Case is not included!
GA-90 Landfill Gas Analyzer Monitor GA90 NR
We gladly ship
Landtec GA-90 / GA94a
Portable Landfill Gas Analyzer Monitor. Works Great NR
Comes with Pelican Carrying Case!
CES Landtec Landfil Gas Monitor Meter CH4 CO
Portable, Computerized Instrument Simplifies Landfill Gas
Accurate landfill gas (LFG) analysis is essential in meeting
today's strict environmental and safety regulations. The GA 90 is a
compact field instrument which can be configured to analyze the
methane (CH4), carbon dioxide (CO2) and oxygen (O2) levels in LFG.
It is used by landfill field technicians in monitoring migration
probes, active and passive gas extraction systems and measuring LFG
at flares or other control systems.
The GA 90 introduces computer technology that uses on-screen
menus to provide a simplified user interface for accurate data
analysis and recording while eliminating the need to carry as many
as seven separate field instruments depending on the features
selected (CH4 CO2 02 analyzers, barometer, static pressure meter,
data logger, temperature gauge and sample pump). The collected
information is date and time stamped and readings are stored in
memory. Later, the data can be downloaded to a personal computer or
printer to provide error-free data management. These features
result in faster, more reliable monitoring.
LCD screen menus prompt the technician through sampling and
analysis of the methane, carbon dioxide and oxygen content of
landfill gas and recording the static and barometric pressures.
Alarms can be easily set to monitor for high methane and carbon
dioxide or low oxygen levels. The GA 90 also can display the CH4
concentration in % by volume or % LEL (Lower Explosive Limit) of
methane. The automatic data logging function allows unattended
sampling and analysis of gas concentrations and atmospheric
pressure. Results can be displayed in either Imperial (USA) or SI
The GA 90 can store over 1000 sets of measurements (each
measurement stores three gas concentrations, atmospheric pressure
and static well pressure plus temperature) with a date and time
stamp plus sample I.D. code.
The measurements may be viewed on the GA 90screen, printed or
downloaded to a PC computer.
TopRugged, Compact, User--Friendly Design
The GA 90 is an all-weather, notebook-sized instrument that uses
a self-compensating, infrared bench, long-life galvanic cell oxygen
sensor, high vacuum gas sample pump and rechargeable power supply.
An easy to follow, on-screen menu simplifies use, guiding the
operator through the sampling process, that can usually be
completed in minutes. I.D. codes allow the user to store and recall
measurements for each monitoring point. An optional cable and PC
software allow easy downloading of stored data to a personal
computer for further analysis and report generation. The same cable
can be used to print directly to a printer.
GA 90 Features
provides automatic sampling and analysis of gas composition CH4
(0-100% and LEL), CO2, (0-60%) and 02 (0-25%).
Light-Weight Compact Size...
is easy to carry. It is the size of a notebook and weighs less
than five pounds.
samples, analyzes and displays gas composition results in
usually less than one minute.
provides accurate measurements of CH4 and CO2 and is not
poisoned by the presence of other gases.
Durable Oxygen Sensor...
is a galvanic cell unaffected by other gases such as CO2, CO or
allows for improved accuracy. Technicians can field calibrate
the GA 90 using standard calibration gases.
User Friendly On-Screen Menu...
simplifies operation and shortens training by guiding user
step-by-step through all functions and options.
PC/Printer Data Downloading...
provided by optional RS-232 interface and software for use with
PC computers and printers.
stores measured data for each monitoring point, over 1000 sets
recorded for all stored data.
Monitoring Point I.D. Codes...
provide alphanumeric identification of monitoring points for
data storage and recall.
Durable All-Weather Construction...
will includes a membrane keypad that is designed to operate in
wet weather extremes from 32to 104F.
Optional Unattended Auto-Log Feature...
allows measurements to be recorded automatically (unattended) at
user selected intervals.
Built-in Adjustable Alarms...
allows user to set alarm limits for CH4, CO2, and 02.
Rechargeable Batteries & Auto-Off Feature...
provides power for a full day's use.
Flow Fail Alarm...
alerts user of sample line restrictions.
How It Works
A high vacuum sample pump draws a quantity of gas through the
sample hose in-line water trap and a user replaceable particulate
filter, into a sample chamber. An infrared beam is projected, via
sapphire windows, through the gas sample. On the other side of the
chamber the beam is sensed by methane and carbon dioxide detectors.
A microprocessor calculates the amount of infrared light absorbed
at different wavelengths and determines the various gas
The oxygen concentration is measured by the Galvanic Cell
method. The oxygen molecules diffuse through a Teflon membrane into
a cell containing a gold electrode. The molecules are reduced and a
current flows between the gold electrode and a lead electrode. The
resulting cell output is measured as a voltage which is
proportional to the oxygen concentration. The entire system has a
very high resistance to poisoning caused by the presence of other
gases, such as carbon dioxide or hydrogen sulfide.
When a sufficient amount of gas has entered the sample chamber,
gas concentration levels shown on the display will stabilize. A few
keystrokes will store the measured data in the GA 90 memory with
I.D. code, date and time.
GA 90 Sample Resolution
Methane (CH4); Sensor Range : 0-100%, Resolution 0.1%
Carbon dioxide (CO2): Sensor Range: 0-60%, Resolution
Oxygen(O2) Sensor Range: 0-25%, Resolution: 0.1%
Static Pressure: Sensor Range: 0-100" H2O, Resolution
Barometric Pressure Sensor Range: +-0.15" Hg, Resolution:
Item is in good
Item powers up and
displays the info on the screen "unit not covered by lifetime
guarantee, next service due: in 7/1/2005" .
Landtec GA-90, installed battery packs that hold a charge, red
cloth carrying case, 5 ft. External Sampling Hose assembly with
external filter/water trap assembly, and Pelican Case.
I think I also have the
ac adapter. I will let you all know for sure soon.
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service. Jason Rydell in San Diego, CA, USA Phone: 619-519-0869
Online Business name: Betterbizequipment
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