隨著現(xian)代工(gong)(gong)業的不(bu)斷發(fa)展,溫(wen)(wen)度(du)測(ce)(ce)(ce)量(liang)(liang)向(xiang)著低溫(wen)(wen)測(ce)(ce)(ce)量(liang)(liang)和高(gao)溫(wen)(wen)測(ce)(ce)(ce)量(liang)(liang)兩(liang)個(ge)方向(xiang)迅速(su)發(fa)展,生(sheng)產設備對(dui)溫(wen)(wen)度(du)測(ce)(ce)(ce)量(liang)(liang)范圍和精(jing)(jing)度(du)的要(yao)求也越來越高(gao),簡單的溫(wen)(wen)度(du)計測(ce)(ce)(ce)量(liang)(liang)已經不(bu)能滿足生(sheng)產的需要(yao)。熱(re)電偶,熱(re)電阻逐漸被引入(ru)到工(gong)(gong)業生(sheng)產溫(wen)(wen)度(du)測(ce)(ce)(ce)量(liang)(liang)中,并(bing)憑借其精(jing)(jing)度(du)高(gao)響(xiang)應速(su)度(du)快的優點,被廣泛使用。

　　安徽天(tian)康集團(tuan)工業熱電(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)工作原理是將(jiang)兩(liang)(liang)種(zhong)(zhong)不同(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)導(dao)(dao)體與半導(dao)(dao)體連接成閉合(he)回(hui)(hui)路，再將(jiang)其(qi)(qi)兩(liang)(liang)個(ge)接點分(fen)別置于(yu)(yu)溫(wen)(wen)(wen)度(du)(du)各為T及(ji)TO的(de)(de)(de)(de)(de)(de)(de)熱源中，則在(zai)該回(hui)(hui)路內即(ji)可產生熱電(dian)(dian)(dian)(dian)(dian)(dian)動勢(shi)，這(zhe)種(zhong)(zhong)現象叫做熱電(dian)(dian)(dian)(dian)(dian)(dian)效(xiao)應。而(er)(er)溫(wen)(wen)(wen)差電(dian)(dian)(dian)(dian)(dian)(dian)勢(shi)則是在(zai)同(tong)(tong)一(yi)導(dao)(dao)體的(de)(de)(de)(de)(de)(de)(de)兩(liang)(liang)端(duan)(duan)因其(qi)(qi)溫(wen)(wen)(wen)度(du)(du)不同(tong)(tong)而(er)(er)產生的(de)(de)(de)(de)(de)(de)(de)一(yi)種(zhong)(zhong)熱電(dian)(dian)(dian)(dian)(dian)(dian)勢(shi)。由(you)于(yu)(yu)高溫(wen)(wen)(wen)端(duan)(duan)(T)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)能量比低(di)(di)溫(wen)(wen)(wen)端(duan)(duan)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)能量大，因而(er)(er)從高溫(wen)(wen)(wen)端(duan)(duan)跑到(dao)低(di)(di)溫(wen)(wen)(wen)端(duan)(duan)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)數(shu)(shu)比從低(di)(di)溫(wen)(wen)(wen)端(duan)(duan)跑到(dao)高溫(wen)(wen)(wen)端(duan)(duan)的(de)(de)(de)(de)(de)(de)(de)要(yao)多，其(qi)(qi)結果是高溫(wen)(wen)(wen)端(duan)(duan)失去電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)而(er)(er)帶(dai)正(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)荷，低(di)(di)溫(wen)(wen)(wen)端(duan)(duan)因得到(dao)電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)而(er)(er)帶(dai)負電(dian)(dian)(dian)(dian)(dian)(dian)荷，從而(er)(er)形成一(yi)個(ge)靜電(dian)(dian)(dian)(dian)(dian)(dian)場。這(zhe)樣(yang)在(zai)導(dao)(dao)體兩(liang)(liang)端(duan)(duan)便(bian)產生一(yi)個(ge)相(xiang)應的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)位差即(ji)溫(wen)(wen)(wen)差電(dian)(dian)(dian)(dian)(dian)(dian)勢(shi)。這(zhe)樣(yang)在(zai)熱電(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)回(hui)(hui)路中接入第三種(zhong)(zhong)材料的(de)(de)(de)(de)(de)(de)(de)導(dao)(dao)線(xian)，只要(yao)第三種(zhong)(zhong)導(dao)(dao)線(xian)兩(liang)(liang)端(duan)(duan)溫(wen)(wen)(wen)度(du)(du)相(xiang)同(tong)(tong)，則第三種(zhong)(zhong)導(dao)(dao)線(xian)引入不會影響(xiang)熱電(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)的(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)動勢(shi)。根(gen)據此性質，在(zai)回(hui)(hui)路中引入各種(zhong)(zhong)儀表、連接導(dao)(dao)線(xian)等，不用擔心(xin)對(dui)熱電(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)的(de)(de)(de)(de)(de)(de)(de)影響(xiang)，所(suo)以也可采用焊接法制成熱電(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)。目前，數(shu)(shu)字顯示熱電(dian)(dian)(dian)(dian)(dian)(dian)偶(ou)(ou)(ou)正(zheng)在(zai)成為工業測量儀表的(de)(de)(de)(de)(de)(de)(de)主流(liu)。

