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