Cov qauv kev lag luam cuam tshuam li cas rau Thermocouple Performance?

Lub workhorses ntawm qhov ntsuas kub hauv ntau hom kev lag luam yog cov thermocouples. Cov qauv kev lag luam cuam tshuam rau lawv cov kev ua tau zoo txawm tias lawv cov qauv tsim thiab cov ntaub ntawv txhais tau tias nws. Txhua lub hauv paus ntawm cov khoom siv thermocouple, calibration, thiab kev siv tau zoo li cov qauv no, uas tseem tuaj yeem lav qhov ntsuas kub zoo sib xws.
Cov qauv kev lag luam pib pib ua haujlwm thaum lub sijhawm ua khoom siv thermocoule. Lawv sau cov ntaub ntawv ntau yam uas yuav tsum tau siv rau ntau hom kev siv thermocouple. Rau hom K thermocouple, uas yog siv dav hauv kev saib xyuas qhov kub thiab txias, piv txwv li, tus qauv qhia meej meej muaj pes tsawg leeg ntawm nickel-chromium thiab nickel- aluminium alloys rau ob lub xov hlau. Cov khoom siv tshwj xeeb no tseem ceeb heev vim tias qhov kev hloov pauv tuaj yeem cuam tshuam rau Seebeck coefficient, cov yam ntxwv tseem ceeb uas txhais tau tias qhov hluav taws xob tsim tawm ib chav ntsuas kub sib txawv. Yuav tsum tau siv cov ntaub ntawv sub-standard, qhov tso zis hluav taws xob ntawm lub thermocouple yuav tsis haum qhov ntsuas kub, yog li ua rau kev ntsuas yuam kev. Ua raws li cov khoom yuav tsum tau ua kom ntseeg tau tias lub thermocouple "suab" qhov tseeb qhov kub thiab txias "tune," ib yam li cov twj paj nruag zoo tsim tsim suab paj nruag.
Tseem muaj lwm yam tseem ceeb yog cov txheej txheem calibration. Cov qauv kev lag luam muab cov txheej txheem thiab kev siv ntsuas kub rau thermocouley calibration. Calibration guarantees tias lub thermocouple taw qhia rau qhov tseeb qhov kub thiab txias, ib yam li lub nkoj lub compass lav. Kev siv cov ntsuas kub zoo tshaj plaws yog siv, piv txwv li, ib qho qauv hauv chav kuaj ntsuas kom ntsuas cov ntsuas kub ntawm qee qhov ntsuas kub hauv lawv qhov kev ua haujlwm. Cov txheej txheem no lav tias tag nrho cov thermocouples ntawm tib yam muab kev nyeem zoo ib yam thiab txiav txim siab txog kev tsim khoom sib txawv. Thermal cycling thiab mechanical stress ua rau lub thermocouple qhov tseeb mus rau lub sijhawm tsis muaj kev ntsuas tsim nyog raws li cov qauv kev lag luam. Hauv kev lag luam kev lag luam xws li kev tsim cov hlau, qhov tseeb qhov ntsuas kub thaum lub sijhawm kho cua sov yog qhov tseem ceeb, ib qho thermocouple uncalibrated yuav ua rau cov khoom uas tsis zoo txhua yam zoo li qhov kub thiab txias thoob plaws hauv cov txheej txheem yuav overestimated.
Tsis tas li ntawd cuam tshuam rau kev ua tau zoo yog qhov standardizing ntawm thermocouple hlau qhov ntau thiab tsawg. Txawm hais tias lawv muaj cov thermal loj dua, cov xov hlau nyias nyias yuav muaj zog dua thiab muaj peev xwm tswj tau cov dej ntws ntau dua. Lawv thiaj li hnov ​​​​mob qeeb dua rau kev hloov pauv hauv qhov kub thiab txias. Th thinner xov hlau, ntawm qhov tod tes, tuaj yeem nkig ntau dua tsis tau muaj cov cua sov tsawg dua thiab hnov ​​​​mob sai. Cov qauv kev lag luam piav qhia txog qhov dav dav dav rau kev siv ntau yam, yog li pab nrhiav kev sib haum xeeb. Lub thermocouple nrog ib txoj kab uas hla uas qhia los ntawm cov qauv rau lub sij hawm teb luv luv yuav yog qhov tseem ceeb hauv cov txheej txheem tshuaj ceev ceev uas yuav tsum tau saib xyuas qhov kub thiab txias. Txawm hais tias lub thermocouple yuav tsis tuaj yeem ua raws li qhov kub thiab txias hloov, ua rau kev nyeem ntawv tsis raug, lossis nws tuaj yeem tawg tau yooj yim nyob rau hauv cov xwm txheej khiav yog tias siv txoj kab uas hla tsis raug.
