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Title: Radiation thermometry standards at NMIJ from −30 °C to 2800 °C

NMIJ has established a national standard scale in radiation thermometry from −30 °C to 2800 °C. At low temperatures from 160 °C down to −30 °C large aperture fluid-bath blackbodies have been constructed for the calibration of thermal infrared thermometers. In the range from 160 °C to 420 °C, the standard scale has been realized on 1.6 μm thermometers calibrated against In, Sn, and Zn blackbodies. A variable temperature blackbody using an air-bath furnace has recently been developed for direct comparison measurements of a 10 μm thermometer with a 1.6 μm thermometers up to 500 °C. In the higher range of the temperature scale, dissemination consists of three schemes: the range from 400 °C to 1100 °C by Zn, Al, Ag and Cu fixed-point blackbodies: above the Ag point by 0.9 μm and 0.65 μm thermometers: and above the Cu point by metal-carbon high-temperature fixed points.
Authors:
; ; ;  [1]
  1. National Metrology Institute of Japan, AIST, Tsukuba, Ibaraki, 305-8563 (Japan)
Publication Date:
OSTI Identifier:
22218037
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1552; Journal Issue: 1; Conference: 9. international temperature symposium, Los Angeles, CA (United States), 19-23 Mar 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; AIR; ALUMINIUM; APERTURES; CALIBRATION; CARBON; COMPARATIVE EVALUATIONS; COPPER; FURNACES; INDIUM; SILVER; STANDARDS; TEMPERATURE DEPENDENCE; TEMPERATURE MEASUREMENT; THERMOMETERS; TIN; ZINC