Txoj kev ntawm kev siv multimeter los xyuas qhov zoo ntawm thermocouple
Thermocouple yog ib qho ntsuas kub feem ntau ntsuas ntsuas hauv cov twj paj nruag ntsuas. Nws ntsuas ncaj qha kub thiab hloov cov teeb liab kub rau hauv qhov kub thiab txias ntawm cov twj ntsuas hluav taws xob (theem nrab seev). Cov tsos ntawm ntau thermocouples feem ntau sib txawv heev vim lawv cov kev xav tau, tab sis lawv cov qauv yooj yim yog ntxig tib yam. Lawv feem ntau yog tsim cov khoom loj xws li cov ntaub ntawv kub, thiab feem ntau yog siv rau cov twj paj nruag, kaw cov twj paj nruag, thiab cov neeg siv hluav taws xob, thiab cov neeg siv hluav taws xob.
Txoj kev ntawm kev siv tshuaj ncau kom tshawb xyuas qhov zoo ntawm thermocouples
1. Ua ntej siv ntau rau kev sim, peb xub soj nrog lub ntsej muag liab qab seb puas corroded yog corroded, nkag mus, lossis xau. Tom qab ntawd siv lub malulataleter los ntsuas kev ntsuas txuas ntxiv. Qhov tsis kam ntawm cov kev sib sau ua ke thermocouple feem ntau tsis muaj ntau dua 2 ohms, thiab qhov tsis kam ntawm lub network cable yog feem ntau tsis loj dua 50 ohms. Feem ntau, yog tias nws yog tus loj dua 1k, nws tuaj yeem txiav txim siab tias nws tau tawg.
2. Ntsuas cov nqi tiv taus nrog tus lej sib xyaw nrog, thiab yog tias cov kev tawm tsam ntau dua 100k, nws pom tau tias yog ua txhaum.
3. Siv cov multimeter ohmermeter ntsuas qhov thermocouple, txuas ob qho kawg, thiab siv lub ntais kom sov nws. Yog hais tias pultimatatimeter pointer tau nce siab lossis txo qis, nws qhia tau tias nws yog qhov zoo. Yog tias tus pointer tsis txav, nws qhia tau tias nws twb tawg. Koj tuaj yeem siv ntau qhov ntau los ntsuas qhov voltage ntawm ob qho kawg hauv millivolt ntau. Yog tias tsis muaj voltage, nws yuav malfunction.
