CO2 sensor

CO2sensor is a product with long-term stability and high measurement accuracy that promises to improve maintainability through an automatic calibration feature based on a unique calibration curve algorithm and a dual wavelength (for measurement and reference) NDIR*1 system.

For agricultural applications, sensors installed in greenhouses and plant factories accurately measure CO2 concentrations, and the system supplies more CO2 when the plants need it for photosynthesis, helping improve plant quality, increase yields, and save energy.

For air-conditioning control applications, CO2 sensors installed in building air-conditioning ducts monitor CO2 concentrations, and the system provides ventilation when necessary, helping save energy for entire buildings.

Going forward, the output interfaces will be expanded to improve compatibility with various control systems.

  • *1NDIR: Non-Dispersive Infrared

Product Lineup

CO2 sensor application examples

Developed for smart agriculture and building ventilation control applications which require CO2 sensors with superior long-term stability.

CO2 sensors for greenhouses and smart agriculture applications 

Used in greenhouses and plant factories for the purpose of promoting photosynthesis and increasing yields by controlling the CO2 concentration.

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

Used for the purpose of contributing to energy savings through ventilation control corresponding to CO2 concentrations.
(Measurement criteria for air quality: CO2 concentration of 1,000 ppm)

Problems with CO2 concentration control

  • CO2 sensor measurement errors occur due to the temperature/humidity, and failures occur due to deterioration over time
  • There is an impact on crop quality and yields due to measurement errors
  • There is an increase in energy loss due to excessive ventilation
  • In the case of manual calibration, time and effort are required in the removal and atmospheric calibration of sensors

Requirements for CO2 Sensors and Advantages of Murata's CO2 Sensors

Atmospheric CO2 concentration is roughly 400 ppm, but photosynthesis subtracts from that, which is why there is demand for accurate measurements within the range of 0 to 400 ppm.
Recent user needs include long-term stability, durability, and maintenance-free operation in addition to accurate measurements.
Murata’s CO2 sensors use the dual-beam NDIR method for accurate measurements even at atmospheric concentrations below 400 ppm.
With our unique mechanism and algorithms, our CO2 sensors are self-calibrating when measured values start to stray, making them maintenance-free and stable over the long term.