Calibration of Thin Heat Flux Sensors for Building Applications Using ASTM C 1130.
Calibration of Thin Heat Flux Sensors for Building
Applications Using ASTM C 1130.
Zarr, R. R.; Martinez-Fuentes, V.; Filliben, J. J.;
Dougherty, B. P.
Journal of Testing and Evaluation, Vol. 29, No. 3,
293-300, May 2001.
ASTM C 1130; heat flux; calibration; guarded hot plate;
heat flow meter; heat flux sensor; repeatability;
thermal conductance; thermal insulation; test methods
Calibration measurements of thin heat flux sensors for
building applications are presented. The findings
support the continued develonment of precision and bias
statements for ASTM Practice C 1130. Measurements have
been conducted using a 1016 mm diameter guarded hot
plate apparatus (Test Method C 177) from 10 deg C to 50
deg C and for a heat flux range of + 13 W/m2. The
option of using a 610 mm heat flow meter apparatus (Test
Method C 518) to calibrate the heat flux sensors is also
explored. Experimental designs are presented to compare
test methods, evaluate which parameters affect the
sensor output, and determine the functional relationship
between the sensor output and applied heat flux. The
study investigates two sizes of sensors fabricated by
one manufacturer. Sensor equivalency, grouped by size,
is evaluated to determine whether a calibration based on
a subset of sensors will suffice or if extensive
individual calibrations are needed.