Yuav ua li cas calibration taag-point ntawm thermocouples

Thermocouple calibration laboratory calibrates cov nram qab no hom thermocouples:
Qhov tseem ceeb hlau
Cov tsiaj ntawv (E, J, K, N, T)
Qhia cov ntawv tsis yog (W/Re, Ir/Rh, Pt/Rh)
Precious hlau (S, R, B)
Cov hlau ntshiab (Au/Pt, Pt/Pd)
Tag nrho cov kev pabcuam calibration rau cov hom thermocouples uas nquag siv yog muab los ntawm NIST nyob rau hauv thaj tsam ntawm -196 degree C txog +2100 degree C. Qhov tshwj xeeb kub ntau rau calibration yog nyob ntawm hom xaim lossis thermocouple xa.
Thermocouples tuaj yeem muab piv los yog kho qhov taw qhia calibrated, nyob ntawm seb hom thermocouple, qhov kub thiab txias, thiab qhov yuav tsum tau muaj. Ob txoj kev tuaj yeem taug qab mus rau International Temperature Scale (ITS{0}}) hauv xyoo 1990. Kev sib piv ntawm cov xov hlau thermocouple yog siv rau hauv NIST kev tiv thaiv ntawm kev siv thermocouples. Cov ntsiab lus calibration ruaj khov ntawm cov thermocouples siv plaub qhov ntsuas kub ntawm ITS -90: cov ntsiab lus solidification ntawm zinc, txhuas, nyiaj, thiab kub.
Tom qab siv thawj lossis thib ob txoj kev, xa mus rau tus qauv Pt-67 kuaj ib ceg thermocouples rau platinum thermoelectric li tswj los ntawm NIST.
NIST thermocouple calibration tsuas yog xav tau cov xov hlau liab xwb. Peb cia siab tias cov neeg siv khoom yuav tsis xa cov khoom siv hluav taws xob ceramic thiab cov raj tiv thaiv vim tias lawv yuav raug puas tsuaj thaum thauj. Yog hais tias lub thermocouple raug thauj mus rau hauv lub rooj zaum mounting xws li cov khoom tiv thaiv tube, cov nqi tshwj xeeb disassembly yuav raug them, thiab cov khoom yuav raug xa rov qab tsis sib xws.
Qhov ntev ntawm cov thermocouple xov hlau xa mus rau calibration yuav tsum yog tsawg kawg:
Sib piv calibration
E-hom, J-hom, K-hom, N-hom, T-hom, S-hom, 70 hom
B-hom yog 80 centimeters
W / Re yog 100 centimeters
Tsau taw tes calibration -100 centimeters
Rau lub hauv paus hlau thermocouples (E, J, K, N, thiab T hom) thiab cov khoom siv thermocouple, tsuas yog cov thermocouples uas tsis siv tau tuaj yeem tiv thaiv kev sim. Calibration yuav tsuas yog ua thaum lub thermocouple tuaj yeem ncav cuag qhov raug.