Immersion Characteristics and Reproducibility of the Gold/Palladium Thermocouple
Y-G Kim; K S Gam; K H Kang; Y-G Kim; Division of Quantum Metrology, Temperature Group, Korea Research Institute of Standards and Science, P.O. Box 3, Taedok Science Town, Taejon, Republic of Korea; K S Gam; Division of Quantum Metrology, Temperature Group, Korea Research Institute of Standards and Science, P.O. Box 3, Taedok Science Town, Taejon, Republic of Korea; K H Kang; Division of Quantum Metrology, Temperature Group, Korea Research Institute of Standards and Science, P.O. Box 3, Taedok Science Town, Taejon, Republic of Korea
Журнал:
Metrologia
Дата:
1994-01-01
Аннотация:
Thermoelectric properties of a new gold/palladium (Au/Pd) thermocouple are investigated at the aluminium and silver freezing point cells. The Au/Pd thermocouple generates a high thermal emf and the reproducibility is ±0,2 μV at 961,78 °C. The immersion characteristics of the Au/Pd thermocouple are found to be superior to the conventional type S (Pt-10% Rh/Pt) thermocouple, and it has a larger sensitivity than the extensively studied gold-platinum (Au/Pt) thermocouple. Its easy maintenance and good thermoelectric properties merit serious consideration as an alternative but preferred temperature sensor in the range of 0 °C to 1 000 °C.
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