Xaiv cov thermocouples raws li qhov txawv ntawm qhov kub thiab txias.
Xaiv cov thermocouples raws li qhov txawv ntawm qhov kub thiab txias.
Hauv qhov ntsuas qhov ntsuas, qhov khoom siv ob sab no tsis tshua muaj txoj hauv kev, yuav tsum paub txog cov khoom ntsuas, tus tswv cov thermocouple ntau yam, raws li kev ntsuas kev ntsuas, kev siv ntawm qhov chaw, qib kub thiab thiaj xaiv qhov tseeb thermocouple.
A Xovxwm qhov kev xaiv kub
Thaum t <1000 ℃,="" kev="" xaiv="" ntawm="" tus="" nqi="" pheej="" yig="" cov="" thermocouple,="" xws="" li="" k-hom=""> Nws yog tsi ntsees los ntawm kev siv ntawm ntau qhov kub thiab txias, kev kub kub yog ruaj khov. Thaum t = -200 ib 300 ℃, qhov zoo tshaj plaws ntawm T-hom thermocouple, uas yog qhov siab tshaj plaws ntawm pheej yig hlau thermocouple; kuj yuav xaiv E-hom thermocouple, nws yog qhov siab tshaj plaws nyob rau hauv thermoelectric zog hloov, lub siab tshaj plaws. Thaum t = 1000 tauj ib 1400 ℃, xaiv R, S-hom thermocouple. Thaum t <1300 ℃,="" xaiv="" n-hom="" lossis="" k-hom=""> Thaum t = 1400 ib 1800 ℃, kev xaiv B-hom thermocouple. Thaum t <1600 ℃,="" siv="" s-type="" lossis="" r-type=""> Thaum t> 1800 ℃, feem ntau siv tungsten zinc thermocouple.
B raws li xaiv qhov nruab nrab xaiv
a: oxidizing cua
Thaum t <1300 ℃,="" siv="" n-hom="" lossis="" k-hom="" thermocouple,="" vim="" hais="" tias="" lawv="" yog="" qhov="" muaj="" zog="" tshaj="" kev="" qis="" ntawm="" cov="" thermocouple=""> thaum t> 1300 ℃, kev xaiv ntawm platinum basking thermocouple.
b: Vacuum, txo cov cua
Thaum twg t <950 ℃,="" koj="" tuaj="" yeem="" xaiv="" x-hom="" thermocouple,="" nws="" tuaj="" yeem="" ua="" haujlwm="" hauv="" qhov="" chaw=""> Nws tseem tuaj yeem ua haujlwm nyob rau hauv qhov chaw txo tsawg; thaum t> 1600 ℃, yuav tsum siv cov thermocouple tungsten rhenium.
