A new version of the guideline DKD-R 5-1 Calibration of resistance thermometers has been published. It replaces all previous versions of DKD-R 5-1. The transition period for implementation of the new version ends on 30 November 2026.
The guideline can be found here:
https://www.ptb.de/cms/en/metrological-services/dkd/publications.html