Kev siv hauv kev tsim khoom tau dhau los ua ntau dua.Thermocouplestau dhau los ua ib qho ntawm feem ntau siv ntsuas qhov ntsuas kub nyob hauv kev lag luam. Lawv muaj cov yam ntxwv ntawm kev ntsuas siab kom raug, ntsuas dav, qauv yooj yim, thiab siv tau yooj yim. Peb nkag siab thiab tshuaj xyuas cov khoom lag luam los ntawm ntau txoj hauv kev, thiab nthuav tawm ntau yam kev paub txog kev lag luam rau feem coob ntawm cov neeg siv khoom siv.
Yog li tom ntej no peb los to taub qhov kev txiav txim ntawm seb lubthermocouple yog qhov zoo los yog phem?
Lub hauv paus ntsiab lus ntawm kev ntsuas kub ntawmthermocouple yog ob qhov sib txawv ntawm cov khoom siv hluav taws xob tsim lub voj kaw. Thaum muaj qhov kub thiab txias ntawm ob qhov kawg, tam sim no yuav ntws los ntawm lub voj voog. Lub sijhawm no, muaj lub zog electromotive-thermoelectromotive quab yuam ntawm ob qhov kawg. Qhov no yog qhov hu ua Seebeck effect. Ob homogeneous conductors ntawm cov khoom sib txawv yogcov thermoelectrodes, qhov kawg nrog qhov kub siab dua yog qhov ua haujlwm kawg, qhov kawg nrog qhov kub qis yog qhov kawg pub dawb, thiab qhov kawg pub dawb feem ntau yog nyob ntawm qhov kub ib txwm muaj.
Tom qab siv rau ib lub sij hawm,thermocouples yuav twv yuav raug hu tawm, thiab tej zaum yuav puas. Feem ntau, qhov zoo ntawm covthermocouples muaj feem xyuam rau covthermocouple hlau (xaim) hauv nws, tab sis yuav ua li cas txiav txim siab qhov zoo ntawm covthermocouple hlau yog qhov teeb meem. Cia peb tham luv luv.


Ua ntej tshaj plaws, xyuas kom meej tias tsis muaj teeb meem nrog cov tsos ntawm covthermocouple hlau, seb nws zoo los yog phem, thiab nws tsuas yog txiav txim siab los ntawm kev sim.
Muab covthermocouple xaim los kuaj ntawm lub tes tsho tshwj xeeb ceramic rau lubthermocouple, thiab muab tso rau hauv tubular hluav taws xob rauv ua ke nrog cov txheej txheem platinum thiab rhodiumthermocouple, thiab ntxig qhov kub kawg rau hauv lub qhov dej ntxeem tau hlau npib tsib xee hauv tubular hluav taws xob cub. Hauv lub tog raj kheej. Muab qhov txias kawg ntawm cov nyiaj them rov qab rau hauv lub thawv ntawm xoom degrees Celsius tswj los ntawm cov dej khov thiab dej sib tov.
Khaws lub tshuab hluav taws xob rau qhov cub kub ntawm qhov siab tshaj plaws ntawm covthermocouple, thiab ua kom qhov no tsis tu ncua. Nyob rau lub sijhawm no, siv Wheatstone potentiometer uas tsim nyog los ntsuas thiab sau cov ntsuas qhov ntsuas qhov sib txawv ntawm tus qauvthermocouple thiab covthermocouple los kuaj. Raws li cov ntaub ntawv sau tseg qhov sib txawv ntawm qhov sib txawv ntawm qhov ntsuas kub, tshawb xyuas lub rooj ntsuas ntsuas kom paub seb qhov ntsuas kub npaum li cas. Yog tiasthermocouplenyob rau hauv kev xeem yog tawm ntawm kev ua siab ntev, nws tuaj yeem raug txiav txim tias tsis tsim nyog.