Abstract
The blackbodies of high-temperature fixed points (HTFPs), namely, Co-C, Pt-C, and Re-C eutectic points, were gradually established at the National Institute of Metrology (NIM) of China after 2007, and their characteristics were studied. Recently, the primary standard pyrometer was improved with the lower size-of-source effect, distance effect, and partial temperature controls. The pyrometer was characterized at the new facility for the calibration of the spectral responsivity. The measurement of its nonlinearity extended to a primary standard pyrometer (PSP) reading of approximately 2680 °C for the HTFP measurements. The International Temperature Scale of 1990 above the silver point was realized at the NIM by an improved scheme, the fixed-point blackbody pyrometer assembly. Two cells each for Co-C, Pt-C, and Re-C points were assigned associated uncertainties (k = 2) of 0.22 °C, 0.37 °C, and 0.75 °C, respectively, in accordance with the NIM scale. These HTFP blackbodies are being adopted for the study and calibration of radiation thermometers at the NIM.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Y. Yamada, H. Sakate, F. Sakuma, A. Ono, in Proceedings of TEMPMEKO ‘99, 7th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by J.F. Dubbeldam, M.J. de Groot (Edauw Johannissen bv, Delft, 1999), pp. 535–540
M. Sadli, J. Fischer, Y. Yamada, V. I. Sapritsky, D. Lowe, G. Machin, in Proceedings of TEMPMEKO 2004, 9th International Symposium on Temperature and Thermal Measurements in Industry and Science, ed. by D. Zvizdić, L.G. Bermanec, T. Veliki, T. Stašić (FSB/LPM, Zagreb, Croatia, 2004), pp. 341–347
Woolliams E., Machin G., Lowe D., Winkler R.: Metrologia 43, Rll (2006)
Machin G., Bloembergen P., Hartmann J., Sadli M., Yamada Y.: Int. J. Thermophys. 28, 1976 (2007)
Wang T., Bai C., Dong W.: Acta Metrol. Sin. 29, 65 (2008)
Dong W., Wang T., Bai C., Duan Y.: Acta Metrol. Sin. 29, 129 (2008)
Z. Yuan, X. Lu, J. Wang, C. Bai, W. Dong, X. Hao, T. Wang, Int. J. Thermophys. doi:10.1007/s10765-011-0970-6
W. Dong, Z. Yuan, P. Bloembergen, X. Lu, Y. Duan, Spectral Radiation drift of leds under step-mode operation and its effect on the measurement of the nonlinearity of radiation thermometers. Int. J. Thermophys. (submitted)
Y. Yamada, N. Sasajima, H. Gomi, T. Sugai, in Temperature: Its Measurement and Control in Science and Industry, vol. 7, ed. by D.C. Ripple (AIP, Chicago, 2002), pp. 985–996
J. Hartmann, K. Anhalt, J. Hollandt, E. Schreiber, Y. Yamada, Temperatur 2003 (VDI-Bericht 1784, Berlin, 2003), pp. 135–141
W. Dong, T. Wang, P. Bloembergen, C. Bai, Y.Y. Duan, The eutectic Pt-C: deriving the liquidus temperature from freezing experiments by extrapolation to zero freezing rate. Int. J. Thermophys. (submitted)
Machin G., Dong W., Martín M.J., Lowe D., Yuan Z., Wang T., Lu X.: Int. J. Thermophys. 31, 1466 (2010)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yuan, Z., Wang, T., Lu, X. et al. T 90 Measurement of Co-C, Pt-C, and Re-C High-Temperature Fixed Points at the NIM. Int J Thermophys 32, 1744–1752 (2011). https://doi.org/10.1007/s10765-011-0993-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10765-011-0993-z