Calibration of High Heat Flux Sensors at NIST.
Calibration of High Heat Flux Sensors at NIST.
(453 K)
Murthy, A. V.; Tsai, B. K.; Gibson, C. E.
NIST SP 971; August 2001.
NIST SP 971: "Collected Reports and Publications by the
National Institute of Standards and Technology on Heat
Flux Gage Calibration and Usage.", 2001.
Journal of Research of the National Institute of
Standards and Technology, Vol. 102, No. 4, 479-488,
July/August 1997.
Available from:
For More Information on NIST SP 971 visit: WEBSITE:
http://www.bfrl.nist.gov/866/heatflux/index.htm
Keywords:
heat flux; sensors; absolute technique; calibration;
irradiance; transfer technique; uncertainty
Abstract:
An ongoing program at the National Institute of
Standards and Technology (NIST) is aimed at improving
and standardizing heat flux sensor calibration methods.
The current calibration needs of U.S. science and
industry exceed the current NIST capability of 40 kW/m2
irradiance. In achieving this goal, as well as meeting
lower-level non-radiative heat flux calibration needs of
science and industry, three different types of
calibration facilities currently are under development
at NIST: convection, conduction, and radiation. This
paper describes the research activities associated with
the NIST Radiation Calibration Facility. Two different
techniques, transfer and absolute, are presented. The
transfer calibration technique employs a transfer
standard calibrated with reference to a radiometric
standard for calibrating the sensors using a graphite
tube blackbody. Plans for an absolute calibration
facility include the use of a spherical blackbody and a
cooled aperture and sensor-housing assembly to calibrate
the sensors in a low convective environment.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899