GA5000 Portable Landfill and Contaminated Land Gas Analyser

The GA5000 is a landfill and contaminated land portable gas analyser capable of measuring CH4, CO2, O2, H2S and CO.


The GA5000 is a landfill and contaminated land portable gas analyser capable of measuring CH4, CO2, O2, H2S and CO. It is easy to use and calibrate, benefiting from Geotech's market leading reliability and helping you to standardise monitoring routines, whilst supporting environmental legislation compliance. The Geotech GA5000 portable gas analyser is perfect for landfill gas monitoring, waste to energy and site investigation applications. 

Additional purchase options for the GA5000 portable landfill gas analyser include borehole gas flow, flow logging for improved borehole analysis, GPS/field navigator, an ATEX certified anemometer and more. 

The GA5000 is currently available at Air-Met Scientific for both sales and rental.

For more information on the GA5000 Portable Landfill and Contaminated Land Gas Analyser, contact your local Air-Met office. 

  • Measures % CH4, CO2 and O2
  • CH4 and CO2 accuracy +/-0.5% after calibration
  • Measures barometric pressure and relative pressure
  • Memory: 2,000 IDs* and 4,000 readings (* with GAM software)
  • Peak and previous readings shown
  • Modular and upgradeable
  • On board context-sensitive help
  • Choice of user settings
    • ATEX, IECEx, MCERTS, CSA and UKAS calibration (ISO17025) certified
    • Additional Gas Analyser Manager software for data download available
    • Optional accessories including ATEX certified anemometer
    • Choices of borehole gas flow measurement; GPS / field navigator
    • Optional additional gases (H2S up to 10000ppm and H2 compensate)
Technical Specifications
Gases Measured CH4, CO2, O2, H2S and CO (For more details about gases measured, please refer to the specification sheet)
Power Supply
Battery Type Rechargeable nickel metal hydride battery pack (not user replaceable)
Battery Life Typical use 8 hours from fully charged
Battery Charger Seperate intelligent battery charger powered from mains supply (100-240V)
Charge Time Approximately 4 hours from complete discharge
Flow 550 ml / min typically
Flow Fail Point -200 mbar vacuum - user settable
Maximum Vacuum Restart -375 mbar approx with flow rate of approx 80ml/min

Temperature Measurement -10°C to +75°C with optional probe
Temperature Accuracy ±0.5°C with optional probe
Flow From Borehole 0-20 l/hr internal measurement (optional)
Flow From Borehole Accuracy ±0.3 l/hr
Alarm User selectable alarm levels
Communications Via USB lead or wireless Bluetooth**
Relative Pressure Measurement ±500 mbar
Relative Pressure Accuracy ±4 mbar typically (should be zeroed before reading) to ±15 mbar max
Barometric Pressure Measurement 500 to 1500 mbar, ±5 mbar accuracy
GPS Sensor Location and positioning (optional)
Available Memory 2,000 IDs, 4000 readings**
Environmental Conditions
Operating Temperature Range -10°C to +50°C
Atmospheric Pressure Range 700 to 12 mbar
Relative Humidity 0-95% non condensing
Case Seal IP65
Weight 1.6kg
Size L 220mm, W 155mm, D 60mm
Display Ultra-clear high resolution 4.3” full colour TFT
Gas Sample Filters External user changeable 2.0μm ptfe water traps
Certification Rating
ATEX Marking II 2G Ex ib IIA T1 Gb (Ta = -10°C to +50°C)
ISO17025 Calibration to UKAS certificate number 4533
CSA Ex ib IIA T1 (Ta= -10°C to +50°C) (Canada), AEx ib IIA T1 (Ta= -10°C to +50°C) (USA)

** Gas Analyser Manager software required.

  • Landfill gas monitoring
  • Waste to energy
  • Site investigation
  • Landfill perimeter monitoring
  • Landfill gas field management
  • Gas flaring