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http://dx.doi.org/10.7731/KIFSE.2018.32.4.001

Measurement Bias of Heat Flux Gauge based on Calibration Constant supported by Manufacturer  

Kim, Sung-Chan (Dept. of Fire Safety, Kyungil Univ.)
Hamins, Anthony (Fire Research Div., NIST)
Publication Information
Fire Science and Engineering / v.32, no.4, 2018 , pp. 1-6 More about this Journal
Abstract
As a preliminary study to quantify the measurement uncertainty of the Schmidt-Boelter type heat flux gauge, the present study has been conducted to evaluate the measurement error due to the calibration constant supported by manufacturer. Calibrations of heat flux gauges are performed at NIST Fire Research Division using a calibration facility with heat source of a 2000 W halogen-tungsten filament lamp and the calibration constant is obtained by comparing the response of the reference and a standard heat flux gauge at the same irradiance conditions. Calibration for heat flux gauges made by three different manufacturers is compared with their factory calibration constant. Relative error due to fluctuation of output signal from heat flux gauges does not exceed 1% of the mean value and the relative error between calibration of this study and factory calibration constant ranged from 1.5% to 14.3%. The present study shows that a continuous and periodic calibration is necessary for accurate heat flux measurement.
Keywords
Heat flux; Heat flux gauge; Calibration; Fire safety; Fire metrology; Schmidt-Boelter;
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