Peb txoj kev hlau khi rau cov thermocouples

1 Txoj kev ib txwm muaj
Kev ntsuas qhov ntsuas kub rau thermocouple kub ntsuas yog qhov sib xyaw nrog lub tshuab hluav taws xob siv hluav taws xob (nco ntsoov tias muaj tus choj hluav taws xob sab hauv lub tshuab hluav taws xob hauv lub tshuab hluav taws xob).
2 Forwain Series Kev Txuas
Thermocouples tau txuas nyob rau hauv cov Series nyob rau hauv cov kev taw qhia tom ntej nws yog tsim ntawm qhov zoo thiab tsis zoo ntawm ntau qhov qauv sib txuas hauv koob. Tag nrho cov tswv yim thermoelectric muaj peev xwm ntawm thermocrouple zaub ntsuas yog:
E {{{{{0}} Eb (T1, rau) + EAB (T0)
Nws tuaj yeem pom tau tias siv cov txheej txheem txuas rau tom ntej yuav tso tawm cov tswv yim tib yam yuav tso cov twj paj nruag tag nrho, uas tuaj yeem txhim kho qhov rhiab ntawm qhov ntsuas. Ib lub thermocouple muaj ntau ntawm cov qauv sib txuas ntawm cov qauv sib txuas hauv hluav taws xob pyriameters kom ntsuas cov kev hloov pauv me me thiab tau txais loj thermoelectric muaj peev xwm tawm.
3 Nraj Nrig Series
Txuas tib lub polarity (tsis zoo lossis zoo) ntawm qhov thermocouple ntawm tib tus qauv hauv kev rov qab series.
Thermocrouple tsim nyob rau hauv txoj kev no yog hu ua ib qho txawv thermocouple. Nws cov ntawv rho tawm thermoelectric muaj peev xwm
△ E=E (t1, t0) - E (t2, t0) -2 E (t1, t2)
Yog li no, δ e qhia qhov sib txawv ntawm qhov sib txawv ntawm ob qhov ntsuas kub thiab kub (T1). Nws yuav tsum muaj nyob ntawm no tias tus qauv ntawm thermocouple siv thiab txias tawg kub t}}}}}}}}} yuav yuav tsum yog linocouple yog linear. Zoo li Nickel chromium tsibckel silicon thermocouple