Influence of the choice of the spectral interval on the accuracy of temperature determination by multiwave thermometry methods
S.P. Rusin
Joint Institute for High Temperatures RAS, Moscow, Russia
Keywords: instrumental accuracy, temperature, multiwave thermometry
Abstract
The instrumental accuracy of determining the model temperatures by the data of radiance temperature measurements at two and three experimental points is analyzed using model examples, when neither thermodynamic temperature nor emissivity of the sighting site is known. The instrumental accuracy of determining the desired temperature is estimated depending on the choice of a spectral window in the thermal radiation spectrum. It is shown that moving the spectral window to the long-wavelength region of the radiation spectrum can deteriorate the instrumental accuracy of measuring the desired temperature by several times.
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