CO2 sensor by means of convection via the measuring head and a 12 mm pipe operates according to the infrared principle (NDIR) ensure high reliability and excellent measurement accuracy there is no soiling of the optical measurement path in the CO2 sensor The CO2 sensor is carried out by diffusion via a diaphragm mounting concept stands for easy installation and replacement within seconds The measuring ranges 0...2000 5000 10000ppm are mapped to the 0...5 V 10 V or 4...20 mA analog output Operating Temperature -20 â€Â¦60 º C , ACDC operated