Interlaboratory Comparison of the Co−C Eutectic Point with Small-Size Cell for Thermocouples

SUMMARY Using a small‐size crucible, interlaboratory comparison of the realization of the Co−C eutectic point was performed in the industrial field in Japan, with the aim of verifying the possibility of thermocouple calibration at the eutectic point with an existing furnace of less‐than‐ideal temper...

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Veröffentlicht in:Electronics and communications in Japan 2014-07, Vol.97 (7), p.48-54
Hauptverfasser: Numajiri, Haruhiko, Sasaki, Masashi, Aikawa, Takao, Sato, Hiroyasu, Kimura, Kazuhiro, Yamasaki, Haruki, Ishii, Juntaro, Yamada, Yoshiro
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container_end_page 54
container_issue 7
container_start_page 48
container_title Electronics and communications in Japan
container_volume 97
creator Numajiri, Haruhiko
Sasaki, Masashi
Aikawa, Takao
Sato, Hiroyasu
Kimura, Kazuhiro
Yamasaki, Haruki
Ishii, Juntaro
Yamada, Yoshiro
description SUMMARY Using a small‐size crucible, interlaboratory comparison of the realization of the Co−C eutectic point was performed in the industrial field in Japan, with the aim of verifying the possibility of thermocouple calibration at the eutectic point with an existing furnace of less‐than‐ideal temperature distribution, namely, the palladium‐point wire‐bridge method furnace for thermocouple calibration. A small‐size crucible for thermocouples was made by the National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology (NMIJ/AIST). The interlaboratory comparison was piloted by the Tokyo Metropolitan Industrial Technology Research Institute (TIRI), a public test and research organization in Tokyo, and was conducted among five calibration laboratories including the pilot. One of the five laboratories is a designated calibration laboratory in Japan, and the other three are private laboratories. Four laboratories including TIRI used an existing palladium‐point furnace, and one laboratory made a new furnace for this interlaboratory comparison.
doi_str_mv 10.1002/ecj.11583
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source Wiley Online Library Journals Frontfile Complete; Business Source Complete
subjects Calibration
Eutectic temperature
fixed-point calibration
Furnaces
Interlaboratory
interlaboratory comparison
metal-carbon eutectic point
Metrology
Pilots
small-size cell
Temperature distribution
thermocouple
Thermocouples
title Interlaboratory Comparison of the Co−C Eutectic Point with Small-Size Cell for Thermocouples
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