏(fu)級(ji),如(ru)果(guo)使(shi)用(yong)的(di)距(ju)離(li)過(guo)長(zhang),信(xin)號(hao)的(di)衰(cui)減(jian)和(hu)環(huan)境(jing)中(zhong)強(jiang)電(dian)的(di)幹(gan)擾(rao)偶(ou)合(ge),足(ju)可(ke)以(yi)使(shi)熱(re)電(dian)偶(ou)的(di)信(xin)號(hao)失(shi)真(zhen),造(zao)成(cheng)測(ce)量(liang)和(hu)控(kong)製(zhi)溫(wen)度(duo)不(bu)準(zhun)確(que),在(zai)控(kong)製(zhi)中(zhong)嚴(yan)重(chong)時(shi)會(kuai)產(chan)生(sheng)溫(wen)度(duo)波(bo)動(dong)。 
 根(gen)據(ju)我(wo)們(men)的(di)經(jing)驗(yan),通(tong)常(chang)使(shi)用(yong)熱(re)電(dian)偶(ou)補(bu)償(chang)導(dao)線(xian)的(di)長(zhang)度(duo)控(kong)製(zhi)在(zai)15米(mi)內(nei)比(bi)較(jiao)好(hao),如(ru)果(guo)超(chao)過(guo)15米(mi),建(jian)議(yi)使(shi)用(yong)溫(wen)度(duo)變(bian)送(song)器(qi)進(jin)行(hang)傳(zhuan)送(song)信(xin)號(hao)。溫(wen)度(duo)變(bian)送(song)器(qi)是(shi)將(qiang)溫(wen)度(duo)對(dui)應(ying)的(di)電(dian)勢(shi)值(zhi)轉(zhuan)換(huan)成(cheng)直(zhi)流(liu)電(dian)流(liu)傳(zhuan)送(song),抗(kang)幹(gan)擾(rao)強(jiang)。 
 四(si)、布(bu)線(xian) 
 補(bu)償(chang)導(dao)線(xian)布(bu)線(xian)一(yi)定(ding)要(yao)遠(yuan)離(li)動(dong)力(li)線(xian)和(hu)幹(gan)擾(rao)源(yuan)。在(zai)避(bi)免(wen)不(bu)了(liao)穿(chuan)越(yue)的(di)地(de)方(fang),也(ye)盡(jin)可(ke)能(neng)采(cai)用(yong)交(jiao)叉(cha)方(fang)式(shi),不(bu)要(yao)平(ping)行(hang)。 
 五(wu)、屏(bing)蔽(bi)補(bu)償(chang)導(dao)線(xian) 
  為(wei)了(liao)提(ti)高(gao)熱(re)電(dian)偶(ou)連(lian)接(jie)線(xian)的(di)抗(kang)幹(gan)擾(rao)性(xing),可(ke)以(yi)采(cai)用(yong)屏(bing)蔽(bi)補(bu)償(chang)導(dao)線(xian)。對(dui)於(yu)現(xian)場(chang)幹(gan)擾(rao)源(yuan)較(jiao)多(duo)的(di)場(chang)合(ge),效(xiao)果(guo)較(jiao)好(hao)。但(dan)是(shi)一(yi)定(ding)要(yao)將(qiang)屏(bing)蔽(bi)層(ceng)嚴(yan)格(ge)接(jie)地(de),否(pi)則(ze)屏(bing)蔽(bi)層(ceng)不(bu)僅(jin)沒(mo)有(you)起(qi)到(dao)屏(bing)蔽(bi)的(di)作(zuo)用(yong),反(fan)而(er)增(zeng)強(jiang)幹(gan)擾(rao)。