工作(zuo)原理

鎧(kai)(kai)裝(zhuang)(zhuang)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)工作原理是(shi)由(you)兩種不同成(cheng)份的(de)導(dao)體兩端(duan)(duan)經(jing)(jing)焊接，形成(cheng)回路，直接測溫端(duan)(duan)叫(jiao)測量(liang)端(duan)(duan)，接線(xian)(xian)端(duan)(duan)叫(jiao)參比端(duan)(duan)。當測量(liang)端(duan)(duan)和(he)參比端(duan)(duan)存在溫差時(shi)，就會在回路中產(chan)生熱(re)(re)電(dian)(dian)(dian)(dian)(dian)流，接上顯示儀(yi)表，儀(yi)表上就會指(zhi)示出熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)所產(chan)生的(de)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)動勢(shi)的(de)對應溫度(du)值。鎧(kai)(kai)裝(zhuang)(zhuang)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)動勢(shi)將(jiang)隨(sui)著測量(liang)端(duan)(duan)的(de)溫度(du)升高而(er)增長，熱(re)(re)電(dian)(dian)(dian)(dian)(dian)動勢(shi)的(de)大小只和(he)鎧(kai)(kai)裝(zhuang)(zhuang)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)導(dao)體材質以(yi)及兩端(duan)(duan)溫差有關，和(he)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)極的(de)長度(du)，直徑無(wu)關。鎧(kai)(kai)裝(zhuang)(zhuang)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)結(jie)構是(shi)由(you)導(dao)體，絕緣氧化鎂和(he)1Cr18Ni9Ti不銹(xiu)鋼保護管經(jing)(jing)多次拉制(zhi)而(er)成(cheng)，鎧(kai)(kai)裝(zhuang)(zhuang)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)產(chan)品主要由(you)接線(xian)(xian)盒，接線(xian)(xian)端(duan)(duan)子和(he)鎧(kai)(kai)裝(zhuang)(zhuang)熱(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)組成(cheng)基本結(jie)構，并配(pei)以(yi)各(ge)種安裝(zhuang)(zhuang)固(gu)定裝(zhuang)(zhuang)置組成(cheng)。

主(zhu)要技術指(zhi)標

測溫范圍(wei)和準確度

注：1）t為被測溫(wen)度的******值(zhi)。

鎧裝熱電偶熱響應時間

在溫度出現階躍變化時，熱電偶的輸出變化至相當于該階躍變化的50%，所需要的時間稱為熱響應時間，用T_0.5表示。

鎧(kai)裝熱電偶(ou)熱響(xiang)應(ying)時間不大(da)于下(xia)表的規定：

絕緣電阻

當周圍空氣(qi)溫度(du)為20±15℃，相對濕(shi)度(du)不(bu)大于80﹪時(shi)，絕緣型鎧裝熱電(dian)偶的偶絲與外套管(guan)之間的絕緣電(dian)阻值應符合(he)下表規定。

型號表示