The kelvin redefinition is a once in a lifetime opportunity to fundamentally change the principles and practice of thermometry. This research is leading the international primary thermometry community, with input from many of the world leading NMIs and institutes.
The focus is on (a) performing thermodynamic temperature measurement in the difficult ranges as identified by the Consultative Committee of Thermometry (CCT) and (b) to support emerging primary thermometry techniques, which will improve our understanding of systematic uncertainties and hence lower the overall uncertainty in the estimates of thermodynamic temperature. It will also develop the background techniques necessary to supersede the defined scales, at least at the extremes of temperature, in the mid-2020s.
The project will lead to a more robust and stable data set for the mise en pratique for the definition of the kelvin (MeP-K) and to provide a firm foundation for the future developments in primary thermometry for realisation and dissemination of the redefined kelvin in the mid-2020’s and beyond. The project is laying the long-term foundation for improving the accuracy of temperature measurements throughout the world for all industries, sectors and disciplines.
Read more about primary thermometry.