Lub thermocouple yog ib qho khoom siv ntsuas kub uas muaj ob qhov sib txawv ntawm cov conductors uas sib cuag ntawm ib lossis ntau qhov chaw. Nws tsim ib qho hluav taws xob thaum qhov kub ntawm ib qho ntawm qhov sib txawv ntawm qhov ntsuas kub ntawm lwm qhov hauv Circuit Court. Thermocouples yog ib hom kev ntsuas kub uas siv dav rau kev ntsuas thiab tswj, thiab tuaj yeem hloov pauv qhov kub thiab txias rau hauv hluav taws xob. Kev lag luam thermocouples yog pheej yig, hloov pauv tau, tau muab nrog cov qauv sib txuas, thiab tuaj yeem ntsuas ntau qhov kub thiab txias. Nyob rau hauv sib piv rau feem ntau lwm txoj kev ntsuas kub, thermocouples yog tus kheej powered thiab yuav tsum tsis muaj lwm yam excitation.