Title :
State of the arts of the infrared radiation thermometry standards in the middle temperature range at NMIJ
Author :
Shimizu, Y. ; Ishii, J. ; Kaneko, Y. ; Sakuma, F. ; Ono, A.
Author_Institution :
Nat. Metrol. Inst. of Japan, AIST, Ibaraki, Japan
Abstract :
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 characterized. The stability of radiation thermometer of 5 mK is achieved after a correction of the output drift due to varying ambient temperature. For the blackbody the stability during the plateau and the repeatability for 8 times plateau measurements over a week are 1 mK and 4.8 mK by a standard deviation, respectively. The size-of-source effect is as good as 0.9960 for 15 mm, 0.9992 for 20 mm, and 1 for above 21 mm in diameter.
Keywords :
III-V semiconductors; blackbody radiation; calibration; indium compounds; infrared detectors; measurement standards; radiometry; temperature measurement; thermometers; 100 to 500 degC; 15 mm; 20 mm; 21 mm; In; InSb; Sn; Zn; calibration facility; fixed point blackbody; infrared radiation thermometer; infrared radiation thermometry standards; large-opening zinc-point blackbody; middle temperature range; middle-temperature standards; output drift correction; plateau measurement; radiation thermometer stability; size-of-source effect; standard deviation; varying ambient temperature;
Conference_Titel :
SICE 2004 Annual Conference
Conference_Location :
Sapporo
Print_ISBN :
4-907764-22-7
