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工(gong)作原理

鎧(kai)(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)工作原理是由(you)兩(liang)種不同成(cheng)(cheng)(cheng)份的(de)導(dao)體(ti)兩(liang)端(duan)(duan)經(jing)焊接(jie)，形成(cheng)(cheng)(cheng)回(hui)路(lu)，直接(jie)測(ce)溫端(duan)(duan)叫測(ce)量端(duan)(duan)，接(jie)線(xian)端(duan)(duan)叫參比(bi)端(duan)(duan)。當測(ce)量端(duan)(duan)和參比(bi)端(duan)(duan)存在(zai)溫差時，就會在(zai)回(hui)路(lu)中產生熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流，接(jie)上(shang)顯(xian)示(shi)(shi)儀表，儀表上(shang)就會指示(shi)(shi)出熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)所產生的(de)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢的(de)對應(ying)溫度(du)(du)值。鎧(kai)(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢將隨著測(ce)量端(duan)(duan)的(de)溫度(du)(du)升高(gao)而增(zeng)長(chang)，熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢的(de)大小只(zhi)和鎧(kai)(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)導(dao)體(ti)材質以(yi)及兩(liang)端(duan)(duan)溫差有(you)關，和熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)極的(de)長(chang)度(du)(du)，直徑無關。鎧(kai)(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)結(jie)(jie)構是由(you)導(dao)體(ti)，絕緣氧化鎂和1Cr18Ni9Ti不銹鋼保(bao)護管經(jing)多次(ci)拉制而成(cheng)(cheng)(cheng)，鎧(kai)(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)產品主要由(you)接(jie)線(xian)盒，接(jie)線(xian)端(duan)(duan)子和鎧(kai)(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)組(zu)成(cheng)(cheng)(cheng)基本(ben)結(jie)(jie)構，并配以(yi)各種安(an)裝(zhuang)固定裝(zhuang)置組(zu)成(cheng)(cheng)(cheng)。

主要(yao)技(ji)術指標

測溫(wen)范圍和準確(que)度

注：1）t為被測溫度(du)的******值。

鎧裝熱(re)電偶熱(re)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。

鎧裝熱(re)電偶熱(re)響應時間不大于(yu)下表的規定：

絕緣電阻

當周圍空氣(qi)溫(wen)度為20±15℃，相(xiang)對濕(shi)度不大(da)于80﹪時，絕緣(yuan)型鎧(kai)裝熱(re)電(dian)(dian)偶的(de)偶絲與外套管之間的(de)絕緣(yuan)電(dian)(dian)阻值應符合下(xia)表規定。

型號表示