Silent degradation yog hais txog qhov kev poob qis hauv cov thermocouple kev ua tau zoo uas tshwm sim yam tsis ua rau qhib - qhov yuam kev hauv Circuit Court lossis tsis pom tseeb. Nws suav nrog cov teeb liab qeeb qeeb, txo cov lus teb ceev, nce hluav taws xob nrov, thiab teeb meem kev sib txuas me me. Cov kev hloov pauv no tshwm sim ntau lub hlis thiab yuav luag tsis tuaj yeem kuaj pom yam tsis muaj kev calibration. Cov neeg ua haujlwm feem ntau liam cov khoom siv tsis sib xws, pwm hnav, lossis kev hloov pauv ntawm lub tshuab rau qhov tsis zoo, tsis paub txog qhov thermocouple yog drifting.
Kev kub siab -kev ua haujlwm kub, thermal cycling, tshuaj lom neeg raug, thiab kev vibration tag nrho ua kom ntsiag to degradation. Alloy oxidation hloov qhov Seebeck voltage tso zis, thaum micro- tawg hauv MgO core nce suab nrov thiab txo cov lus teb. Nyob rau hauv cov xwm txheej hnyav, drift tuaj yeem tshaj 5℃-8 degree, tag nrho thawb cov txheej txheem sab nraum lub qhov rais ua haujlwm ruaj khov.
Class 1 ntxhia-insulated thermocouples degrade qeeb qeeb vim siab dua -purity alloys thiab robust tsim, tab sis lawv tsis muaj kev tiv thaiv. Tsis tu ncua calibration yog tib txoj kev txhim khu kev qha los txheeb xyuas qhov ntsiag to drift ua ntej nws ua rau poob zoo.
Silent degradation yog ib qho ntawm cov teeb meem kim tshaj plaws hauv kev txhaj tshuaj molding vim nws txo cov txiaj ntsig tau ntev ntev yam tsis muaj kev tshawb pom. Kev nkag siab txog hom kev ua tsis tiav no tso cai rau cov molders siv kev tiv thaiv calibration thiab hloov cov sij hawm, tswj kom ruaj khov zoo thiab tsis txhob xav txog kev poob qis hauv kev tsim khoom.
