Chongqing  Haichen  instrument  Co.,  Ltd

Yooj yim Overlooked teeb meem thaum lub sij hawm Thermocouple Verification

Nov 03, 2021

Thaum kuaj xyuas cov thermocouples, cov neeg ua haujlwm pov thawj feem ntau tuaj yeem pom thiab tswj cov ntaub ntawv ntsuas tsis raug tshwm sim los ntawm cov teeb meem tshwm sim xws li lub davhlau ya nyob twg tsis muaj kev ntseeg siab, thermocouple luv Circuit Court lossis pob sib txawv los ntawm qhov chaw geometric hauv lub sijhawm, tab sis nws yog ib qho yooj yim kom tsis quav ntsej txog qee qhov teeb meem cuam tshuam rau lub sijhawm. nrhiav pom tau.

1. Qhov ntev ntawm lub thermocouple

JJG351-1996" Cheap Hlau Thermocouples rau Kev Ua Haujlwm" qhia meej meej tias qhov ntev ntawm cov thermocouples yuav tsum tsis pub tsawg tshaj 750mm. Yog vim li cas rau kev qhia txog qhov ntev ntawm cov thermocouples yog yuav tsum tau coj mus rau hauv tus account tias lub thermocouple yuav tsum muaj qhov dav txaus kub tom qab tawm hauv qhov ntsuas kub. Gradient cheeb tsam. Lub thermoelectromotive quab yuam ntawm lub thermocouple kuj tsim nyob rau hauv cheeb tsam no. Txhawm rau tiv thaiv kom tsis txhob muaj cua sov los ntawm qhov kub kawg ( ntsuas qhov kawg) ntawm cov thermocouple los ntawm kev xa mus rau qhov txias kawg (terminal), txoj kev yooj yim tshaj plaws yog qhov txias kawg ntawm lub thermocouple muaj txaus kom deb ntawm qhov kub kawg. Feem ntau hais lus, qhov yuam kev tshwm sim los ntawm qhov tsis txaus thermocouple ntev yog qhov tsis zoo, thiab qhov kev kho tus nqi yog qhov zoo. Qhov luv luv, qhov ntau dua qhov ua yuam kev. Yog li ntawd, qhov ntev ntawm lub thermocouple yuav tsum tau txiav txim siab ua ntej qhov kev ntsuam xyuas qhov cub.

2. Lub thermocouple hlau yog khoov

Lub thermocouple hlau yog nyias thiab mos, thiab nws yooj yim deformed. Thaum lub thermocouple xaim ntawm lub thermoelectrode muaj kev ntxhov siab vim yog cov yas deformation xws li folding thiab twisting ntawm cov thermocouple hlau, cov yam ntxwv ntawm cov thermocouple hloov pauv, yog li qhov kev ntsuas ntawm qhov deformed thermocouple yog qhov tseeb. cuam ​​tshuam. Yog li ntawd, lub thermocouple hlau yuav tsum ncaj nraim ua ntej kev txheeb xyuas.

3. Lub thermocouple hlau tsis muaj kab mob

Yog hais tias lub thermocouple hlau tsis muaj kab mob los yog txawm oxidized, qhov chaw ntawm lub thermocouple hlau yuav tsaus, tsaus thiab dub. Lub sijhawm no, cov yam ntxwv ntawm cov thermoelectric ntawm cov thermoelectrode yog qhov tsis ruaj khov, thiab qhov tseeb ntawm cov ntaub ntawv ntsuas tsis zoo. Yog li ntawd, nws yuav tsum tau ntxuav thiab polluted. Cov electrode tshem tawm cov pa phem txheej.

4. Qhov cuam tshuam ntawm lub sijhawm teb

Lub hauv paus ntsiab lus ntawm kev ntsuas qhov kub thiab txias yog qhov ntsuas qhov ntsuas kub yuav tsum ncav cuag thermal sib npaug nrog cov khoom ntsuas. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tswj xyuas qee lub sijhawm thaum ntsuas kub kom ua tiav qhov sib npaug ntawm qhov sib npaug ntawm ob. Qhov ntev ntawm lub sijhawm tuav yog cuam tshuam nrog lub sijhawm thermal teb ntawm qhov ntsuas qhov ntsuas kub. Lub sij hawm teb thermal feem ntau yog nyob ntawm tus qauv ntawm lub sensor thiab cov kev ntsuas ntsuas, uas txawv heev. Yog li ntawd, nyob rau hauv cov txheej txheem kev txheeb xyuas txhua hnub, tus nqi cua sov tsim nyog thiab lub sij hawm thermal equilibrium yuav tsum raug xaiv raws li ntau hom thermocouples.

5. Kev cuam tshuam ntawm rwb thaiv tsev tsis kam

Thaum qhov kub thiab txias, qhov rwb thaiv tsev ntawm lub thermocouple txo qis thaum kub nce, yog li qhov hluav taws xob yuav tshwm sim. Qhov tam sim no ntws mus rau hauv lub 'meter' los ntawm cov rwb thaiv tsev uas nws cov rwb thaiv tsev tiv thaiv tau poob, ua rau lub meter tsis ruaj khov lossis ua rau kev ntsuas yuam kev. Yog li ntawd, tsis txhob hnov ​​​​qab txog kev ntsuas kev tiv thaiv hluav taws xob ntawm lub thermocouple ua ntej txhim kho lub qhov cub. Tsuas yog thaum qhov yuav tsum tau ua ntawm cov cai pov thawj tau ua tiav, tuaj yeem ua tiav qhov ntsuas ntsuas qhov ntsuas kub.


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