Platinum-rhodium thermocouple, wanda ke da fa'idodin daidaitattun ma'aunin zafin jiki, kwanciyar hankali mai kyau, yanki mai faɗin zafin jiki, tsawon rayuwar sabis da sauransu, ana kuma kiran shi babban zafin jiki mai daraja thermocouple. Ana amfani da shi sosai a fannonin ƙarfe da ƙarfe, ƙarfe, ƙarfe, petrochemical, fiber gilashi, kayan lantarki, jirgin sama da sararin samaniya.

Duk da haka, yana da wahala a daidaita da mahalli masu sarƙaƙƙiya da kunkuntar wuraren sararin samaniya waɗanda ke buƙatar lanƙwasa da ɗan gajeren lokacin amsawar zafi saboda ƙarancin ƙarfinsa a yanayin zafi mai girma da kuma saninsa ga gurɓataccen muhalli.

Girman ƙarfe sulke thermocouple wani sabon nau'in ma'aunin zafin jiki ne wanda aka haɓaka akan tushen ma'aunin ƙarfe mai daraja, wanda ke da fa'idodin juriya na girgiza, juriya mai ƙarfi, juriya ga lalata sinadarai na matsakaici, ana iya lanƙwasa, ɗan gajeren lokacin amsawa da karko. .

Ƙarfe mai sulke mai ɗorewa na musamman ya ƙunshi casing na ƙarfe mai daraja, kayan insulating, kayan waya na dipole. Yawancin lokaci ana cika shi da magnesium oxide ko wasu kayan kariya a tsakanin katakon ƙarfe mai daraja da waya ta dipole, a cikin yanayin kula da yanayin zafi mai zafi, waya ta dipole tana cikin yanayi mai tauri, don hana thermocouple daga lalata. da tabarbarewar iska ko iskar gas mai zafi. (hoton tsarin waya na thermocouple kamar haka)