Hydrogen processing for energy storage and generation purposes poses unique challenges to the whole supply chain by simultaneously requiring (temperature) measurement at cryogenic, as well as ultra-high temperatures, in addition to high demands on stability and repeatability. Different technologies exist to address these requirements separately, like thermocouples for high temperatures or constant volume gas thermometers for low temperatures. 

We present efforts taken to extend the operational temperature range of our resistance temperature detector (RTD) technology to both higher and lower values than currently possible. Future goal of these efforts is to harness known benefits of RTD technology (reliability, repeatability, accuracy) and set both cryogenic, ambient, and ultra-high temperature measurement on equal footing.