Yuav ua li cas xam qhov rhiab heev ntawm thermocouples

1. Yuav ua li cas xam cov rhiab heev ntawm thermocouples
Qhov rhiab heev ntawm lub thermocouple yog hais txog qhov loj ntawm qhov kev hloov pauv hauv cov zis hluav taws xob hluav taws xob hauv qhov kub hloov pauv. Lub thermocouple yog ib qho hluav taws xob dipole tsim los ntawm ob yam hlau sib txawv, uas ua rau cov nyhuv thermoelectric thiab lub zog hluav taws xob nyob rau hauv qhov kev txiav txim ntawm qhov kub thiab txias. Lub rhiab heev ntawm cov thermocouples muaj feem xyuam rau cov yam ntxwv ntawm lawv cov ntaub ntawv. Yog li cas peb daws tau qhov rhiab heev ntawm thermocouples?

Ua ntej, qhov rhiab heev ntawm lub thermocouple tuaj yeem tau txais los ntawm kev ntsuas qhov sib txawv ntawm cov zis hluav taws xob hluav taws xob nrog qhov kub thiab txias. Los ntawm kev hloov qhov sib txawv ntawm qhov kub thiab txias, qhov sib txawv ntawm cov khoom siv hluav taws xob hluav taws xob tuaj yeem tau txais, yog li suav rhiab heev.

Thib ob, raws li lub hauv paus ntsiab lus ntawm cov nyhuv thermoelectric ntawm thermocouples, qhov rhiab heev ntawm thermocouples tuaj yeem suav nrog cov qauv hauv qab no:

rhiab heev=Δ E/ Δ T

Ntawm lawv, Δ E sawv cev rau tus nqi sib txawv ntawm cov zis hluav taws xob hluav taws xob, Δ T sawv cev rau qhov ntsuas kub hloov pauv. Los ntawm kev ntsuas cov zis electromotive quab yuam nyob rau hauv qhov sib txawv ntawm qhov kub thiab txias, qhov kwv yees tus nqi ntawm rhiab heev tuaj yeem tau txais.

Hauv kev siv tswv yim, tib neeg feem ntau siv qhov sib txawv ntawm qhov ntsuas kub los ntsuas qhov rhiab heev ntawm thermocouples. Cov qauv kub sib txawv yog hais txog kev hloov pauv hauv cov zis hluav taws xob hluav taws xob raws li cov qauv ntsuas kub. Los ntawm kev suav cov kev hloov pauv hauv cov zis hluav taws xob hluav taws xob nyob rau hauv cov qauv kub sib txawv thiab faib nws los ntawm qhov sib txawv ntawm qhov ntsuas kub, qhov rhiab heev ntawm cov thermocouple tuaj yeem tau txais.