Інфрачервоний вимірювач концентрації газу з частотним виходом

Abstract

Infrared gas concentration measuring device with frequency output relates to control-measuring engineering. In infrared measuring device transformation of gas concentration to frequency takes place. For such transformation infrared measuring device has three sources of direct voltage that perform power supply for source of infrared radiation, piroelectric infrared photo-receiver and field and two bipolar transistors. At gas with given concentration coming power of infrared radiation is changes, this leads to change of frequency of generated vibrations. Possibility of transformation of gas concentration to frequency simplifies design of emitter, increases its sensitivity and accuracy, this enlarges range of measurements.