Geotech GA4000

The GA4000 uses tunable Laser Diode technology to enable accurate and reliable measurements with no drift over time or cross gas sensitivity. The GA4000 was designed specifically for use in monitoring landfill gas (LFG) extraction systems, flares, and biodigesters.

Please see the PDF-file(s) above for more detailed information.

The GA4000 eliminates problems with drift, calibration, and cross gas contamination typically
associated with other instruments. Maintenance is virtually eliminated thereby reducing cost of
ownership.

The development of Geotech’s GA4000 Laser Diode is the culmination of research by NASA’s Jet Propulsion Laboratory for use on Mars. The optical system uses a laser to produce a specific wavelength of light tuned to an absorption line, the known light frequency of the target gas. This technique produces an analyser with a fast response speed, where the laser light stimulates vibrations and rotation in the molecule, resulting in energy absorption and enabling the sensing of gas

Features
• Tunable Laser Diode technology
• Measures % CH4, CO2, & O2
• Each laser is tuned to a specifi c absorption wavelength (CH4 & CO2)
• Accuracy of 1.0% full scale (CH4, CO2 & O2)
• 4 - 20 mA outputs
• Operates over a wide range of fl ow & temperature
• Options: Rack mounted or weatherproof enclosure
• Optional: Gas Conditioning unit

Benefits
• Highly accurate
• No cross gas contamination
• No drift on readings (CH4 & CO2)
• Continuous readings with rapid response
• Integrates to AEMS or existing SCADA Systems
• Low cost of ownership
• Low maintenance requirements

Applications
• Green House Gas/ Carbon Credit Projects - CDM
• Gas to energy projects
• Environmental compliance projects
• Anaerobic digesters projects
• Aerobic-Bioreactor projects
• Closed site monitoring
• Coal Mine Methane