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工(gong)作原理(li)

鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)(de)(de)(de)工(gong)作(zuo)原理是由(you)兩(liang)種不同成(cheng)(cheng)(cheng)(cheng)份的(de)(de)(de)(de)導(dao)體兩(liang)端經(jing)焊接(jie)，形(xing)成(cheng)(cheng)(cheng)(cheng)回路(lu)，直(zhi)接(jie)測溫端叫(jiao)測量(liang)端，接(jie)線端叫(jiao)參比(bi)端。當測量(liang)端和參比(bi)端存在(zai)溫差(cha)時，就會在(zai)回路(lu)中產生熱(re)電(dian)(dian)(dian)(dian)(dian)流，接(jie)上顯(xian)示儀表，儀表上就會指示出(chu)熱(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)所產生的(de)(de)(de)(de)熱(re)電(dian)(dian)(dian)(dian)(dian)動(dong)勢(shi)的(de)(de)(de)(de)對(dui)應(ying)溫度值(zhi)。鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)(de)(de)(de)熱(re)電(dian)(dian)(dian)(dian)(dian)動(dong)勢(shi)將隨著測量(liang)端的(de)(de)(de)(de)溫度升高(gao)而(er)增(zeng)長，熱(re)電(dian)(dian)(dian)(dian)(dian)動(dong)勢(shi)的(de)(de)(de)(de)大(da)小(xiao)只和鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)導(dao)體材質以及兩(liang)端溫差(cha)有關(guan)，和熱(re)電(dian)(dian)(dian)(dian)(dian)極的(de)(de)(de)(de)長度，直(zhi)徑無(wu)關(guan)。鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)的(de)(de)(de)(de)結構是由(you)導(dao)體，絕緣(yuan)氧(yang)化(hua)鎂和1Cr18Ni9Ti不銹(xiu)鋼保護管經(jing)多次(ci)拉制而(er)成(cheng)(cheng)(cheng)(cheng)，鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)產品(pin)主要由(you)接(jie)線盒(he)，接(jie)線端子(zi)和鎧(kai)裝(zhuang)(zhuang)(zhuang)熱(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)組成(cheng)(cheng)(cheng)(cheng)基本(ben)結構，并配以各種安(an)裝(zhuang)(zhuang)(zhuang)固定(ding)裝(zhuang)(zhuang)(zhuang)置組成(cheng)(cheng)(cheng)(cheng)。

主要技(ji)術指標

測溫范圍和準確度

注：1）t為(wei)被(bei)測溫度的******值。

鎧(kai)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。

鎧裝熱電偶熱響應時間不(bu)大于下(xia)表的規定(ding)：

絕緣(yuan)電阻

當周圍空氣溫度(du)為20±15℃，相對濕度(du)不大于(yu)80﹪時，絕緣(yuan)型鎧裝熱電(dian)偶(ou)的偶(ou)絲與外套(tao)管之間的絕緣(yuan)電(dian)阻值應符合下表規定。

型號表示(shi)