Compact stationary pyrometer with enhanced temperature resolution

Abstract

A design option for a compact stationary pyrometer with enhanced temperature resolution is proposed. As a modulator, a moving pyroelectric sensor is suggested, which reduces infrared radiation absorption due to the absence of a light guide. To decrease thermal noise and the noise of the input amplifier stage, thermal stabilization of the optical part of the pyrometer at a reduced temperature is applied. To improve stability and measurement accuracy, calibration is performed using two reference levels of infrared radiation.