Rubuta waya B thermococouple waya wani nau'in firikwensin yanayin zafin jiki ne wanda wani bangare ne na dangin Thermocoulle da kwanciyar hankali. Yana ƙunshe da wayoyin baƙin ƙarfe biyu daban-daban a jere ɗaya, yawanci an yi shi da allolinum-rhodium. A cikin yanayin nau'in b thermocopples, waya daya tana hada da platinum 70% da 30% Rhodium (yayin da sauran waya an yi shi ne daga Platinum 94% (PT94RH6).
Rubuta b thermocouples an tsara don auna yanayin zafi, jere daga 0 ° C zuwa 1820 ° C (32 ° F). An saba amfani dasu a aikace-aikace kamar suannun masana'antun masana'antu, kilns, da kuma gwajin dakin gwaje-gwaje. Saboda madaidaicin hadewar kayan da aka yi amfani da shi, nau'in b thermocopples yana ba da kwanciyar hankali da daidaito, musamman a yanayin zafi.
Wadannan thermocouples sun fi son su a cikin yanayi inda ake buƙatar babban daidaito mai ƙarfi, kodayake sun fi tsada fiye da sauran nau'ikan thermocopples. Daidai da kwanciyar hankali da kwanciyar hankali suna sa su dace da aikace-aikace a masana'antu kamar Aerospace, Aikin mota, da kuma metallurgy.