Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Intralaboratory Comparison of the Realization of the Triple-point Temperature of Mercury

수은 삼중점 온도 실현의 교정 기관 내 비교

  • Inseok, Yang (Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Young Hee, Lee (Division of Physical Metrology, Korea Research Institute of Standards and Science)
  • 양인석 (한국표준과학연구원 물리표준본부 ) ;
  • 이영희 (한국표준과학연구원 물리표준본부 )
  • Received : 2022.10.29
  • Accepted : 2022.11.22
  • Published : 2022.11.30
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Abstract

An intralaboratory comparison of the realization of the triple-point temperature of mercury, which is defined as -38.8344℃ on the international temperature scale of 1990 (ITS-90), was conducted at the Korea Research Institute of Standards and Science (KRISS), the national metrology institute of Korea. To this end, four triple-point-of-mercury cells were compared using the resistance ratio measurement of a standard platinum resistance thermometer to validate the calibration results obtained using the triple-point-of-mercury cells at KRISS. The triple-point temperatures of all the four cells, one of which is designated as the national standard cell, were within 0.3 mK of the national standard. Based on 13 experiments on the four triple-point-of-mercury cells, the uncertainty in the comparison of the triple-point-of-mercury cells was 0.08 mK, and the uncertainty in the realization of the triple-point temperature of mercury was 0.19 mK. The results of the intralaboratory comparison validated that utilizing any of the four triple-point-of-mercury cells would result in the realization of a temperature within 0.3 mK of the average value determined by two key international comparisons for the realization of -38.3844℃ following the ITS-90.

Keywords

Acknowledgement

이 논문은 2022년도 한국표준과학연구원의 물리 측정표준기술 고도화 재원으로 지원을 받아 수행된 연구임 (한국표준과학연구원 - 2022 - GP2022-0001-10)

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