📢 Our Gas Detection Monitors are IN-STOCK and Available to SHIP SAME DAY with orders placed by 2PM EST. SHOP NOW >>

TX Carbon Dioxide Industrial Sensors with Transmitter

TX Carbon Dioxide Industrial Sensors with Transmitter - CO2 Meter
Regular price $199.00

POs or wholesale quantity discounts click here

The TX line of Carbon Dioxide (CO2) sensors are designed for industrial applications where RS485 Modbus RTU or 4-20mA outputs and 6-24VDC is required. 

The TX Sensor Smart Boards combine the GSS ExplorIR®-M 5%, 20% or 100% carbon dioxide sensors with a PCB that provides RS485 or 4-20mA output options and 6-24VDC power options on a 30mm PCB for industrial applications.

The TX Sensor Development Kits add a RS485 Modbus RTU USB to PC FTDI cable, 120VAC wall power adapter and our free GasLab® software for rapid application prototyping, real-time data graphing, data logging, and the ability to zero and span calibrate the sensor. 


  • Low Drift & Cross-Sensitivity
  • Communicates directly to a PLC
  • Easy Calibration, Easy Integration, Compact
  • Wide Range of Power Options
  • RS485 Modbus RTU and 4-20mA analog outputs
  • Sensor Life Expectancy: > 15 years


  • TX-24: CO2 5% Sensor with TX Board
  • TX-241: CO2 5% Sensor Development Kit
  • TX-26: CO2 20% Sensor with TX Board
  • TX-261: CO2 20% Sensor Development Kit
  • TX-25: CO2 100% Sensor with TX Board
  • TX-251: CO2 100% Sensor Development Kit


  • Measuring Gas: Carbon Dioxide
  • Measurement Range: 0-5%, 0-20% or 0-100% CO2
  • Sensing Method: NDIR
  • Measurement Interval: 1 Sample/second
  • Response Time: < 60 seconds
  • Warm-Up Time: < 60 Seconds at 72°F (22°C)
  • Temperature Accuracy: +/- 2 degrees C
  • Power requirements: 6-24VDC
  • Outputs: RS485 Modbus RTU, 4-20mA analog
  • Operating Temperature: -30°C to +60°C
  • Barometric Pressure Range: 500 to 1200 mbar
  • Sensor Life Expectancy: > 15 years


    • See CO2Meter 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. Tube cap adapters are not pre-installed. For accurate results you must mount the tube cap permanently.

    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.



    • Data Sheets

    • Manuals

    • Technical Documents

    • Videos

    • Additional Resources

    • Case Studies

    Customer Reviews

    No reviews yet

    "Easy to install, easy to set up, and easy calibration - just what I was looking for."

    - Phillip Farrar
    Water Plant Superintendent

    Read More Reviews...