Ordinary thermocouples feem ntau muaj cov thermal electrodes, insulating raj, tiv thaiv tes tsho, thiab hlws ris thawv, thiab lwm yam.
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Ordinary thermocouples feem ntau muaj cov thermal electrodes, insulating raj, tiv thaiv tes tsho, thiab hlws ris thawv, thiab lwm yam.
Tam sim no, cov thermocouples siv thoob ntiaj teb muaj cov qauv tshwj xeeb, uas tau teev tseg tias cov thermocouples tau muab faib ua yim qhov sib txawv, xws li B, R, S, K, N, E, J, thiab T. Qhov ntsuas kub qis tshaj plaws uas lawv ntsuas tau yog rho tawm 270 degrees. Celsius, thiab qhov siab tshaj plaws tuaj yeem ncav cuag 1800 degrees Celsius. Ntawm lawv, B, R, thiab S belongs rau platinum series ntawm thermocouples, uas tseem hu ua cov hlau tseem ceeb thermocouples vim platinum yog cov hlau muaj txiaj ntsig, thaum cov seem yog hu ua pheej yig hlau thermocouples. Muaj ob hom thermocouple qauv, hom zoo tib yam thiab hom armored. Cov thermocouples feem ntau yog tsim los ntawm thermal electrodes, rwb thaiv tsev raj, lub tes tsho tiv thaiv, thiab cov thawv sib txuas, thaum cov khoom siv thermocouples yog cov khoom sib xyaw ua ke ntawm cov xaim thermocouple, cov ntaub ntawv rwb thaiv tsev, thiab lub tes tsho tiv thaiv hlau uas tau sib sau thiab ncab. Txawm li cas los xij, cov teeb liab hluav taws xob ntawm lub thermocouple xav tau ib hom xov hlau tshwj xeeb rau kev sib kis, uas peb xa mus rau cov xaim them nyiaj. Cov thermocouples sib txawv yuav tsum tau them nyiaj sib txawv, thiab lawv lub luag haujlwm tseem ceeb yog txuas nrog lub thermocouple, ua kom cov ntaub ntawv kawg ntawm lub thermocouple kom deb ntawm lub hwj chim qhov chaw, yog li stabilizing qhov kub ntawm qhov kev siv kawg. Cov xov hlau them nyiaj tau muab faib ua ob hom: hom nyiaj them thiab hom txuas ntxiv. Cov tshuaj muaj pes tsawg leeg ntawm cov hlau txuas ntxiv yog tib yam li ntawm cov khoom siv them nyiaj thermocouple. Txawm li cas los xij, hauv kev xyaum, cov xaim txuas ntxiv tsis yog ua los ntawm cov khoom siv tib yam li cov thermocouple, thiab feem ntau yog hloov los ntawm cov xaim nrog tib lub electron ceev raws li cov thermocouple. Kev sib txuas ntawm cov xaim them nyiaj thiab cov thermocouple feem ntau yog qhov tseeb heev. Cov ncej zoo ntawm lub thermocouple yog txuas nrog cov xaim liab ntawm cov xaim them nyiaj, thaum cov ncej tsis zoo txuas nrog cov xim ntxiv. Feem ntau cov xov hlau them nyiaj yog ua los ntawm tooj liab nickel alloy.
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