Abstract

The design of a compact blackbody furnace that allows temperature fixed points to be realized to a high degree of accuracy is described. Using this apparatus, the standard uncertainty in the calibration of a precision infrared thermometer at the fixed-point temperatures of indium, tin and zinc was estimated to be about C. This furnace can be used as a travelling standard for intercomparisons as well as laboratory apparatus for the calibration of precision infrared thermometers.

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