Gabatarwa:

A cikin hanyoyin samar da kayayyaki na masana'antu, zafin jiki yana ɗaya daga cikin mahimman sigogi da ake buƙatar aunawa da sarrafawa. A cikin auna zafin jiki, ana amfani da thermocouples sosai. Suna da fa'idodi da yawa, kamar tsari mai sauƙi, ƙera mai sauƙi, kewayon aunawa mai faɗi, babban daidaito, ƙaramin inertia, da sauƙin watsa siginar fitarwa daga nesa. Bugu da ƙari, saboda thermocouple firikwensin aiki ne mai aiki, ba ya buƙatar samar da wutar lantarki ta waje yayin aunawa, kuma yana da matukar dacewa don amfani, don haka sau da yawa ana amfani da shi don auna zafin iskar gas ko ruwa a cikin tanderu da bututu da zafin saman daskararru.

Ka'idar Aiki:

Idan akwai masu jagoranci ko semiconductor guda biyu daban-daban A da B don samar da madauki, kuma ƙarshen biyu sun haɗu da juna, matuƙar yanayin zafi a mahaɗa biyu ya bambanta, zafin ƙarshen ɗaya shine T, wanda ake kira ƙarshen aiki ko ƙarshen zafi, kuma zafin ɗayan ƙarshen shine T0, wanda ake kira ƙarshen kyauta (wanda kuma ake kira ƙarshen tunani) ko ƙarshen sanyi, za a samar da ƙarfin lantarki a cikin madauki, kuma alkibla da girman ƙarfin lantarki suna da alaƙa da kayan mai gudanarwa da zafin mahaɗa biyu. Ana kiran wannan lamari "tasirin thermoelectric", kuma madaukin da ya ƙunshi masu jagoranci biyu ana kiransa "thermocouple".

Ƙarfin thermoelectromotive ya ƙunshi sassa biyu, ɓangare ɗaya shine ƙarfin electromotive na hulɗar masu jagoranci guda biyu, ɗayan kuma shine ƙarfin electromotive na thermoelectronic na mai gudanarwa guda ɗaya.

Girman ƙarfin thermoelectromotive a cikin madaukin thermocouple yana da alaƙa ne kawai da kayan jagora wanda ya ƙunshi thermocouple da zafin mahaɗan biyu, kuma ba shi da alaƙa da siffar da girman thermocouple. Lokacin da aka gyara kayan lantarki guda biyu na thermocouple, ƙarfin thermoelectromotive shine yanayin zafi na mahaɗan biyu t da t0. ba shi da kyau.