An error analysis is given for the 1-meter Guarded Hot Plate at the National Bureau of Standards. This apparatus is used to measure the thermal resistance of insulation materials. The individual contributions to uncertainty in thermal resistance are discussed in detail. The total uncertainty is estimated to be less than 0.5 percent at sample thicknesses up to 150 mm (6 inches) and less than 1 percent at a thickness of 300 mm (12 inches).
Woodside, W. and Wilson, A.G., "Unbalance Errors in Guarded Hot Plate Measurements," Symposium on Thermal Conductivity Measurements and Applications of Thermal Insulations, ASTM STP 217, ASTTA, Am. Soc. Testing Mats, pp. 32-48 (1957).
2.
Woodside, W. , "Deviations from One-Dimensional Heat Flow in Guarded Hot Plate Measurements," Review of Scientific Instruments, RSINA, Vol. 28 pp. 1933-1937 (1957).
3.
Hahn, M.H., Robinson, H.E. and Flynn, D.R. "Robinson Line-Heat-Source Guarded Hot Plate Apparatus," Heat Transmission Measurements in Thermal Insulations, ASTM STP 544, American Society Testing and Materials pp. 167-192 (1974).
4.
Rennex, B.G. , "Thermal Parameters as a Function of Thickness in Low-Density Insulation," Journal of Thermal Insulation , Vol. 3, pp. 37-62 (1979).
