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

iSense 100% CO2 + 25% O2 Monitor Logger - NEMA4
iSense 100% CO2 + 25% O2 Monitor Logger - NEMA4
iSense 100% CO2 + 25% O2 Monitor Logger - NEMA4
iSense 100% CO2 + 25% O2 Monitor Logger - NEMA4
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  • CM-0054

  • CM-0182

  • CM-0053

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CM-0054 100% CO2 + 25% O2
CM-0053 30% CO2 + 25% O2

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 modified atmosphere packaging (MAP), controlled atmosphere storage (CAS) 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.

  • MAP or CAS Monitoring and gas supply control
  • Incubation and fermentation monitoring and control
  • Science Research Projects
  • 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 composition 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 addtion, the iSense is designed to be calibrated using ambient (normal outdoor) air.


  • 1- Open Pig-Tail Connector - Designed for permanent installation, process monitoring and control, the 12-pin (M12) barrel connector has a 4-20mA CO2 level output, a 4-20mA oxygen level output, MODBUS over RS-485 output, relay output and 24V power input. Also included is a USB port for data collection and calibration via our free GasLab® software.
  • 1- 6’ USB Cable
  • 1- M12, 12 position 5M Cable
  • 1- Fitting, Tubing & Filter Kit


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

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 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 measured value 
  • Sensor Life Expectancy: > 15 years
  • Self-Diagnostics: complete function check of the sensor module

Manual (pdf)

Dimensional Drawings (pdf)