Qhov kev xaiv ntawm cov khoom siv sheath cuam tshuam li cas rau cov thermal conductivity ntawm thermocouples?

Txawv sheath tshuaj muaj ntau yam ntawm thermal conductivity. Cov ntaub ntawv uas muaj cov thermal conductivity ntau dhau yuav hloov qhov sov so sai sai rau cov thermocouple hlws ris. Piv txwv li, cov hlau zoo li tooj liab thiab txhuas muaj qhov tshwj xeeb tshaj thermal conductivity. Thaum siv los ua cov khoom siv sheath, lawv muaj peev xwm ua tsis tau xav txog kev coj tus cwj pwm sov los ntawm qhov chaw nyob ib puag ncig mus rau lub thermocouple, ua rau lub sijhawm nrawm dua. Qhov no tej zaum yuav pab tau rau hauv cov kev pab cuam uas luv luv hloov qhov kub xav kom raug kuaj.
Ntawm qhov tod tes, cov khoom uas muaj thermal conductivity tsawg ua raws li cov insulators thiab sluggish down lub warmth mus. Ceramic thiab ob peb plastics yog cov piv txwv ntawm cov khoom uas tsis tshua muaj thermal conductivity. Hauv cov xwm txheej no, lub thermocouple yuav siv sij hawm ntev dua kom muaj qhov sib npaug nrog qhov kub thiab txias. Qhov no tej zaum yuav zoo heev nyob rau hauv cov kev pab cuam nyob rau hauv uas lub sij hawm qeeb cov tshuaj tiv thaiv yog nyiam, muaj nyob rau hauv ib puag ncig nrog qeeb kub hloov los yog nyob rau hauv uas overshooting lub hom phiaj kub yog ib qho kev txhawj xeeb.
Lub thickness ntawm sheath ntaub kuj ua lub luag hauj lwm. Cov ntaub qhwv tuab yuav feem ntau muaj qhov txo qis thermal conductivity, vim tias nws nthuav tawm ntxiv tiv thaiv kom sov txaus. Qhov no tuaj yeem cuam tshuam rau lub sijhawm cov tshuaj tiv thaiv dav dav thiab qhov tseeb ntawm cov thermocouple. Thicker sheaths tuaj yeem siv rau kev qhia txog kev nyab xeeb lossis kev rwb thaiv tsev, txawm li cas los xij lawv kuj tuaj yeem ua kom paub qhov tso tawm ntawm qhov ntsuas kub.
Lub compatibility ntawm cov ntaub qhwv ntaub nrog ib puag ncig yog lwm yam kev xav. Hauv ob peb qhov kev pab cuam, cov ntaub qhwv lub siab xav tiv thaiv cov tshuaj lom neeg, puas tsuaj, lossis kub dhau. Xaiv cov ntaub uas tuaj yeem ntsib rau cov xwm txheej no txawm li cas los xij nthuav qhia cov kev nyiam thermal conductivity yog qhov tseem ceeb. Piv txwv li, nyob rau hauv ib puag ncig corrosive, ib qho tshuaj tiv thaiv sheath ntaub nrog tsim thermal conductivity yuav tsum tau.