Thermocouple kub xa khoom txias Kev Khomob Kev Them Nyiaj Npe

Txias-kawg them nyiaj rau txoj cai ntawm thermocouple kub xa

Thermocouple yog ib qho ntsuas kub feem ntau ntsuas ntsuas hauv cov twj paj nruag ntsuas. Nws ntsuas ncaj qha rau qhov kub thiab hloov pauv cov cim qhia txog thermoelectric muaj peev xwm hloov mus rau qhov kub ntawm cov twj ntsuas hluav taws xob (theem nrab seev). Cov tsos ntawm ntau thermocouples feem ntau sib txawv vim yog xav tau, tab sis lawv cov qauv theem pib yog ntxig tib yam. Lawv feem ntau yog suav nrog cov khoom loj xws li cov hluav taws kub, insulating tes tiv thaiv txoj hlab thiab cov twj paj nruag, kaw cov twj siv hluav taws xob thiab cov kev tswj hluav taws xob. Txias-kawg them nyiaj rau txoj cai ntawm thermocouple kub xa

Thaum ntsuas qhov kub thiab txias, ntsuas kub thermocouple yuav tsum tau hais tias qhov kawg ntawm txoj kev ntsuas txias (yog li nws thermoelectric muaj peev xwm yog ib feem ntawm kev ntsuas ntsuas kub. Yog tias (qhov chaw nyob) Kub ntawm qhov hloov txias kawg hloov thaum ntsuas kev ntsuas, nws yuav cuam tshuam qhov tseeb ntawm qhov ntsuas tau. Siv qee yam kev ntsuas ntawm qhov xaus txias kom them rau qhov cuam tshuam los ntawm kev hloov pauv ntawm qhov kub txias yog hu ua thermocoup.
Qhov kev them nqi txias kawg ntawm thermocouples feem ntau yog txuas ntxiv los ntawm kev sib txuas tus choj sib sau ntawm ib lub thermal resistor hauv series ntawm qhov kawg txias. Peb caj npab ntawm tus choj yog cov qauv tiv taus, thiab sab caj npab yog tsim ntawm a (tooj liab) thermal resistor. Thaum txias txias hloov (piv txwv li, nce ntxiv), lub sijhawm thermal resistated los ntawm cov thermocouple yuav hloov pauv thiab ua rau lub zog hluav taws xob tsis kam hloov pauv (nce) hloov (nce). Yog tias cov tsis tau xaiv tau zoo thiab cov xov hluav taws xob yog qhov tseeb, thiab tag nrho cov zis voltage (tej zaum) ntawm tag nrho cov kev ntsuas ntsuas kub siab, thiab tag nrho cov kev ntsuas ntsuas hluav taws xob sib npaug Nov yog qhov kev them nyiaj txias kawg ntawm kev them nyiaj ntawm thermocouple ntawm cov khoom kub txias.

Thermocouple tus pas ntsuas kub yog tus pas ntsuas kub siv tau tam sim no. Thermocouple Tus pas ntsuas dej yog qhov ntsuas kub ntawm hluav taws xob, thermocouple, thermocouple them tawm cov khoom (lossis tso tawm cov xov tooj, thiab peb txuas nrog cov xov hlau.

Yuav ua li cas laij lub mob txias kawg ntawm thermocouple kub ntsuas

Qhov laj thawj yog vim li cas pib nkag mus rau txoj kab no ntawm kev xav yog tias lawv tsis nkag siab txog "kev sib raug zoo nruab nrab".

Txoj cai ntsuas kub theem nrab txhais tau tias: Lub peev xwm thermoelectrric ntawm ob lub peev xwm ntawm lub qhov kub thiab kub}}} 0}} Ntawm lawv, Tn yog hu ua qhov kub nyob nruab nrab.

Application of the intermediate temperature law: When the cold end temperature is not {{0}} degrees Celsius, the actual thermoelectric potential E (t, t0) of the known circuit cannot be used to directly look up the table to obtain the hot end temperature value. Nws yog qhov tseem tsis tau siv qhov tseeb thermoelectric muaj peev xwm e (t, t0) tus nqi txias los txiav txim siab ntsuas qhov ntsuas kub kom pom tseeb ntawm qhov kawg, tab sis nws yuav tsum tau kho kom haum raws li cov cai lij choj ntsuas kub.

Thermocouple ntsuas ntsuas kev ntsuas kev suav, ib daim kab lus xaus lus, "thawj zaug, tom qab ntawd saib lub rooj kom tau qhov kub".