Design and characterization of Si and InGaAs pyrometers for radiance temperature scale realization between 232 °C and 962 °C

M. Noorma; S. Mekhontsev; V. Khromchenko; A. Gura; M. Litorja; B. Tsai; L. Hanssen

doi:10.1117/12.667253

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18 April 2006 Design and characterization of Si and InGaAs pyrometers for radiance temperature scale realization between 232 °C and 962 °C

M. Noorma, S. Mekhontsev, V. Khromchenko, A. Gura, M. Litorja, B. Tsai, L. Hanssen

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Proceedings Volume 6205, Thermosense XXVIII; 620501 (2006) https://doi.org/10.1117/12.667253
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

New transfer standard pyrometers, named "RT900" and "RT1550," operating at 900 nm and 1550 nm, respectively, have been designed, characterized, and calibrated with defined fixed points of the International Temperature Scale 1990 (ITS-90) at the National Institute of Standards and Technology (NIST). The pyrometers are designed for radiance temperature measurements in the range between the freezing temperatures of Sn (231.928 °C) and Ag (961.78 °C). These instruments also incorporate design elements optimized for compactness and portability that allow them to be used to interpolate, maintain and disseminate radiance temperature scales as well as for inter-laboratory comparisons. The calibration of the RT900 at different fixed points demonstrate agreement to within 25 mK. The size of source effect (SSE) correction for a source with a 40-mm diameter has been measured to be as low as 0.01 %.

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M. Noorma, S. Mekhontsev, V. Khromchenko, A. Gura, M. Litorja, B. Tsai, and L. Hanssen "Design and characterization of Si and InGaAs pyrometers for radiance temperature scale realization between 232 °C and 962 °C", Proc. SPIE 6205, Thermosense XXVIII, 620501 (18 April 2006); https://doi.org/10.1117/12.667253

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