Metrological Problems of Modern Energy-Controlled Pyrometry

Abstract

Metrological problems that arise in measurements of the temperature of physical objects by means of pyrometers, where the emissivity of the objects is different from 1 and may vary with a variation in the wavelength, are considered. Factors are established and methods of eliminating inaccuracies in the radiation coefficient of energy-controlled pyrometers are presented. Violations in the traceability of pyrometers with built-in correction units relative to the state primary standard of the unit of temperature are discussed and recommendations for recovering traceability are presented.