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工作原理

鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)的工作原理是(shi)由兩種不(bu)同成(cheng)份的導(dao)體(ti)兩端(duan)(duan)經焊(han)接(jie)(jie)(jie)(jie)，形成(cheng)回路(lu)，直(zhi)接(jie)(jie)(jie)(jie)測溫端(duan)(duan)叫測量端(duan)(duan)，接(jie)(jie)(jie)(jie)線(xian)端(duan)(duan)叫參比端(duan)(duan)。當測量端(duan)(duan)和參比端(duan)(duan)存(cun)在溫差(cha)時，就(jiu)會在回路(lu)中產生熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流，接(jie)(jie)(jie)(jie)上(shang)顯示(shi)(shi)儀表，儀表上(shang)就(jiu)會指示(shi)(shi)出熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)所產生的熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢的對應溫度值。鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)的熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢將隨著測量端(duan)(duan)的溫度升高而增(zeng)長，熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)勢的大小只和鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)導(dao)體(ti)材質以及兩端(duan)(duan)溫差(cha)有關(guan)，和熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極的長度，直(zhi)徑無關(guan)。鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)的結構(gou)是(shi)由導(dao)體(ti)，絕緣氧化鎂和1Cr18Ni9Ti不(bu)銹(xiu)鋼(gang)保護(hu)管經多(duo)次拉(la)制而成(cheng)，鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)產品主要由接(jie)(jie)(jie)(jie)線(xian)盒(he)，接(jie)(jie)(jie)(jie)線(xian)端(duan)(duan)子(zi)和鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)組成(cheng)基(ji)本結構(gou)，并配(pei)以各種安裝(zhuang)(zhuang)固定裝(zhuang)(zhuang)置(zhi)組成(cheng)。

主要技術指標(biao)

測溫(wen)范(fan)圍和(he)準確度(du)

注：1）t為被測溫(wen)度(du)的******值。

鎧裝熱(re)電偶熱(re)響(xiang)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(zhuang)熱(re)電(dian)偶熱(re)響(xiang)應(ying)時間不(bu)大于下表的(de)規定：

絕緣電阻

當周圍空(kong)氣溫度(du)為20±15℃，相對(dui)濕度(du)不大于80﹪時，絕緣型鎧裝熱(re)電偶的(de)偶絲(si)與(yu)外套管(guan)之間(jian)的(de)絕緣電阻值(zhi)應(ying)符(fu)合(he)下表(biao)規定。

型號表示(shi)