Radiation thermometers are calibrated using a range of variable-temperature blackbodies. For heatpipe blackbodies and fluid-stirred blackbodies, the temperatures of these blackbodies are determined using platinum resistance thermometers. These blackbodies can also be assigned temperatures using working standard radiation thermometers. The thermodynamic temperatures of high temperature blackbodies can be determined using detector-based methods.
We offer measurement services for radiance temperature and heat flux sensor calibrations through the NIST Calibration Services.
To order a calibration, see Calibration Services' Radiance temperature measurements.