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A facility for infrared radiation thermometry in the middle temperature range from 100 /spl deg/C to 500 /spl deg/C is being established by the NMIJ. This calibration facility consists of an infrared radiation thermometer and the fixed point blackbodies of In, Sn, and Zn. An InSb infrared radiation thermometer and a zinc-point blackbody with a large opening of 15mm in diameter are constructed and...
NMIJ has established the facilities and calibration techniques for the infrared radiation thermometry in the low temperature range from -30/spl deg/C to 100/spl deg/C. In the actual calibration processes of the industrial standard blackbodies, we use aperture plates in front of the blackbody cavities to reduce the size-of-source effect of the infrared radiation thermometer used as a comparator. However,...
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