Murthy, A.
, Tsai, B.
and Saunders, R.
(2002),
Calibration of a Heat Flux Sensor Up to 200 kW/m<sup>2</sup> in a Spherical Blackbody Cavity, ASTM International, West Conshohocken, PA
(Accessed June 5, 2023)
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.
Calibration of a Heat Flux Sensor Up to 200 kW/m2 in a Spherical Blackbody Cavity
Published
Author(s)
A V. Murthy, ,
Abstract
This paper presents the results of a comparative study of narrow view-angle and wide view-angle calibrations of a water-cooled Schmidt-Boelter heat-flux sensor. The narrow view-angle calibration, up to a heat flux level of 50 kW/m2, was conducted using the 25 mm Variable Temperature Blackbody (VTBB) facility. An electrical substitution standard was used as a transfer standard to determine the flux level at the sensor plane. The wide view-angle calibration was conducted by placing the sensor inside the radiating cavity of a spherical blackbody. The calibration in the spherical blackbody is based on the heat-flux derived from the Stefan-Boltzmann equation using the blackbody temperature measured from a type-S thermocouple. The calibration covered an extended range from 50 kW/m2 to 200 kW/m2. Results of the calibration of the heat-flux sensor using the two different techniques are presented. A discussion of the problems associated with calibrating sensors at high heat-flux levels by inserting the sensor inside a blackbody cavity is also presented.Citation
Thermal Measurements: The Foundation of Fire Standards
Volume
1427
Publisher Info
ASTM International, West Conshohocken, PA
Pub Type
Books
Keywords
blackbodies, heat flux, sensors, thermal radiation
Citation
Created December 31, 2001, Updated October 12, 2021