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Features and Benefits
• Developed for applications requiring higher accuracy (Enhanced Performance model)
• Gases measured simultaneously
• Absorption spectra always viewable
• CH4 and CO2 reported on dry mole basis directly
• Ideal for eddy covariance flux and chamber flux
• Widest measurement range
• Extended Range option allows methane measurements at levels up to 10%
• Validated at leading labs and monitoring networks, ABB LGR’s GGA delivers unsurpassed performance and exceeds WMO requirements
• ABB LGR analyzers provide higher reliability and can be fully serviced anywhere, anytime by anyone
Performance Specifications
Precision (1s, 0.1 sec / 1 sec / 100 sec):
CH4: 3 ppb / 1 ppb / 0.3 ppb
CO2: 0.5 ppm / 0.3 ppm / 0.05 ppm
H2O: 50 ppm / 15 ppm / 5 ppm
Maximum Drift (Exhanced Performance model)
(1s, 15 min average, at STP, over 24 hrs):
CH4: 5 ppb
CO2: 300 ppb
H2O: 100 ppm or 1% reading, whichever greater
Measurement Rates:
0.01 – 10 Hz (Standard)
0.01 – 1 Hz (Enhanced Performance, slow flow)
0.01 – 10 Hz (Enhanced Performance, fast flow)
(external pump required for < 6-second flow response)
Accuracy (over all rated conditions):
uncertainty < 1% w/o calibration (Standard)
uncertainty < 0.03% (Enhanced Performance model)
Measurement Range (meets all specs):
CH4: 0.01 – 100 ppm
CO2: 200 – 20000 ppm
H2O: 7000 – 70000 ppm
Operational Range (all models)
(external calibration may be required):
CH4: 0 – 1000 ppm
CH4: 0 – 10% (with Extended Range option)
CO2: 0 – 20%
H2O: 0 – 70000 ppm (0 – 98% relative humidity)
Sampling Conditions (all models):
Sample Temperature: -10 – 50 °C
Operating Temperature (standard model): 5 – 45 °C
Operating Temperature (EP model): 0 – 45 °C
Ambient Humidity: 0 - 100% RH non-condensing
Outputs (all models):
Digital (RS232), analog (all 3 gases), Ethernet file transfer, USB
Power Requirements:
115/230 VAC, 50/60 Hz
100 W (Standard models)
150 W (Enhanced Performance model, steady state)
Dimensions:
Standard rackmount model: 8.75”×19”×24”
Enhanced Performance rackmount model: 15.75”×19”×24”
Weight:
29 kg (Standard model)
40 kg (Enhanced Performance model)
Ordering Information
Standard model: F-GGA-907 (Includes fast plumbing sampling option)
Standard model: GGA-927
Enhanced Performance model: GGA-911
Manufacturer: ABB, Canada