Indlela yokwahlulela ukuthi i-thermocouple inhle noma imbi?

Ukusetshenziswa ekukhiqizeni kuya ngokuya kuba banzi.Ama-Thermocouplesibe ngesinye sezingxenye zokuthola izinga lokushisa ezivame ukusetshenziswa kakhulu embonini. Banezici zokunemba kwesilinganiso esiphezulu, ububanzi bokulinganisa ububanzi, isakhiwo esilula, nokusetshenziswa okulungile. Siqonda futhi sihlaziye imikhiqizo ngamashaneli amaningi, futhi sethula inhlobonhlobo yolwazi lwemboni eningini labasebenzisi benethiwekhi.
Ngakho-ke ngokulandelayo siza ukuqonda ukwahlulelwa kokuthi i-i-thermocouple yinhle noma yimbi?
Umgomo oyisisekelo wesilinganiso sokushisa se-i-thermocouple ukuthi izingxenye ezimbili ezihlukile zabashayeli bezinto ezibonakalayo zakha iluphu evaliwe. Lapho kune-gradient yezinga lokushisa emaphethelweni womabili, okwamanje kuzogeleza kuluphu. Ngalesi sikhathi, kukhona amandla we-electromotive force-thermoelectromotive force phakathi kwale mikhawulo emibili. Lona umphumela obizwa ngeSeebeck. Abaqhubi ababili abafanayo bezinto ezihlukileama-thermoelectrodes, ukuphela ngokushisa okuphezulu ukuphela kokusebenza, ukuphela ngokushisa okuphansi kungukuphela kwamahhala, futhi ukuphela kwamahhala kuvame ukuba sezingeni elithile lokushisa njalo.
Ngemuva kokusebenzisa isikhashana, ama-i-thermocouples nakanjani azoguga, futhi angalimala. Ngokuvamile, ikhwalithi yama-i-thermocouples ahlobene nocingo lwe-i-thermocouple (ucingo) olukulo, kepha ukuthi ungalihlulela kanjani ikhwalithi yocingo lwe-i-thermocouple yinkinga. Ake siyixoxe kafushane.


Okokuqala, qiniseka ukuthi ayikho inkinga ngokuvela kocingo lwe-i-thermocouple, noma luhle noma lubi, futhi lunganqunywa kuphela ngokuhlolwa.
Beka ucingo lwe-i-thermocouple ukuze luhlolwe emkhonweni okhethekile we-ceramic wei-thermocouple, futhi uyifake esithandweni somlilo esineshubhu kanye neplatinamu evamile ne-rhodiuminsimbi, bese ufaka isiphetho esishisayo ku-nickel yensimbi enezimbotshana esithandweni sikagesi esineshubhu. Kusilinda. Faka amaphethelo abandayo ezintambo zesinxephezelo ngokulandelana kwazo esitsheni esiziro degrees Celsius esigcinwe yingxube yeqhwa namanzi.
Gcina isithando somlilo seshubhu kagesi ezingeni lokushisa eliphezulu elivumelekile le-i-thermocouple, futhi ugcine lobu bubanzi ngokungaguquki. Ngalesi sikhathi, sebenzisa i-potentiometer ye-Wheatstone efanelekayo ukuze ulinganise futhi urekhode umehluko ongaba khona we-thermoelectric phakathi kwe-i-thermocouple evamile kanye ne-i-thermocouple ezohlolwa. Ngokomehluko orekhodiwe we-thermoelectric, hlola ithebula lenkomba ukuze uthole izinga lokushisa elihambisanayo. Uma iinsimbingaphansi kokuvivinywa kungaphandle kokubekezelelana, kungahlulelwa njengokufanelekile.