The GA-90 is a lightweight, notebook-sized analyzer for use by landfill field technicians
in monitoring migration probes, active and passive gas extraction systems and measuring
landfill gas at flares or other control systems. The GA-90 integrates the functions
of five landfill gas field instruments -- a methane sample extraction pump, carbon
dioxide and oxygen analyzers, barometer/static pressure meter and a gas datalogger.
LCD screen menus prompt the user through sampling and analysis.