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Geotechnical Instruments GEM2000 |
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GEM2000-Gas
Extraction Monitor |
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Monitor CH4,
O2 , CO2 , Gas flow rate and Calorific content of the gas !
The GEM2000 landfill gas
monitor has been specifically designed for use on gas extraction systems,
flares and migration control systems.In
addition to monitoring landfill gas, the GEM2000 monitors gas flow, static
and impact pressure, peak gas readings and then internally calculates the
BTU content of the landfill gas. The unit allows the landfill engineer to
accurately balance the gas extraction system.
Features:
- Multi-function landfill gas management
instrument
- Certified intrinsically safe
- Rugged, field-proven design
- Records peak Carbon Dioxide (CO2),
Methane (CH4) and minimum
Oxygen (O2)
readings
- Displays BTU and gas flow content
- Gas analyzer. Options for further gases
Other Features
- Datalogging allows user to program logging
intervals
- Extra large backlit LCD shows all gases,
peak readings, Barometric pressure and relative pressure of source
- Powerful internal pump for fast accurate
response
Benefits
- Dual mode operation (can be switched
between GA and GEM modes)
- Ensures accurate and reliable data
collection
- Easy balancing/monitoring of gas
extraction systems
- Automatically calculates BTU content
- Flexibility for adding gases
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Operating Principles
Gas Analysis
- Attach sample tube to bore hole and use internal pump to draw sample
through analyser as per a GA2000.
Volume Analysis - Attach
2 tubes to pitot tube and analyser and place pitot in gas extraction
pipework for pressure reading and flow and BTU calculation.
Cross Gas Effects - If calibrated to Methane
and there are other hydrocarbon gases in the mixture, the methane reading
will be higher (never lower) than the actual reading.
The GEM2000 is ATEX classified for use in potentially
explosive atmospheres, to EEx ibd II A T1.
Optional Gas Pods
Gas
Range
Resolution
H2S
0-50ppm 0.1ppm
0-200
1.0
CO
0-1000 1.0
SO2 0-20
0.1
0-100
1.0
NO2 0.2
0.1
CL2 0-20
0.1
H2
0-1000 1.0
HCN 0-100
1.0
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Other Parameters
Unit Accuracy
Comment |
Flow Rate
m3/h 1 m3/h
Calculated from specific
parameters and using a pre-
selected flow device (orifice or
pilot tube). Energy
KW/h 0.1 KW/h
Calculated from specific
parameters. Static
Pressure
mbar ±4.0 mbar
Direct measurement.
Differential Pressure
mbar ±0.3 mbar
Direct measurement (less
barometric) |
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Specifications |
Gases - Typ Accuracy
CH4 CO2
O2
Gases Range
0-100% 0-100%
0-25%
Differential pressure
±50 mbar Static pressure ±50mbar
0-5%
±0.5% ±0.5%
±1.0%
5-15%
±1.0% ±1.0%
±1.0%
15%-Full scale
±3.0% ±3.0%
±1.0% |
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