Ua ntej, hais txog cov khoom siv sib xyaw, J - hom thermocouple hlau muaj cov hlau - constantan ua ke. Cov hlau ua haujlwm zoo li ceg, thaum lub constantan (atooj liab - nickel alloy) ua haujlwm ua ceg tsis zoo. Qhov sib piv, K - hom thermocouple hlau yog ua los ntawm ibchromel- kev sib xyaw ua ke ntawm alumel. Chromel, uas feem ntau yog ua los ntawm nickel thiab chromium, yog ceg zoo, thiab alumel, ib qho hlau nickel - txhuas - manganese - silicon, yog ceg tsis zoo. Qhov sib txawv ntawm cov khoom siv no ua rau muaj kev hloov pauv hauv lawv cov yam ntxwv kev ua tau zoo.

Qhov thib ob, qhov kub thiab txias uas lawv ntsuas tau sib txawv heev.J - hom thermocouplesFeem ntau ntsuas tau qhov kub ntawm - 210°C txog 760°C. Lawv zoo rau ntau yam kev siv nrog qhov kub nruab nrab. Piv txwv li, hauv kev lag luam ua zaub mov, J-hom thermocouples feem ntau siv hauv qhov cub ci. Thaum ci mov ci, qhov kub hauv qhov cub feem ntau yog li ntawm 150°C txog 250°C. Peb cov xov hlau J-hom thermocouple zoo tuaj yeem saib xyuas cov kub no kom raug, kom ntseeg tau tias cov mov ci sib npaug thiab ua tiav cov qauv zoo meej. Lwm daim ntawv thov yog hauv kev tsim tshuaj, qhov twg J-hom thermocouples siv los ntsuas qhov kub thaum lub sijhawm ziab ntawm qee cov tshuaj. Qhov kub hauv cov txheej txheem no feem ntau khaws cia hauv 50°C txog 70°C, thiab peb cov khoom hlau J-hom thermocouple tuaj yeem muab cov ntaub ntawv kub txhim khu kev qha, tiv thaiv qhov zoo ntawm cov tshuaj.

K - hom thermocouples, ntawm qhov tod tes, muaj qhov kub thiab txias dav dua, txij li - 200 ° C txog 1350 ° C. Qhov no ua rau lawv tsis tseem ceeb hauv kev siv kub siab. Hauv kev lag luam hlau,K - hom thermocouplessiv los saib xyuas qhov kub thiab txias hauv lub cub tawg. Qhov kub thiab txias hauv lub cub tawg tuaj yeem ncav cuag txog 1200 ° C lossis siab dua. Peb cov xov hlau K - hom thermocouple tuaj yeem tiv taus qhov kub heev thaum tswj hwm qhov tseeb siab, tso cai rau cov neeg teb xov tooj kom tswj tau cov txheej txheem smelting thiab xyuas kom meej qhov zoo ntawm cov hlau. Hauv kev ua haujlwm aerospace, thaum lub sijhawm sim cov khoom siv cav dav hlau, K - hom thermocouples siv los ntsuas cov pa roj kub siab uas tsim tawm thaum lub sijhawm ua haujlwm cav. Cov pa roj no tuaj yeem ncav cuag qhov kub thiab txias ze li ntawm 1300 ° C, thiab peb cov khoom siv hlau K - hom thermocouple tuaj yeem muab cov ntawv nyeem kub raug, uas yog qhov tseem ceeb rau kev txhim kho thiab kev ua kom zoo dua ntawm cov cav dav hlau.

Qhov tseeb yog lwm qhov tseem ceeb. Feem ntau, cov thermocouples K-type muab qhov tseeb zoo dua li cov thermocouples J-type. Qhov ruaj khov ntawm cov thermocouples K-type hauv qhov chaw nyuaj kuj pab txhawb rau lawv qhov tseeb dua, ua rau lawv yog qhov kev xaiv zoo tshaj plaws rau kev tshawb fawb thiab cov txheej txheem kev lag luam siab.

Ntawm Tankii, peb cov khoom siv hlau thermocouple J thiab K yog tsim nrog kev tswj hwm zoo. Peb cov hlau thermocouple J - hom ua kom muaj kev ua tau zoo hauv lawv qhov kub thiab txias, thaum peb cov hlau thermocouple K - hom yog tsim los tiv taus qhov kub siab nrog qhov tseeb thiab ruaj khov zoo heev. Txawm hais tias koj xav tau ntsuas cov txheej txheem txias qis - kub lossis cov tshuaj tiv thaiv kev lag luam kub siab, peb cov khoom siv hlau thermocouple tuaj yeem muab cov ntaub ntawv kub thiab ruaj khov rau koj, pab koj ua kom koj cov haujlwm zoo dua thiab xyuas kom meej cov khoom zoo.