50% CO2 - 100% CH4 Sampling Logger and Draw Meter

50% CO2 - 100% CH4 Sampling Logger and Draw Meter
50% CO2 - 100% CH4 Sampling Logger and Draw Meter
50% CO2 - 100% CH4 Sampling Logger and Draw Meter
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  • CM-0190

  • CM-0191

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The portable Carbon Dioxide and Methane Sampling Data Logger lets you log these gas levels over time in inaccessible areas and closed samples via the built-in gas sample draw pump. Use it for:

  • Natural Gas Processing
  • Algae-Based BioFuel
  • Fermentation Monitoring & Validation
  • Agricultural CO2 Up-take Analysis

Inside the Sampling Data Logger is a battery-operated micro-pump connected to two tubing ports. The unit can be programmed to automatically turn itself on (once every 10 seconds up to once every 18 hours), draw gas for a programmable period of time from the inlet port, expel it from the discharge port, and log the CO2 and CH4 values with a time stamp. Later, the data can be retrieved via USB connection to a computer running our free software.

By connecting tubing to the inlet, 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 original container. This makes the Sampling Data Logger perfect for controlled or measuring potentially dangerous high concentrations of CO2 and CH4 in biological applications over hours, or even days.

The battery-operated, portable CO2 + CH4 Sampling instrument comes in 2 models: Sample Draw (real-time measurement) and Sampling Data-logger (interval sampling). All models include a data cable for programming and retrieving logged data, filters, fittings, tubing and auxiliary international power supply.

Free Easy-to-use Software

This data logger is compatible with CO2 Meter's fully-featured data acquisition system (DAS) software. This software has been built from the ground up to allow for easy configuration, data collection, and calibration of your data logger. Available completely free of charge on our website, this software allows you to download logs, analyze, and export your data in report form, and as a CSV file for importation into industry-standard data logging packages.

Download Latest Software Here


  • CO2 and CH4 Measurement: non-dispersive infrared (NDIR)
  • 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)
  • 15,000 data point memory
  • Measurement interval: 10 sec to 18 hours
  • Sensor Life Expectancy: > 15 years
  • Maintenance Interval: No maintenance required
  • Size: 5.75×5.6×1.3in (146×91×33mm)
  • Tubing sizes: 3/32" or 1/8"

LED Display

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


  • 4 AA batteries (not included)
  • International wall power supply 6VDC (included)


  • USB A to USB Mini Cable
  • 1/8" tubing 10 feet long
  • International wall mount power supply
  • Moisture trap
  • Particulate and hydrophobic filters
  • Assorted tubing fittings
  • High-Impact Carrying Case

System Requirements for Data Logging or Changing Defaults

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


  • 1 Year

co2 data logger manual Sampling Data Logger Manual

Dimensional Drawings