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Investigation of the Non-Uniqueness of the ITS-90 in the Range 660 C to 962 C

Published

Author(s)

G T. Furukawa, Gregory F. Strouse

Abstract

Preliminary results are reported on the non-uniqueness of the ITS-90 using high temperature SPRTs (HTSPRTs) in the range 660 C to 962 C. To achieve temperature stability and uniformity of the test HTSPRTs, the method employs the thermal isolation of the Inconel metal comparison block inside a sealed potassium heat pipe controlled to 0.01 C. Eleven HTSPRTs of three designs from five manufacturers were tested. In addition to measurements near the calibration temperatures 663.3 C and 966.6 C to test the temperature uniformity of the comparison block, measurements were made at 703.3 C, 724.4 C, 753.2 C, 801.7 C, 847.5 C, and 913.7 C.
Proceedings Title
International Symposium on Temperature and Thermal Measurements in Industry and Science | 8th | | VDE
Volume
1
Conference Dates
June 1, 2001
Conference Location
Berlin, GE
Conference Title
TEMPMEKO

Keywords

HTSPRTs, ITS-90, non-uniqueness, Temperature, thermometry

Citation

Furukawa, G. and Strouse, G. (2001), Investigation of the Non-Uniqueness of the ITS-90 in the Range 660 C to 962 C, International Symposium on Temperature and Thermal Measurements in Industry and Science | 8th | | VDE, Berlin, GE, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=830737 (Accessed May 30, 2024)

Issues

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Created June 1, 2001, Updated February 17, 2017