muRata CO2 sensors

New CO₂ Sensors from muRata

Murata have launched three new non-dispersive infra-red (NDIR) CO2 sensors for greenhouses and smart agriculture applications and HVAC applications, which far outperform other methods of CO₂ detection, which are typically used in home appliances and IoT air quality applications.

Murata’s new (NDIR) CO2 sensors are designed to retain calibration regardless of any degradation that may occur over time in the IR light source, optical path or IR sensor. The sensor works by passing a focused IR beam through an optical band pass filter. Following the level of IR is measured by an IR sensor, which indicates the CO₂ levels in the optical path.

Due to low drift, they the new sensors only require a minute margin for the CO2 concentration control setting, which helps to enable maximum energy savings.
The sensors have a built-in high-performance air filter with a design life of ten years and is equipped with a built-in surge protection power circuit.
Models with special cases for easy duct installation are also available.

Typical Operation is over 0 to 50°C, over a range of 0 to 3,000ppm with an accuracy of +/- 50ppm +5 % of reading (typically +/-30 ppm +2.5 of reading).

Murata’s CO₂ sensor is available in three forms:

1: module measuring 67 x 92 x 20 mm (IMG-CA0011-01 0-2,000ppm or IMG-CA0012-01 0-3,000ppm)

2: a packaged sensor for agricultural applications measuring 80 x 125 x 32mm (IMG-CA**)

3: a cased package for BEMS (see below) applications (IMG-CB**), with a sampling probe already attached

In all cases the output is a 0 to 5V analogue signal.

Operation is over 0 to 50°C, over a range of 0 to 3,000ppm with an accuracy of +/- 50ppm +5 % of reading (typically +/-30 ppm +2.5 of reading).

Power requirement is 24Vac, 24Vdc or 12Vdc – averaging 500mW (2Wmax). Measurement interval is 5s.

Specific applications for the IMG-CB series, said the firm, include BEMS (building energy management systems), where ventilation control can be implemented to keep the concentration of CO₂ below defined levels, and in agricultural applications such as greenhouses, where promotion of photosynthesis is achieved through CO₂ concentration control.

For further details please contact ACTE or visit: Murata CO2 sensors