安徽天康集(ji)團熱電(dian)偶(ou)是(shi)熱工(gong)監測(ce)與測(ce)試(shi)的(de)計量工(gong)具(ju)，在工(gong)業生產(chan)中(zhong)發揮著重(zhong)要的(de)作(zuo)用。在當前的(de)生產(chan)工(gong)藝流程中(zhong)，檢測(ce)技術及其應用越來越重(zhong)要，尤其在對各種產(chan)品與構(gou)件進(jin)行無損擦傷、測(ce)量與計量方面，陶瓷熱電(dian)偶(ou)作(zuo)用功不可沒，對于提高(gao)質量與企業的(de)經濟效益是(shi)*的(de)。

     常規(gui)熱(re)(re)電(dian)(dian)偶(ou)(ou)在(zai)(zai)工(gong)業(ye)生產中(zhong)的用(yong)途不(bu)斷(duan)(duan)擴大的同時(shi)，具有更(geng)佳(jia)功能的特殊熱(re)(re)電(dian)(dian)偶(ou)(ou)產品(pin)不(bu)斷(duan)(duan)問世。如鎢(wu)錸系熱(re)(re)電(dian)(dian)偶(ou)(ou)，它(ta)是(shi)一種(zhong)(zhong)較好(hao)的超高(gao)溫(wen)熱(re)(re)電(dian)(dian)偶(ou)(ou)材料(liao)，其(qi)zui高(gao)使(shi)(shi)用(yong)溫(wen)度(du)受絕(jue)緣材料(liao)限(xian)制(zhi)，一般可(ke)達(da)到(dao)(dao)2400℃的使(shi)(shi)用(yong)條件。如在(zai)(zai)真空中(zhong)以裸(luo)線測量時(shi)可(ke)用(yong)到(dao)(dao)更(geng)高(gao)溫(wen)度(du)。目前，我國生產的鎢(wu)錸熱(re)(re)電(dian)(dian)偶(ou)(ou)，它(ta)以鎢(wu)錸5為正極(ji)、鎢(wu)錸20作負極(ji)。使(shi)(shi)用(yong)范圍為300℃～2000℃，分度(du)精(jing)度(du)可(ke)達(da)±1%。目前，上某(mou)些氮化(hua)硅(gui)陶瓷燒(shao)結(jie)溫(wen)度(du)已達(da)到(dao)(dao)1800℃以上，采用(yong)鎢(wu)錸熱(re)(re)電(dian)(dian)偶(ou)(ou)進行測溫(wen)是(shi)*可(ke)行的。此外適用(yong)超導陶瓷生產使(shi)(shi)用(yong)的金鐵—鎳鉻低溫(wen)熱(re)(re)電(dian)(dian)偶(ou)(ou)，快速反應(ying)薄膜熱(re)(re)電(dian)(dian)偶(ou)(ou)及(ji)非金屬(shu)熱(re)(re)電(dian)(dian)偶(ou)(ou)材料(liao)，由于具備各種(zhong)(zhong)優點(dian)和(he)價(jia)格低廉(lian)、資源豐富，在(zai)(zai)工(gong)業(ye)生產中(zhong)也得到(dao)(dao)了廣泛的應(ying)用(yong)。