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Self-calibration of a W/Re thermocouple using a miniature Ru-C (1954 °c) eutectic cell

Ongrai, O, Pearce, JV, Machin, G and Sweeney, SJ (2013) Self-calibration of a W/Re thermocouple using a miniature Ru-C (1954 °c) eutectic cell AIP Conference Proceedings, 1552 8. pp. 504-509.

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Previous successful investigations of miniature cobalt-carbon (Co-C, 1324 °C) and palladium-carbon (Pd-C, 1492 °C) high temperature fixed-point cells for thermocouple self-calibration have been reported [1-2]. In the present work, we describe a series of measurements of a miniature ruthenium-carbon (Ru-C) eutectic cell (melting point 1954 °C) to evaluate the repeatability and stability of a W/Re thermocouple (type C) by means of in-situ calibration. A miniature Ru-C eutectic fixed-point cell with outside diameter 14 mm and length 30 mm was fabricated to be used as a self-calibrating device. The performance of the miniature Ru-C cell and the type C thermocouple is presented, including characterization of the stability, repeatability, thermal environment influence, ITS-90 temperature realization and measurement uncertainty.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Ongrai, O
Pearce, JV
Machin, G
Date : 9 October 2013
DOI : 10.1063/1.4821392
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:06
Last Modified : 24 Jan 2020 23:25

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