가스압력조절식 나트륨 열관전기로를 이용한 은 고정점 실현과 고온백금저항온도 계측에의 응용
Realization of silver fixed-point and application for the high temperature platinum resistance thermometry using the gas-pressure controlled sodium heat-pipe furnace
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Pressure-controlled sodium heat pipe furnace was designed and fabricated, and its characteristics was investigated. Pressure control system was controlled within ± 0.5 Pa at 150 kPa and the stability of pressure was decreased to ± 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 ± 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.
Abstract
Pressure-controlled sodium heat pipe furnace was designed and fabricated, and its characteristics was investigated. Pressure control system was controlled within ± 0.5 Pa at 150 kPa and the stability of pressure was decreased to ± 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 ± 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.
참고문헌 (7)
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