A PARADIGM CHANGE IN HIGH TEMPERATURE METROLOGY

Graham Machin

Abstract

The measurement of temperatures above 1100 °C is undergoing a step change improvement with the development of high temperature fixed-points and improved thermocouple types such as Pt/Pd. This paper reviews international developments in these areas that could lead to an improved way of realising ITS-90 above the Ag point, reduced thermocouple uncertainties by factors of two or more, and improved dissemination and measurement of high temperatures to industry.

Keywords

pyrometry, high temperature fixed-points, metal-carbon eutectics, thermocouples

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PWC-2006-TC12-005u.pdf

DOI

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IMEKO TC

TC12 - Temperature and Thermal Measurements

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