CO2 sensors for building air-conditioning control and indoor environment measurement | CO2 sensor

Customers can expect highly accurate measurements, long-term stability, and maintenance-free operation.
The sensors have a design life of 10 years and feature a high-performance air filter and a built-in surge protector circuit.
Also available are special cases designed for easy installation on ducts.

Compliant with “Guidelines for Selecting CO2 Measuring Instruments”^*

*Published on November 1, 2021, by the Ministry of Economy, Trade and Industry and the Industrial Gas Detectors and Monitors Manufacturers Association

Specifications

Configuration	CO2 measurement range	Part number
Module unit 679220mm	0-3000ppm	IMG-CA0012-00

*If you wish to customize the measurement range, output voltage or other aspects, please contact our company sales office or distributor with your customization requests.
*Available from 1 pcs

Item	Specifications
Operating temperature	0 to 50°C
Storage temperature	−20 to 50°C
Measured concentration range	0 to 3,000ppm
Measurement accuracy	± (50ppm + 5% of reading)
Measurement accuracy	Typ. ± (30ppm + 2.5% of reading)
Long-term stability (drift)	±50ppm/Year@1000ppm
Input voltage	DC 24V, DC12V
Power consumption	Avg. 0.5W / Max. 2.0W
Output interface	Analog 0 to 5V (conversion formula: 600ppm/V)
Measurement interval	5s

Challenges in building air-conditioning control and indoor environment measurement, and Murata’s strengths

Challenges in building air-conditioning control and indoor environment measurement

Accurate measurements are necessary because age-related deterioration of buildings and environmental conditions such as humidity and temperature can cause measured values to fluctuate.
The Building Maintenance Act (officially the Act on Maintenance of Sanitation in Buildings)^* sets out “Sanitation Maintenance Standards for Building Environments,” which define the requirements for maintaining buildings in terms of environmental sanitation. The standard for carbon dioxide content under the “Air Environment Regulation” section of the standards is 1,000 ppm or less.
Energy loss in air-conditioning due to settings predicated on drift (a property resulting in consistent error)
Calibrating CO2 sensors is difficult because they are installed in high places and other locations that are difficult to access, and calibration requires a reference gas.

*The Building Maintenance Act is a law concerning the maintenance of “specified buildings” used by many and unspecified people, and sets out environmental sanitation requirements for maintaining buildings.

Strengths of Murata CO2 sensors

Murata’s CO2 sensors use the dual-beam NDIR method for accurate measurements even at CO2 concentrations below 400 ppm, well within the Building Maintenance Act standard (1,000 ppm). Also, the model designed for installation in building air-conditioning ducts makes replacement easy.
In addition, with our unique mechanism and algorithms, our sensors are self-calibrating when measured values start to stray, making them maintenance-free and stable over the long term, and thus saving energy.

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CO2 sensorCO2 sensors for building air-conditioning control and indoor environment measurement

Specifications

Challenges in building air-conditioning control and indoor environment measurement, and Murata’s strengths

Challenges in building air-conditioning control and indoor environment measurement

Strengths of Murata CO2 sensors

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