Title :
Thermoelectric stability of Pt/Pd thermocouples around 1500 °C
Author :
Ogura, Hideki ; Izuchi, Masaya ; Tamba, Jun ; Arai, Masaru
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol. (AIST), Nat. Metrol. Inst. of Japan (NMIJ), Tsukuba, Japan
Abstract :
The emf-change of Pt/Pd thermocouples at the Cu fixed point (1084.62°C) were measured as a function of the exposure time at 1500°C, and then in-situ drifts of Pt/Pd thermocouples were examined at the Pd-C eutectic point (1492°C) to evaluate thermoelectric stability around 1500°C. It was found that the emf-change of Pt/Pd thermocouples were dependent on the baking conditions for alumina tubes and baking the alumina tubes in vacuum at 1600°C was effective to decrease the emf-change.
Keywords :
alumina; thermal stability; thermocouples; thermoelectricity; voltage measurement; Cu; Pd-C; Pt-Pd; alumina tube; baking condition; emf-change measurement; eutectic point; temperature 1500 degC; thermocouple; thermoelectric stability; Annealing; Copper; Electron tubes; Furnaces; Temperature measurement; Thermal stability; Wires; Pd-C eutectic point; Pt/Pd thermocouple; alumina tube; drift;
Conference_Titel :
SICE Annual Conference 2010, Proceedings of
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-7642-8
