Cov ntaub ntawv siv dav hauv thermocoples

Cov ntaub ntawv siv thermal feem ntau siv tau platinum thiab tooj liab: Platinum muaj cov lus nruab nrab thiab oxidizing xov xwm, thiab muaj qee qhov kev tsis sib xws. Tooj liab resistors nrog cov qis qis hloov tus nqi hloov pauv ntawm qhov ntsuas kub ntau dua, thiab qhov tsim nyog rau kev tshaj tawm cov kab kub thiab kub loj dua thiab tsis muaj xeb. Lawv nquag nquag ua rau oxidation tshaj 150 degrees Celsius. Feem ntau cov khoom siv tiv thaiv nyob hauv Suav teb yog r {1}}}} 0=1000}}} ω kuj muaj qee leej. Cov lej ntsuas no yog PT10 PT100, PT1000. Cov tooj liab tsis kam yog r 0=50} ω thiab r ω {8}} ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω ω Number yog CU50 thiab CU100. Ntawm lawv, PT100 thiab CU50 muaj cov ntawv thov uas dav dav tshaj plaws