CCT Working Group for Non-Contact Thermometry (CCT-WG-NCTh)

Terms of reference

The terms of reference of the CCT-WG-NCTh are to study and provide definitive advice to the CCT on issues related to thermal radiation and other approaches underlying non-contact temperature measurements.

WG-NCTh is tasked with:

• Review and report on measurements of T- T₉₀ and associated fixed points by means of primary non-contact thermometry;
• Review research and application of non-contact thermometry primary thermometers to realise the kelvin;
• Review and advise CCT on research related to high-temperature fixed points;
• Provide appropriate input, including revisions, into the mise en pratique for the definition of the kelvin;
• Provide, where required, updates for a) the supplementary information and b) approximating techniques as regards the ITS-90;
• Support world-wide efforts in standardization of radiation thermometer and thermal imager testing and calibration;
• Develop appropriate uncertainty budgets for radiation thermometry;
• Recommend key comparisons relevant to WG-NCTh and to the CCT;
• Develop, when required, guidance for measurement best practice for secondary/novel non-contact thermometry techniques (e.g. phosphor, gold-cup thermometry, flame and plasma thermometry);
• Lead a key comparison of calibrators for body temperature thermometers (ear/forehead/thermal imagers);
• Work with appropriate standardisation bodies (e.g. ISO/IEC) concerned with producing standards for body temperature measurement devices.