carbon dioxide & methane logger

ESCM-191 CH4 Data LoggerPART NUMBER: ESCM-191

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 DAS 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.


GasLab® software

CO2Meter GasLab_grandeThis 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.


  • 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: 146×91×33mm
  • Tubing sizes: 3/32″ or 1/8″
  • 1,000 hour pump – upgrade available to 10,000 hour pump on request


LED display
  • ESCM-191-kitCO2 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)


included accessories
  • 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
  • Carbon and methane detectorWindows XP SP2 or newer
  • Microsoft .Net 3.5 Runtime Libraries


  • 1 Year



ESCM-191-Manual -CO2-CH4-Logger