iSense 100% CO2 + 25% O2 Monitor Logger - NEMA4

iSense 100% CO2 + 25% O2 Monitor Logger - NEMA4
Regular price $2,999.00

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co2 and oxygen level controller

The iSense CO2 and Oxygen Combination Monitor and Data Logger is designed measure, log and control both carbon dioxide and oxygen levels drawn from a gas source. This makes it useful for controlled atmosphere (CA) storage applications, incubation, fermentation or for bench-top gas analysis. It features a built-in sampling pump, real-time LCD readout, and built-in data logging. The iSense can be easily calibrated using fresh air.

  • Controlled atmosphere monitoring and gas supply control
  • Incubation and fermentation monitoring and control
  • Environmental safety monitoring

Building on our knowledge of gas sensing technology this unit combines a high-accuracy NDIR CO2 sensor with an ultra-stable Zirconia O2 sensor to provide accurate measurements of both of the detectable major atmospheric compositions gases.

Built-in data logging memory can store up to 60,000 time-stamped CO2 and oxygen levels at a user-configured time interval. In addition, the iSense is designed to be calibrated using ambient (normal outdoor) air.

The iSense includes an open pig-tail connector designed for permanent installation and process monitoring control. The M12 barrel connector has co2 and oxygen level outputs over RS485, relay, and power. The USB port allows data collection via the GasLab software.


This device will NOT meet requirements for CO2 safety monitoring which requires a Fixed/Wall mounted, hard-wired alarm per the NBIC, NFPA, or IFC regulations. Refer to our CO2 Safety Products page for devices that meet your needs.

Call us at (877) 678-4259 toll-free or email us to speak with our technical sales team about purchasing the correct device.


CM-0061 iSense 10% CO2 & 25% O2 Data Logger

CM-0053 - iSense 30% CO2 & 25% O2 Data Logger

CM-0054 - iSense 100% CO2 & 25% O2 Data Logger


Universal Power Supply and Communication Kit (CM-0182) - To power your device from a wall socket and/or to use RS485 as your desired communication output please also select CM-0182.  This additional kit includes a universal power supply (18/24 VDC) as well as an RS485 cable for communication.

Free GasLab® Software 

This device uses GasLab® software for setup, calibration, data logging, and real-time data analysis. 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 GasLab Software


  • Outputs: 4-20mA or RS-485 MODBUS (M12 Connector only)
  • Relay: 1A dry contact controls CO2 or as alarm signal (M12 Connector only)
  • Power Requirements: 24VDC 
  • Weather Proof Connectors
  • Built-in 10,000 hour gas micro-sampling pump
  • 1/8"ID x 1/4" OD x 1/16" Wall Clear PVC Tubing

Oxygen Sensor

  • Measurement Range: 0 – 25% 
  • Sensing Method: Zirconium dioxide (ZrO2)
  • Sampling Method: sample draw 300 ml/ min
  • Response Time: 4 seconds
  • Sensitivity: ± 20 ppm ± 1 % of the measured value
  • Accuracy: 2% full scale
  • Resolution: 100ppm
  • Pressure Range: 500 mbar to 3,000 mbar

CO2 Sensor

  • Measurement Range: CM-0054:100%   CM-0053:30%
  • Sensor Type: Non-dispersive infrared (NDIR)
  • Sampling Method: Sample draw 300 ml/min
  • Accuracy: ± 0.2% vol. CO2 ± 3% of the measured value 
  • Sensor Life Expectancy: > 15 years
  • Self-Diagnostics: complete function check of the sensor module
  • Data Sheets

  • Manuals

  • Technical Documents

  • Videos

  • Additional Resources

Customer Reviews

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

- Phillip Farrar
Water Plant Superintendent

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