NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
William M. Pitts, James R. Lawson, John R. Shields
Abstract
This report of test describes a heat-flux gage calibration system that was developed at the National Bureau of Standards during the 1970s. It is based on a commercial radiant heater incorporating a tungsten lamp and elliptical mirror. A kaleidoscope flux redistributor is used to improve the uniformity of the heat flux distribution at the gage surface. The results of recent calibrations for ten heat flux gages are compared with calibrations supplied by the gage manufacturer.
Pitts, W.
, Lawson, J.
and Shields, J.
(2001),
NIST/BFRL CALIBRATION SYSTEM FOR HEAT-FLUX GAGES, Other, National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910735
(Accessed October 2, 2025)