工作原理(li)

鎧(kai)裝熱(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)(de)工作原理是由(you)兩(liang)種不(bu)(bu)同成(cheng)(cheng)份的(de)(de)(de)導(dao)體(ti)(ti)兩(liang)端(duan)(duan)(duan)經(jing)焊(han)接，形成(cheng)(cheng)回(hui)路，直接測(ce)(ce)溫端(duan)(duan)(duan)叫(jiao)測(ce)(ce)量端(duan)(duan)(duan)，接線(xian)端(duan)(duan)(duan)叫(jiao)參比端(duan)(duan)(duan)。當測(ce)(ce)量端(duan)(duan)(duan)和(he)(he)(he)參比端(duan)(duan)(duan)存在(zai)溫差時，就(jiu)會在(zai)回(hui)路中(zhong)產(chan)生(sheng)熱(re)電(dian)(dian)(dian)(dian)流，接上顯示儀表(biao)，儀表(biao)上就(jiu)會指示出熱(re)電(dian)(dian)(dian)(dian)偶(ou)所產(chan)生(sheng)的(de)(de)(de)熱(re)電(dian)(dian)(dian)(dian)動(dong)(dong)勢的(de)(de)(de)對應溫度(du)(du)值。鎧(kai)裝熱(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)(de)熱(re)電(dian)(dian)(dian)(dian)動(dong)(dong)勢將(jiang)隨著測(ce)(ce)量端(duan)(duan)(duan)的(de)(de)(de)溫度(du)(du)升高而增長(chang)(chang)，熱(re)電(dian)(dian)(dian)(dian)動(dong)(dong)勢的(de)(de)(de)大(da)小只和(he)(he)(he)鎧(kai)裝熱(re)電(dian)(dian)(dian)(dian)偶(ou)導(dao)體(ti)(ti)材質(zhi)以(yi)及兩(liang)端(duan)(duan)(duan)溫差有關(guan)，和(he)(he)(he)熱(re)電(dian)(dian)(dian)(dian)極的(de)(de)(de)長(chang)(chang)度(du)(du)，直徑無關(guan)。鎧(kai)裝熱(re)電(dian)(dian)(dian)(dian)偶(ou)的(de)(de)(de)結構(gou)是由(you)導(dao)體(ti)(ti)，絕緣氧化鎂和(he)(he)(he)1Cr18Ni9Ti不(bu)(bu)銹鋼(gang)保(bao)護管經(jing)多次拉制而成(cheng)(cheng)，鎧(kai)裝熱(re)電(dian)(dian)(dian)(dian)偶(ou)產(chan)品主(zhu)要由(you)接線(xian)盒，接線(xian)端(duan)(duan)(duan)子(zi)和(he)(he)(he)鎧(kai)裝熱(re)電(dian)(dian)(dian)(dian)偶(ou)組成(cheng)(cheng)基本結構(gou)，并配以(yi)各(ge)種安裝固(gu)定裝置組成(cheng)(cheng)。

主要(yao)技術(shu)指標

測溫(wen)范(fan)圍(wei)和準確度

注：1）t為被(bei)測(ce)溫度的******值(zhi)。

鎧裝熱電偶熱響(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。

鎧裝熱電偶熱響應(ying)時間不大于下(xia)表的規定：

絕緣電阻

當(dang)周圍空氣溫度(du)為20±15℃，相對(dui)濕度(du)不大于80﹪時，絕(jue)(jue)緣型鎧(kai)裝熱(re)電偶的偶絲(si)與外(wai)套管之間的絕(jue)(jue)緣電阻值應符合下表(biao)規定。

型號表示