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工作原理

鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)(de)工作原理是由兩種不(bu)同成(cheng)份(fen)的(de)(de)(de)導體兩端(duan)(duan)(duan)經焊接(jie)(jie)，形成(cheng)回路(lu)，直接(jie)(jie)測溫(wen)(wen)端(duan)(duan)(duan)叫測量端(duan)(duan)(duan)，接(jie)(jie)線(xian)端(duan)(duan)(duan)叫參比(bi)端(duan)(duan)(duan)。當測量端(duan)(duan)(duan)和(he)(he)參比(bi)端(duan)(duan)(duan)存(cun)在溫(wen)(wen)差時，就會在回路(lu)中產生熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)流，接(jie)(jie)上顯示(shi)儀表，儀表上就會指示(shi)出(chu)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)所產生的(de)(de)(de)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢(shi)的(de)(de)(de)對應溫(wen)(wen)度(du)值。鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)(de)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢(shi)將隨著測量端(duan)(duan)(duan)的(de)(de)(de)溫(wen)(wen)度(du)升高而(er)增長(chang)(chang)，熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢(shi)的(de)(de)(de)大(da)小只和(he)(he)鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)導體材質以(yi)及兩端(duan)(duan)(duan)溫(wen)(wen)差有關，和(he)(he)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)極的(de)(de)(de)長(chang)(chang)度(du)，直徑無(wu)關。鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)(de)結構(gou)是由導體，絕(jue)緣氧化鎂和(he)(he)1Cr18Ni9Ti不(bu)銹鋼保護管(guan)經多(duo)次(ci)拉(la)制而(er)成(cheng)，鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)產品主要由接(jie)(jie)線(xian)盒，接(jie)(jie)線(xian)端(duan)(duan)(duan)子和(he)(he)鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)(re)(re)(re)(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)組成(cheng)基(ji)本結構(gou)，并(bing)配以(yi)各(ge)種安裝(zhuang)(zhuang)(zhuang)固定裝(zhuang)(zhuang)(zhuang)置組成(cheng)。

主要(yao)技術指標

測溫范圍和準確度

注：1）t為(wei)被測(ce)溫度(du)的******值。

鎧裝熱(re)(re)電偶熱(re)(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。

鎧裝熱(re)電偶熱(re)響應時間不大于下(xia)表(biao)的(de)規定(ding)：

絕(jue)緣電(dian)阻

當(dang)周(zhou)圍(wei)空氣溫度為20±15℃，相對(dui)濕(shi)度不大(da)于80﹪時，絕緣(yuan)型鎧裝熱電(dian)偶的偶絲與外(wai)套(tao)管之(zhi)間的絕緣(yuan)電(dian)阻值應符合下(xia)表規定。

型(xing)號(hao)表示