The project will test primary thermometry approaches at temperatures greater than 1300 K and less than 25 K to kick-start the process of making these methods competitive. It will also extend the life of the currently defined scale to allow time for primary methods to develop, identify a replacement for the mercury triple point and reduce the uncertainties of the calculated thermophysical properties of monatomic gases used in gas-based primary thermometry. The ultimate goal is that primary thermometry will be the basis of temperature traceability throughout the entire range. Easing the transition to primary thermometry in this way should enable in-situ traceability at lower cost, in applications such as remote monitoring in manufacturing and the nuclear power sector.
Contributing scientific sectors
