Nā kumu no ka hoʻohana ʻana i ka thermocouple kūpono ʻole

Wahi a kathermocouplehelu helu helu B, S, K, E a me nā wela thermocouple e pili ana i ka waiwai millivolt (MV), ma ka mahana like, ʻo ka helu millivolt i hana ʻia (MV) B helu helu helu liʻiliʻi loa , ʻo ka helu helu S ka mea liʻiliʻi loa, K index ʻoi aku ka nui o ka helu, ʻo ka helu helu E ka nui loa, e hahai i kēia kumu e hoʻokolokolo ai.

ʻAʻole kūpono ka hoʻohana ʻana i nā thermocouple i kūpono ʻia e ka nānā ʻana a me ka hōʻoia. ʻAʻole ʻike ʻia kēia hanana a ʻaʻole i hoʻāla i ka manaʻo o ka poʻe. ʻO ka mea kūpono ʻole i ka hoʻohana ʻana i ka thermocouple i hōʻoia i ka hōʻoia ma muli o ka mana o ka inhomogeneity o ka uea thermocouple, ka hewa shunt o ka thermocouple pale kaua a me ka hoʻohana pono ʻole o ka thermocouple. ʻO ka mea hoʻoponopono pūnaewele aʻo uila e wehewehe i ka mea pohihihi ma kēia ʻatikala.

Ka hopena o ka inhomogeneity o ka uea thermocouple â 'ʻO nā mea othermocouplehe like ole. Ke nānā ʻia ka thermocouple i loko o ka lumi ana, e like me nā koi o nā lula, ʻo ka hohonu o ka hoʻokomo ʻana i loko o ka umu hōʻoia thermocouple he 300mm. No laila, hiki i ka hopena hōʻoia o kēlā me kēia thermocouple ke hōʻike a hōʻike nui paha i ka uea kāne 300nm lōʻihi mai ka hopena ana. ʻO ka hana thermoelectric. Eia naʻe, ke lōʻihi ka lōʻihi o ka thermocouple, aia ka hapa nui o nā uea i kahi wela kiʻekiʻe i ka wā e hoʻohana ai. Inā like ʻole ka uea thermocouple a aia ma kahi me kahi ʻanuʻu wela, a laila e hoʻopuka kekahi hapa o ia mea i ka ikaika thermoelectromotive. Ua kapa ʻia kēia ikaika electromotive i hiki ʻole parasitic, a ʻo ka hewa i hoʻokumu ʻia e ka hiki parasitic i kapa ʻia he hewa homogeneous.

ʻO ka inhomogeneity othermocoupleuwea ma hope o ka hoʻohana ʻana. E pili ana i ka mea hou i hana ʻiathermocouple, ʻoiai inā e hoʻokō ka hana heterogeneous i nā koi, ʻo ka hana hou ʻana a me ke kulou ʻana e hana i ka thermocouple e hana i ka distortion kaʻina hana, a nalowale kona homogeneity. Eia kekahi, e nalowale ka thermocouple i kona homogeneity ke hoʻohana ʻia no ka manawa lōʻihi ma lalo o ka wela kiʻekiʻe. ʻO ka emi ʻana o ka ikaika electromotive thermal i hoʻololi. Ke loaʻa ka ʻāpana o ka pōʻino i kahi wahi me kahi ʻanuʻu wela, e hoʻopuka pū ia i kahi hiki uila parasitic superimposed ma luna o ka ikaika thermoelectromotive a hōʻike i kahi hewa ana.