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Construction and investigation of PT/PD thermocouples in the frame of the EUROMET project 857.

Edler, F*; Morice, R*; Pearce, J (2008) Construction and investigation of PT/PD thermocouples in the frame of the EUROMET project 857. Int. J. Thermophysics, 29 (1). pp. 199-209.

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Abstract

The objective of the EUROMET project 857 in the field of thermometry, "High temperature fixed points for improved thermocouple calibrations", is the development of robust high temperature fixed points based on metal-carbon eutectic alloys for the calibration of thermocouples above 1084 °C. This paper describes the construction and investigation of Pt/Pd thermocouples to be used to compare different cobalt-carbon (Co-C) fixed-point cells constructed by the three participants of this project. A set of three Pt/Pd thermocouples (four, LNE) was prepared in the participating laboratories. Their metrological performances in terms of thermoelectric stability and homogeneity were assessed in different ways. The results of these investigations as well as the results of first measurements at local Co-C eutectic fixed-point cells by using the Pt/Pd thermocouples are presented.

Item Type: Article
Keywords: metrology, heat transfer, temperature, phase transitions, melting
Subjects: Engineering Measurements
Engineering Measurements > Thermal
Last Modified: 02 Feb 2018 13:15
URI: http://eprintspublications.npl.co.uk/id/eprint/4083

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