Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

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.

Radiance temperature calibration laboratory

Radiance Temperature Calibration Laboratory is used for the calibration of radiation thermometers, tungsten-strip lamps and heat flux gauges.

Specifications/Capabilities

A radiation thermometer centered at 655.3 nm is calibrated using the detector-based temperature of a gold freezing temperature blackbody. The temperature scale is maintained using a vacuum strip lamp, and the temperature of a 25.4 mm diameter variable-temperature blackbody (VTBB) is assigned by comparisons using the radiation thermometer. This high emissivity (> 0.9985) VTBB is also used for heat flux gauge calibrations.

Created January 29, 2010, Updated November 15, 2019