Skip to main content
U.S. flag

An official website of the United States government

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.

Transfer Calibration Validation Tests on a Heat Flux Sensor in the 51 mm High-Temperature-Blackbody



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


Facilities and techniques to characterize heat flux sensors are under development at the National Institute of Standards and Technology. As a part of this effort, a large aperture high-temperature blackbody was commissioned recently. The graphite tube blackbody, heated electrically, has a cavity diameter of 51 mm and can operate up to a maximum temperature of 2773 K. A closed-loop cooling system using a water-to-water heat exchanger cools electrodes and the outer reflecting shield. This paper describes the newly developed blackbody facility and the validation tests conducted using a reference standard Schmidt-Boelter heat flux sensor. The transfer calibration results obtained on the Schmidt-Boelter sensor agreed with the previous data within the experimental uncertainty limits.
Proceedings Title
Proceedings of the 47th International Instrumentation Symposium
Conference Dates
May 9-10, 2001
Conference Location
Conference Title
Instrumentation and Measurement Technology Conference


blackbodies, heat flux, sensors, thermal radiation, transfer calibration


Murthy, A. , Tsai, B. and Saunders, R. (2001), Transfer Calibration Validation Tests on a Heat Flux Sensor in the 51 mm High-Temperature-Blackbody, Proceedings of the 47th International Instrumentation Symposium, Undefined (Accessed December 9, 2023)
Created April 30, 2001, Updated October 12, 2021