Stock, M; Davidson, S; Fang, H (2022) Dissemination of the kilogram following its redefinition. In: 24th Conference on the Measurement of Force, Mass and Torque (together with the 14th TC5 Conference on the Measurement of Hardness, the 6th TC16 Conference on Pressure and Vacuum Measurement, and the 5th TC22 Conference on Vibration Measurement), 11-13 October 2022, Cavtat-Dubrovnik, Croatia.

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Abstract

On 20 May 2019 a new definition of the SI unit of mass, the kilogram, came into force. The kilogram is now defined based on a fixed numerical value of the Planck constant. This leads to a new situation for mass metrology that in principle every National Metrology Institute can realize the kilogram. To ensure global uniformity, the Consultative Committee for Mass and Related Quantities (CCM) recommended that during an initial phase the dissemination of the kilogram shall be internationally coordinated, by basing it on a so-called ‘Consensus Value’. This paper describes the different phases of the dissemination of the kilogram, the determination of the Consensus Value and its impact on national mass scales. The paper concludes with an outlook on future developments of kilogram realisation and dissemination techniques.

Item Type:	Conference or Workshop Item (Paper)
Keywords:	mass, kilogram, redefinition, dissemination
Subjects:	Engineering Measurements > Mass, Force, Pressure
Divisions:	Materials and Mechanical Metrology
Identification number/DOI:	10.21014/tc3-2022.011
Last Modified:	10 Sep 2024 09:58
URI:	https://eprintspublications.npl.co.uk/id/eprint/10006