工作原理

鎧(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)工作原理是由(you)(you)兩種不(bu)同成份的(de)(de)導(dao)體(ti)兩端(duan)(duan)經焊接(jie)(jie)，形成回路，直接(jie)(jie)測(ce)溫(wen)端(duan)(duan)叫測(ce)量端(duan)(duan)，接(jie)(jie)線端(duan)(duan)叫參(can)比端(duan)(duan)。當(dang)測(ce)量端(duan)(duan)和參(can)比端(duan)(duan)存在溫(wen)差時，就會(hui)在回路中產生熱(re)(re)(re)電(dian)(dian)(dian)(dian)流(liu)，接(jie)(jie)上(shang)顯示(shi)儀(yi)表(biao)，儀(yi)表(biao)上(shang)就會(hui)指示(shi)出熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)所產生的(de)(de)熱(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢的(de)(de)對應溫(wen)度值。鎧(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)熱(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢將隨著測(ce)量端(duan)(duan)的(de)(de)溫(wen)度升高而(er)增長，熱(re)(re)(re)電(dian)(dian)(dian)(dian)動(dong)勢的(de)(de)大小只和鎧(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)導(dao)體(ti)材質以(yi)及(ji)兩端(duan)(duan)溫(wen)差有關，和熱(re)(re)(re)電(dian)(dian)(dian)(dian)極(ji)的(de)(de)長度，直徑(jing)無關。鎧(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)結構是由(you)(you)導(dao)體(ti)，絕緣(yuan)氧化鎂和1Cr18Ni9Ti不(bu)銹鋼保(bao)護管經多次拉制而(er)成，鎧(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)產品主(zhu)要由(you)(you)接(jie)(jie)線盒，接(jie)(jie)線端(duan)(duan)子和鎧(kai)裝(zhuang)熱(re)(re)(re)電(dian)(dian)(dian)(dian)偶(ou)組成基本(ben)結構，并配以(yi)各種安裝(zhuang)固定裝(zhuang)置組成。

主要(yao)技術指標

測溫范圍和準確(que)度

注：1）t為被測溫度的******值。

鎧裝熱電偶熱響應時(shi)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(xiang)應時間不大于(yu)下表的規定：

絕緣(yuan)電阻

當周圍空氣溫(wen)度(du)為20±15℃，相對濕度(du)不大于(yu)80﹪時，絕緣型鎧(kai)裝熱電偶的偶絲與外套(tao)管之(zhi)間(jian)的絕緣電阻值應符(fu)合下表規定。

型號(hao)表示