iSense CO2 & Methane Sampling Data Logger

iSense CO2 & Methane Sampling Data Logger
iSense CO2 & Methane Sampling Data Logger
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This carbon dioxide and methane sampling data logger lets you log these 2 gas levels over time in closed samples via the built-in gas sample draw pump. Use it for:

  • Natural Gas Processing
  • Algae-based Biogas Production
  • Fermentation Monitoring & Validation
  • Agricultural CO2 Up-take Analysis

algae biogas

Inside the meter is a micro-pump connected to two tubing ports. The unit can be programmed to automatically turn the pump on, draw gas from the inlet port, expel it from the discharge port, and log the CO2 and CH4 values with a date/time stamp. Later, the data can be retrieved via USB connection to a computer running our free software.

In addition, the meter has a LCD display that shows the current gas levels, whether logging is turned on or off, and the percentage of memory free.

By connecting tubing to the inlet port, you can remotely sample gas, or by connecting tubing to both ports, you can create a closed-loop system and return the gas back to the source container. With the ability to store up to 15,000 measurements, the meter can record gas levels for days or weeks.

Free Easy-to-use 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 Latest Software Here


  • CO2 and CH4 Measurement: NDIR non-dispersive infrared
  • Range: CO2 0-50%, CH4 0-100%
  • Accuracy: ±3% > 50% of full range, ±5% < 50% of full range
  • Sampling Method: Tube sampling (0.30 l/min)
  • Tubing sizes: 3/32" or 1/8"
  • 15,000 data point memory
  • Measurement interval: 10 sec to 18 hours
  • Sensor Life Expectancy: > 15 years
  • Relay with 1A @ 30VDC
  • Output: 4 -20mA for CO2
  • Maintenance Interval: No maintenance required
  • Built-in 10,000 hour gas micro-sampling pump


  • USB to RS485
  • 1 Configurable Relay (optional)
  • 4-20mA

LED Display

  • CO2 in % format (nn.nn%)
  • CH4 in % format (nn.nn%)
  • Logging On/Off indicator
  • % of Free Memory Remaining


  • 24VDC ±6VDC (power supply included)


  • USB A to USB Mini Cable
  • 1/8" tubing 10 feet long
  • Moisture trap
  • Particulate and hydrophobic filters
  • Assorted tubing fittings
  • RS-485 to USB Cable M12 12 PIN with Power

System Requirements for Data Logging or Changing Defaults

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


  • 1 Year

methane co2 data logger manual Manual (pdf)

methane co2 data logger drawing Dimensional Drawings (pdf)