Title :
Size-of-source-effect correction for radiation thermometers calibrated by fixed-point blackbodies
Author :
Yamada, Yoshiro ; Wang, Yunfen ; Shimizu, Yukiko ; Minahiro, Kiyomi
Author_Institution :
National Metrology Institute of Japan, AIST, Tsukuba, Japan
Abstract :
Size-of-source effect (SSE) correction is required when a radiation thermometer measures a radiating source which has a different size from the reference blackbody source that the thermometer has been calibrated with. A simple method for this SSE correction is through the effective source diameter of the fixed-point source. In this paper, the method is demonstrated for a new compact fixed-point blackbody furnace which can be operated for a wide variety of fixed-point types ranging from In to Cu points. A value for the effective source diameter and its uncertainty is derived, which can be applied globally to all fixed-point types and to a wide range of radiation thermometers.
Keywords :
Apertures; Furnaces; Heating; Standards; Temperature measurement; Uncertainty; Wavelength measurement; Radiation thermometry; fixed-point blackbody furnace; size-of-source effect; temperature scale comparison;
Conference_Titel :
SICE Annual Conference (SICE), 2013 Proceedings of
Conference_Location :
Nagoya, Japan