ERRORS ASSOCIATED WITH THE USE OF HEAT FLOW TRANSDUCERS

Authors
  1. Ducharme, M.B.
  2. Frim, J.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Toronto Univ, Toronto ONT (CAN) Dept of Physiology
Abstract
The direct assessment of heat flux from the body is a basic measurement in thermal physiology. Heat flux transducers (HFTs) are being used increasingly for that purpose under different environmental conditions. However, questions have been raised regarding the accuracy of the manufacturer's constant of calibration, and also about the effect of the thermal resistance of the device on the true thermal flux from the skin. Two different types of waterproofed HFTs were checked for their calibration using the Rapid-K heat flow meter conductivity instrument. The mean difference between the recalibration's and the manufacturer's constants is +20.2 + or - 7.1% (n=15) for Thermonetics Corporation's HFTs (San Diego, CA), and -0.7 + or - 4.8% (n=12) for Concept Engineering's HFTs (Old Saybrook, CT). The significant difference in the error of calibration between the two manufacturers (p<0.001) becomes an important criterion for the selection of HFTs.
Report Number
DCIEM-92-10-P-213 — @Paper presented at the DCIEM Diver Thermal Protection Workshop, North York, Ontario, Canada, 31 Jan - 2 Feb 1989; CONTAINED IN 92-03143
Date of publication
15 Jan 1992
Number of Pages
5 (p213-217)
DSTKIM No
92-03136
CANDIS No
125606
Format(s):
Microfiche filmed at DSIS;Originator's fiche received by DSIS

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