Madaurin thermocouple na Platinum-rhodium, wanda ke da fa'idodin daidaiton ma'aunin zafi mai yawa, kwanciyar hankali mai kyau, yankin auna zafin jiki mai faɗi, tsawon rai na aiki da sauransu, ana kuma kiransa thermocouple mai daraja na ƙarfe mai zafi. Ana amfani da shi sosai a fannoni kamar ƙarfe da ƙarfe, ƙarfe, sinadarai na petrochemical, fiber gilashi, lantarki, jiragen sama da sararin samaniya.

Duk da haka, yana da wuya a daidaita da yanayi mai rikitarwa da kuma wurare masu kunkuntar sarari waɗanda ke buƙatar lanƙwasawa da gajeren lokacin amsawar zafi saboda ƙarancin ƙarfi a yanayin zafi mai yawa da kuma yadda yake shafar gurɓatar muhalli.

Mai tsadar thermocouple mai sulke na ƙarfe sabon nau'in kayan auna zafin jiki ne wanda aka haɓaka bisa ga thermocouple na ƙarfe mai daraja, wanda ke da fa'idodin juriyar girgiza, juriyar matsin lamba mai yawa, juriya ga lalata sinadarai na matsakaici, ana iya lanƙwasa shi, ɗan gajeren lokacin amsawa da dorewa.

Tsarin thermocouple mai sulke na ƙarfe mai daraja ya ƙunshi murfin ƙarfe mai daraja, kayan rufewa, kayan waya na dipole. Yawanci yana cike da magnesium oxide ko wasu kayan rufewa tsakanin murfin ƙarfe mai daraja da wayar dipole, idan ana kiyaye rufin zafi mai yawa, wayar dipole tana cikin yanayin da ba ta da iskar gas, don hana thermocouple daga tsatsa da lalacewa saboda iska ko iskar gas mai zafi. (hoton tsarin wayar thermocouple kamar haka)