Title :
Study on the reliability of comparison method for thermocouples in industry around 1324 °C
Author :
Ogura, Hideki ; Numajiri, Haruhiko ; Kobayashi, Tadashi
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol., (AIST), Nat. Metrol. Inst. of Japan (NMIJ), Tsukuba, Japan
Abstract :
To examine the reliability of thermocouple comparison in industry at high temperature, thermocouple comparison measurements were performed around 1324°C in nine laboratories by using two Pt/Pd thermocouples and one type R thermocouple following calibration at Co-C eutectic point. It was found that the standard deviations of the emf values of the Pt/Pd-2 (one of the Pt/Pd thermocouples) and type R thermocouples among nine participating laboratories were 4.2 μV (0.2°C) and 5.0 μV (0.4°C), respectively.
Keywords :
calibration; palladium; platinum; reliability; thermocouples; Co-C eutectic point; Pt-Pd; Pt/Pd thermocouples; R thermocouple; calibration; reliability; standard deviations; thermocouple comparison measurements; Atmospheric measurements; Calibration; Industries; Laboratories; Nonhomogeneous media; Particle measurements; Temperature measurement; Co-C eutectic point; Pt/Pd thermocouple; comparison measurement; type R thermocouple;
Conference_Titel :
SICE Annual Conference (SICE), 2011 Proceedings of
Conference_Location :
Tokyo
Print_ISBN :
978-1-4577-0714-8
