Sensors • Gas Sensors • Carbon Dioxide (CO2) Sensors

Used to detect the amount of carbon dioxide present in a system. Types include nondispersive infrared CO2 sensors and chemical C02 sensors.

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  • Vaisala, Inc.

    Vaisala Inc. manufactures carbon dioxide sensor modules for HVAC, light and demanding industrial OEM applications. The company's GMM111 CO2 module is used in light industrial applications, features accuracy of plus or minus 1.5 percent, and measurement ranges of 0 to 5 percent, 0 to 10 percent, or 0 to 20 percent. Used for demand-controlled ventilation and other CO2 measurement applications, the GMM112 sensor features a measurement range of 0 to 2000 ppm.


    CO2METER is a company that designs and produces carbon dioxide sensors for OEM manufacturers, scientists, researchers, engineers, universities and students. CO2 sensors are dual infrared types, feature real time data acquisition, and feature maximum end ranges of 30 percent volume, 1 percent volume, 2,000 ppm, 2 percent volume, or 100, 65, 20, or 5 percent volume.

  • Kele

    Kele produces carbon dioxide and CO2/RH sensors that feature 24VAC/VDC power, 0-10VDC or 4-20mA output, and a 0-2000 ppm CO2 range. Sensors are available as wall mount and duct versions. The company also distributes carbon dioxide sensors manufactured by General Electric, Honeywell, and Vaisala.

  • Cemtrex, Inc.

    Cemtrex manufactures two carbon dioxide sensor models. The CDS300 sensor can be wall mounted or duct mounted, and features measuring ranges of 0-2000 ppm or 0-5000 ppm, accuracy of 25 ppm, and output of 0-5V, 0-10V or 4-20mA. The CDS600 sensor features a measuring range of 0-3000 ppm, accuracy of plus or minus 25 ppm, and incorporates non-dispersive infrared technology.

  • Honeywell

    Honeywell designs and manufactures carbon dioxide sensors with 0/2-10VDC or 4-20mA output, and adjustable or fixed types (0-2000ppm range). The sensors are available as duct mount, wall mount and portable types, and are used in ventilation and air conditioning systems to control the amount of fresh outdoor air supplied.

  • Onset Computer Corporation

    Onset Computer Corp. produces carbon dioxide sensors that feature a measurement range of 0 to 2500 ppm or 0 to 4000 ppm, an operating range of 32F to 122 F, and accuracy of plus or minus 50 ppm or 5 percent of reading.

  • Pem-Tech, Inc.

    Pem-Tech Inc. designs self-contained carbon dioxide sensors that utilize infrared sensor technology. Sensor specifications include a measuring range of 0-5 percent, 0-10 percent, or 0-50 percent; repeatability of plus or minus 2 percent, and input power of 14-28 VDC. All of the sensors' electronics are housed in an explosion proof instrument box.

  • RAE Systems, Inc.

    RAE Systems produces gas sensors that combine a photoionization detector with a carbon dioxide sensor. Used in beverage and brewery, indoor air quality, food industry, hospital, and respirable breathing air testing applications, the sensors have a CO2 measurement range of 0-20,000 ppm and utilize non-dispersive infrared technology.

  • Detcon

    Detcom manufactures several series of industrial gas detection sensors including carbon dioxide-detecting infrared models. The sensors are waterproof, corrosion proof, vibration proof, and feature multi-layer surge protection along with 4-20mA output.

  • Digital Control Systems Inc.

    Digital Control Systems Inc. manufactures AirSense carbon dioxide sensors designed for CO2 incubator, OEM, and HVAC applications. The OEM CO2 sensors are ideal for measuring carbon dioxide in 1-100 percent environments, and are available as hermetically-sealed types for use in high humidity environments. The HVAC sensors feature a measuring range of 2000 ppm or 5000 ppm.


    ENERAC manufactures non-dispersive infrared sensors that measure carbon dioxide. The sensors feature accuracy of plus or minus 3 percent, resolution of 0.1 percent, and a CO2 measuring range of 0 percent to 20 percent.

  • Figaro U.S.A., Inc.

    Figaro USA Inc. manufactures a number of gas sensors including carbon dioxide sensors used in safety, health, control system, and instrumentation applications.

  • Futurlec

    Futurlec distributes carbon dioxide sensors used in air quality monitoring, smoke alarm, mine and tunnel warning system, and greenhouse applications. The sensors feature detection range of 0-10,000 ppm, response time of less than 60 seconds, and heater voltage of 6V.

  • Parallax, Inc.

    Parallax designs carbon dioxide sensors used for air quality control and fermentation process control in residential, automotive and industrial settings. Sensor features include power requirements of 6.5-12 VDC, high impedance EMF generation interface, and operating temperature range of -4F to 122F.

  • Toxalert

    Toxalert International Inc. is a manufacturer of gas detection systems including non-dispersive, infrared carbon dioxide sensors. Used for monitoring indoor air quality, the CO2 sensors feature a range of 0-2000 ppm, accuracy of plus or minus 5 percent, and linear output of 0 to 10 volts or 4-20mA.