Qhov tseem ceeb sib npaug yog cov thermocouley installation thiab txuas cov txheej txheem. Cov txheej txheem tau lees paub qhov tseeb kev teeb tsa ntawm lub thermocouple los muab kev tiv thaiv thermal zoo nrog cov khoom lossis nruab nrab hauv kev ntsuas. Lub thermocouple yuav tsum tau muab tso rau ntawm qhov tob kom zoo nyob rau hauv cov kua dej kom tsis txhob muaj qhov kub thiab txias ntawm lub thawv phab ntsa uas cuam tshuam rau nws. Yog tias kev teeb tsa sib txawv ntawm cov lus qhia tau pom zoo, cov teeb meem hloov hluav taws xob tuaj yeem ua rau lub thermocouple ntsuas qhov kub ntawm qhov sib txawv ntawm cov kua dej qhov ntsuas kub. Tsis tas li ntawd tswj cov thermocouple cov hlau rau lub ntsuas ntsuas yog cov qauv kev sib txuas. Kev sib txuas tsis zoo tuaj yeem ua rau muaj kev tiv thaiv lossis hluav taws xob nrov, yog li cuam tshuam cov teeb liab kub. Nyob rau hauv ib lub tshuab fais fab, qhov kev ua haujlwm zoo nyob ntawm qhov ntsuas kub ntawm qhov cub hauv turbines, kev teeb tsa tsis raug lossis kev sib txuas ntawm cov thermocouples yuav ua rau muaj kev tswj tsis raug ntawm cov dej ntws thiab qis zog tsim kom muaj txiaj ntsig.
Tsis tas li ntawd cuam tshuam rau kev tiv thaiv ib puag ncig txuas nrog thermocouples yog cov qauv kev lag luam. Rau cov xwm txheej uas siv cov thermocouples hauv kev ua zaub mov lossis chaw kho mob, piv txwv li, muaj cov lus qhia ntawm cov ntaub ntawv siv los lav tias lawv muaj kev nyab xeeb thiab tsis cuam tshuam rau cov khoom lossis cov neeg mob. Yog tias cov ntaub ntawv ntawm cov thermocouple sib txawv ntawm cov txheej txheem kev nyab xeeb hauv cov txheej txheem pasteurization zaub mov, cov khoom txaus ntshai tuaj yeem nkag mus rau hauv cov zaub mov. Hauv kev siv tshuaj kho mob zoo li kev ntsuas lub cev kub thaum lub sijhawm ua haujlwm, cov thermocouple yuav tsum ua raws li cov txheej txheem biocompatibility nruj kom tsis txhob muaj qhov tsis zoo hauv tus neeg mob lub cev.
Thaum kawg, cov qauv kev lag luam tsim lub hauv paus pob zeb raws li qhov kev cia siab ntawm thermocouple kev ua tau zoo raws li. Los ntawm kev tsim khoom mus rau kev teeb tsa thiab kev siv, lawv nkag mus rau txhua kauj ruam thiab tswj cov ntaub ntawv, calibration, hlau txoj kab uas hla, installation cov txheej txheem, thiab ib puag ncig yam. Ua raws li cov txheej txheem no nruj me ntsis pab cov lag luam kom lav tias cov thermocouples muab qhov ntsuas kub thiab qhov ntsuas kub tsis tu ncua, yog li tso cai rau kev khiav haujlwm ntawm kev lag luam sib txawv thiab yog li khaws cia cov neeg siv khoom noj qab haus huv thiab cov khoom zoo.