Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Realization of silver fixed-point and application for the high temperature platinum resistance thermometry using the gas-pressure controlled sodium heat-pipe furnace

가스압력조절식 나트륨 열관전기로를 이용한 은 고정점 실현과 고온백금저항온도 계측에의 응용

  • Gam, K.S. (Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Choi, I.M. (Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Yang, I. (Division of Physical Metrology, Korea Research Institute of Standards and Science) ;
  • Kim, Y.G. (Division of Physical Metrology, Korea Research Institute of Standards and Science)
  • 감기술 (한국표준과학연구원 기반표준본부) ;
  • 최인묵 (한국표준과학연구원 기반표준본부) ;
  • 양인석 (한국표준과학연구원 기반표준본부) ;
  • 김용규 (한국표준과학연구원 기반표준본부)
  • Published : 2009.03.31
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Abstract

Pressure-controlled sodium heat pipe furnace was designed and fabricated, and its characteristics was investigated. Pressure control system was controlled within ${\pm}0.5\;Pa$ at 150 kPa and the stability of pressure was decreased to ${\pm}2.5\;Pa$, when the pressure-controlled system connected with the heat pipe. The melting curve of Ag fixed-point realized well by the adiabatic method using the pressure-controlled sodium heat pipe furnace and its accuracy showed ${\pm}2.27\;mK$ from the calculation of 20% to 80% at the plateau. The freezing curve of Ag fixed-point also realized and its plateau value was 2.23 mK lower than that of the melting curve.

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References

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