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IR-based CO2 sensors boast long-term stability

IR-based CO2 sensors boast long-term stability

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By eeNews Europe



The CO2 sensors are based on non-dispersive infrared sensor (NDIR) technology, which is now the most popular type of sensor technology used in CO2 measurement. Murata’s proprietary implementation of NDIR enables accurate calibration regardless of any degradation that may occur over time in the IR light source, optical path or IR sensor, thus ensuring long term stability and enabling many years of maintenance-free operation in critical applications. Eliminating yearly, manual calibration costs means these sensors can actually reduce the total cost overall.  The CO2 sensor is available in three forms, as a module measuring 67x92x20mm (IMG-CA0011-01<0-2,000ppm>, IMG-CA0012-01<0-3,000ppm>), as a 80x125x32mm packaged sensor for agricultural applications (IMG-CA), and in a cased package for BEMS applications (IMG-CB), with a sampling probe already attached. In all cases the output is a 0 to 5 V analogue signal.

The sensors are able to perform over a wide operating temperature range from 0 to 50ºC and offer a measurement range of 0 to 3,000 ppm with an accuracy of +/- 50 ppm + 5 % of reading, typically +/- 30 ppm + 2.5 % of reading. Power requirement is AC/DC 24 V, or DC 12 V, and power consumption is an average of 0.5 W, 2.0 W maximum. The sensor’s measurement interval is 5 seconds. 
Murata Electronics – www.murata.com

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