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Radiative Calibration of Heat Flux Sensors at NIST: Facilities and Techniques



A V. Murthy, Benjamin K. Tsai, Robert D. Saunders


An overview of the National Institute of Standards and Technology (NIST) high temperature blackbodies, both in operation and in development, suitable for heat flux sensor calibration is presented. Typical results of calibrations using the transfer technique in the 25-mm Variable Temperature Blackbody (VTBB) are presented to demonstrate the long-term repeatability of the calibrations of a Gardon gage in a spherical blackbody with cooled enclosure for gage housing was conducted. Results of this study demonstrated the influence of convection associated with absolute calibration of sensors in a cooled-enclosure. Plans for further development of the transfer technique to higher heat flux levels and the associated technical issues are discussed.
Journal of Research (NIST JRES) -
105 No. 2


blackbody, calibration, heat flux, radiometer, sensor


Murthy, A. , Tsai, B. and Saunders, R. (2000), Radiative Calibration of Heat Flux Sensors at NIST: Facilities and Techniques, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD (Accessed May 19, 2024)


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Created February 29, 2000, Updated October 12, 2021