Leading CO2 Sensor Manufacturers for Air Quality Monitoring

CO2 sensors play a critical role in air quality monitoring by measuring the concentration of carbon dioxide (CO2) in various environments, such as indoor spaces, industrial facilities, and outdoor settings. These sensors are essential for maintaining optimal air quality and ensuring health and safety, particularly in applications like HVAC systems, building automation, and environmental monitoring. Leading manufacturers of CO2 sensors offer cutting-edge technologies such as Non-Dispersive Infrared (NDIR) sensors, which provide high accuracy and reliability in detecting CO2 levels.

What is a CO2 sensor and how does it work?

The CO2 sensor has been developed to address the measurement requirement of concentration of CO2 in the air. It is mainly used to monitor air quality indoors and is used for various applications such as air conditioners, air purifiers, ventilators, smart speakers, thermostats, baby monitors, indoor air quality monitors, smart lighting, outdoor lighting, in-cabin air quality monitoring units, etc.

Example #1: Infineon Technologies AC has launched a CO2 sensor with part number XENSIV PAS CO2. This sensor has a built-in microcontroller that converts the CO2 value to ppm. It supports various interfaces viz. I2C, UART, and PWM and works based on the PAS (photoacoustic spectroscopy) principle. This sensor uses a MEMS microphone that detects changes in pressure generated by CO2 molecules within the cavity of the sensor.

Example #2: Process Sensing Technologies offers NDIR (Non-dispersive Infrared) sensors. This sensor contains an infrared source, light tube, BPF (Band Pass Filter), and piezoelectric detector. The infrared source and detector are placed opposite each other. When CO2 gas is absent in between them, the detector produces more output. When CO2 gas is present in between them, the detector produces less output. For CO2 gas, the sensor uses a common wavelength of about $4.26 \ \mu m$ which is absorbed by CO2 and not by other gases.

Benefits or advantages of CO2 sensor

Following are the benefits or advantages of CO2 sensors:

• It reduces energy costs.
• It is available in a small size which saves space on end products.
• It is available in various configurations which provides flexibility to customers.
• It is easy to integrate into the system.
• It offers high-quality data.
• It complies with smart building standards.

CO2 sensor Manufacturers

The following table mentions popular manufacturers of CO2 sensors.

Conclusion

CO2 sensor manufacturers are at the forefront of improving air quality monitoring systems with advanced, precise, and durable sensors. These sensors are indispensable in various industries, helping to maintain healthy indoor environments, reduce energy consumption, and comply with environmental regulations. As air quality concerns grow globally, the demand for high-performance CO2 sensors will continue to increase, driving innovation and technological advancements in the field.