Title :
Evaluation of inhomogeneity of Pt/Pd thermocouples
Author :
Ogura, Hideki ; Numajiri, Haruhiko ; Izuchi, Masaya ; Arai, Masaru
Author_Institution :
Nat. Metrology Inst. of Japan, National Inst. of Adv. Industrial Sci. & Technol., Ibaraki, Japan
Abstract :
The inhomogeneity of the Pt/Pd thermocouples annealed at 450/spl deg/C for 10 h and 850/spl deg/C for 100 h were evaluated by scanning the thermocouples in the temperature gradient region of the scanning facility. Through measurement using the scanning facility, the heat treatment temperature that decreases the inhomogeneity and the drift in emf at high temperature may be optimized effectively.
Keywords :
electric potential; optimisation; palladium; platinum; temperature measurement; thermocouples; 10 h; 100 h; 450 degC; 850 degC; Pt-Pd; emf drift; heat treatment temperature; inhomogeneity evaluation; scanning facility; temperature gradient region; thermocouples;
Conference_Titel :
SICE 2003 Annual Conference
Conference_Location :
Fukui, Japan
Print_ISBN :
0-7803-8352-4
