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TX 100% CO2 Industrial Sensor RS485 4-20mA 24VDC

100% CO2 Industrial Sensor RS485 4-20mA 24VDC
Regular price $229.00 USD

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The 100% CO2 Industrial Sensor is designed for measuring high carbon dioxide levels in industrial applications. It uses a GSS ExplorIR®-M 100% carbon dioxide sensor mounted on a TX board that adds a robust RS485 Modbus RTU interface, industry-standard 4-20mA analog output, and 6-24VDC power capability.

The TX Board with CO2 Sensor Development Kit adds the ability to quickly communicate with the CO2 sensor using our free GasLab software, 24VDC wall adapter and a custom USB cable. The devkit not only allows you to quickly get up and running with the sensor, but provides graphing, data logging, and the ability to zero and span calibrate the sensor..


  • Long-life, accurate NDIR LED CO2 sensor
  • Serial UART, RS485, Modbus and analog outputs
  • Built to reliably measure gas levels in harsh environments
  • Easy integration into PLC and industrial applications


  • TX-25 - 100% CO2 Sensor on TX Board
  • TX-251 - Adds a USB interface and free GasLab® Windows software for rapid development, prototyping, sensor testing or scientific projects. Includes 6VDC power supply


  • Measuring Gas: Carbon Dioxide
  • Measurement Range: 0.1-100% CO2
  • Sensing Method: LED NDIR
  • Measurement Interval: 1 Sample/second
  • Response Time: < 60 seconds
  • Power: 6-24VDC
  • Warm-Up Time: < 60 Seconds at 72°F (22°C)
  • Temperature Accuracy: +/- 2 degrees C
  • Operating Temperature: -30°C to +60°C
  • Barometric Pressure Range: 500 to 1200 mbar
  • Lifetime: > 5 years


    • See GasLab, Inc. - Terms and Conditions. 

    Free Easy-to-use GasLab® Software

    The Devkit uses GasLab® software for setup, calibration, data logging, and real-time data analysis via USB. GasLab® makes it easy to export data into a .CSV file that can be imported into any industry-standard software or spreadsheet. GasLab® runs on Windows XP or higher, and free to use with our products.

    Download Software

    System Requirements

    • Windows XP SP2 or newer
    • Microsoft .Net 3.5 Runtime Libraries

    Tube cap adapters easily convert 20mm standard gas sensors from diffusion to sampling sensors. Molded polymer grips sensor for easy fit and removal while maintaining a good seal.

    Micro-Pump Kit includes all the tools you need to utilize the tube-cap adapters as part of a sampling sensor system.

    Nafion tubing is a highly selective, semi-permeable membrane to water vapor. If gases inside Nafion tubing are wetter than gases surrounding the tubing, drying will occur. If the surrounding gases are wetter, humidification will occur.

    Micro gas sampling pumps provide a constant flow of air across the sensor with a tube cap - perfect for bench-top testing of sensors for closed-loop sampling applications.

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    "Swift response and shipment. The product is easy to setup and use. It is just what I was looking for."

    - Shima Tomohiro

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