Calibration yog qhov tseem ceeb, tab sis qhov zaus ntawm calibration yog kev txiav txim siab ua lag luam. Txhua qhov chaw calibrates thermocouples txawv. Qee tus ua txhua xyoo, qee lub hlis twg, qee qhov tsis tau. Txoj cai zaus sib npaug tus nqi ntawm calibration tiv thaiv tus nqi ntsuas qhov yuam kev.
Tus nqi ntawm Calibration
Calibration nqi sij hawm thiab nyiaj txiag. Yog tias koj muaj nyob rau hauv -tsev calibration lab, tus nqi yog cov kws tshaj lij kev ua haujlwm thiab cov khoom siv siv. Yog tias koj xa cov sensors tawm, tus nqi yog shipping, tuav, thiab nqi kuaj. Rau qhov chaw loj nrog ntau pua lub thermocouples, kev ntsuas txhua xyoo tuaj yeem yog tus nqi tseem ceeb. Txiav qhov zaus hauv ib nrab txo cov nqi, tab sis qhov kev pheej hmoo dab tsi?
Tus nqi ntsuas yuam kev
Ib qho thermocouple uas tsis tau ntsuas tuaj yeem txav 2-5℃ib xyoos twg. Rau cov khoom siv nrog 10℃ua qhov rais, qhov drift siv 20-50% ntawm koj kam rau ua. Cov teeb meem zoo, seem, thiab rov ua dua tshiab yog cov nqi ntawm qhov tsis raug kho. Yog tias koj tus nqi seem yog 1%, thiab cov thermocouple drift ntxiv 0.5%, qhov ntawd yog qhov nyiaj tau los tseem ceeb. Tus nqi ntawm calibration feem ntau tsawg dua tus nqi ntawm cov teeb meem zoo uas nws tiv thaiv.
Txheej txheem Criticality
Lub calibration zaus yuav tsum muaj kev cuam tshuam qhov tseem ceeb ntawm daim ntawv thov. Kev kho mob thiab cov khoom siv tsheb yuav tsum muaj kev tiv thaiv nruj; calibrate peb lub hlis twg los yog ib hlis. Cov khoom ntim rau cov khoom siv yuav zoo nrog rau kev ntsuas txhua xyoo. Yog tias 2℃drift tau txais hauv koj cov txheej txheem, calibrate tsawg dua. Yog tias 1℃drift ua rau qhov tsis ua haujlwm, calibrate ntau zaus.
Cov ntaub ntawv keeb kwm
Yog tias koj taug qab cov txiaj ntsig calibration, koj yuav pom qhov sib txawv. Yog tias koj cov sensors tsis tu ncua dhau calibration (hauv 1 degree), koj tuaj yeem ncua lub sijhawm. Yog tias lawv tsis tu ncua (nrhiav ntau dua 2 degree), koj xav tau lub sijhawm luv luv lossis zoo dua sensors. Siv cov ntaub ntawv keeb kwm los kho lub sijhawm, tsis yog cov hnub ua haujlwm tsis raug cai.
Cov ntaub ntawv "Raws li pom".
Thaum koj calibrate, sau qhov "raws li pom" nyeem ua ntej kev hloov kho. Qhov no qhia koj ntau npaum li cas lub sensor drifted txij li thaum kawg calibration. Yog tias qhov drift tsis tu ncua me me, koj tuaj yeem ua kom ntev lub sijhawm. Yog hais tias lub drift loj, shorten nws. Cov ntaub ntawv no - tsav mus kom ze yog siv tau ntau dua li kev kwv yees.
Calibration vs. Hloov
Yog hais tias lub thermocouple yog drifting ntau tshaj 2℃ib xyoo, nws yog nyob ze rau qhov kawg ntawm nws lub neej. Calibrating nws tsis kho qhov drift - nws tsuas yog them rau nws. Xyoo tom ntej, nws yuav dhia ntau dua. Qee lub sij hawm, kev hloov pauv yog tus nqi ntau dua - ua haujlwm zoo dua li rov ntsuas dua. Siv cov txiaj ntsig calibration los txiav txim siab thaum hloov.
Cov lus pom zoo
Pib nrog kev ntsuas peb lub hlis twg rau cov cheeb tsam tseem ceeb, ib nrab -ib xyoos rau cov qauv zones, thiab txhua xyoo rau cov cheeb tsam tsis tseem ceeb. Tom qab ob xyoos, tshuaj xyuas cov ntaub ntawv thiab kho. Koj yuav pom tau tias ntau thaj chaw tuaj yeem ntsuas tsawg dua, txuag sijhawm thiab nyiaj txiag.
