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Summary of achievements of the European Metrology Research Programme Project 'Implementing the new Kelvin' (InK 1).

Machin, G; Engert, J*; Gavioso, R M*; Sadli, M*; Woolliams, E (2016) Summary of achievements of the European Metrology Research Programme Project 'Implementing the new Kelvin' (InK 1). Measurement, 94. pp. 149-156.

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Abstract

We report a summary of the technical achievements of the European Metrology Research Programme (EMRP) 'Implementing the new Kelvin' (InK 1) project. In short these are:

- The first determination of definitive thermodynamic temperatures for the point of inflection of the high temperature fixed points of Re-C, Pt-C and Co-C as well as a new evaluation of the Cu freezing point.
- The first trial of the new dissemination mechanisms for thermodynamic temperature at high temperatures, as described in the mise en pratique for the definition of the kelvin (MeP-K)
- A new ultra-low uncertainty thermodynamic evaluation of T-T90 from about 30 K to 303 K, with particular emphasis on temperatures around the water triple point (273.16 K)
- The first re-evaluation of T-T2000 from 0.02 K to about 1 K with an uncertainty of <1%

Taken together these results represent a significant advance in primary thermometry. We also give a brief introduction to the successor project (InK 2) and discuss the impact of this work on the kelvin redefinition and next version of the MeP-K (i.e. the MeP-K-19).

Item Type: Article
Keywords: Primary thermometry, Temperature scales, ITS-90, PLTS-2000, kelvin redefinition
Subjects: Engineering Measurements
Engineering Measurements > Thermal
Identification number/DOI: 10.1016/j.measurement.2016.07.069
Last Modified: 02 Feb 2018 13:13
URI: http://eprintspublications.npl.co.uk/id/eprint/7395

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