工(gong)作(zuo)原理

鎧(kai)裝熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)的(de)(de)工(gong)作原(yuan)理是由兩種不同成(cheng)份的(de)(de)導體(ti)兩端經(jing)焊(han)接(jie)，形成(cheng)回路，直接(jie)測(ce)(ce)溫(wen)端叫測(ce)(ce)量端，接(jie)線(xian)(xian)端叫參(can)比端。當測(ce)(ce)量端和參(can)比端存在溫(wen)差(cha)時，就會在回路中產(chan)生(sheng)熱(re)(re)(re)電(dian)(dian)(dian)(dian)流，接(jie)上顯示(shi)儀表，儀表上就會指示(shi)出(chu)熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)所(suo)產(chan)生(sheng)的(de)(de)熱(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢(shi)(shi)的(de)(de)對應溫(wen)度值。鎧(kai)裝熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)的(de)(de)熱(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢(shi)(shi)將隨(sui)著測(ce)(ce)量端的(de)(de)溫(wen)度升高而(er)增(zeng)長，熱(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢(shi)(shi)的(de)(de)大小只和鎧(kai)裝熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)導體(ti)材質以(yi)及兩端溫(wen)差(cha)有(you)關(guan)，和熱(re)(re)(re)電(dian)(dian)(dian)(dian)極的(de)(de)長度，直徑無關(guan)。鎧(kai)裝熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)的(de)(de)結構是由導體(ti)，絕緣氧化鎂和1Cr18Ni9Ti不銹鋼保護管經(jing)多次拉制而(er)成(cheng)，鎧(kai)裝熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)產(chan)品(pin)主要(yao)由接(jie)線(xian)(xian)盒，接(jie)線(xian)(xian)端子和鎧(kai)裝熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)組(zu)(zu)成(cheng)基(ji)本結構，并配以(yi)各種安裝固(gu)定裝置組(zu)(zu)成(cheng)。

主要技術指標

測溫范(fan)圍(wei)和準確(que)度(du)

注：1）t為被測溫度(du)的******值。

鎧裝熱(re)(re)電(dian)偶(ou)熱(re)(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(kong)氣溫度(du)為20±15℃，相對濕度(du)不大于80﹪時，絕緣(yuan)型鎧裝熱電(dian)偶的偶絲(si)與外套管之間(jian)的絕緣(yuan)電(dian)阻值應符(fu)合下表規定。

型號表示