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The NBS scale of radiance temperatureThe measurement methods and instrumentation used in the realization and transfer of the International Practical Temperature Scale (IPTS-68) above the temperature of freezing gold are described. The determination of the ratios of spectral radiance of tungsten-strip lamps to a gold-point blackbody at a wavelength of 654.6 nm is detailed. The response linearity, spectral responsivity, scattering error, and polarization properties of the instrumentation are described. The analysis of the sources of error and estimates of uncertainty are presented. The assigned uncertainties (three standard deviations) in radiance temperature range from + or - 2 K at 2573 K to + or - 0.5 K at 1073 K.
Document ID
19880014513
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Waters, William R.
(National Bureau of Standards, Washington, DC, United States)
Walker, James H.
(National Bureau of Standards, Washington, DC, United States)
Hattenburg, Albert T.
(National Bureau of Standards, Washington, DC, United States)
Date Acquired
September 5, 2013
Publication Date
March 1, 1988
Publication Information
Publication: NASA, Washington, D.C. Noncontact Temperature Measurement
Subject Category
Instrumentation And Photography
Accession Number
88N23897
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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