g2508 gas concentration ANALYZER

G2508 Gas Concentration Analyzer

The Picarro G2508 gas concentration analyzer provides simultaneous, precise measurement of nitrous oxide (N2O), methane (CH4), carbon dioxide (CO2), ammonia (NH3) at parts-per-billion (ppb), and water (H2O) vapor at parts-per-million (ppm) sensitivity with negligible drift for agriculture soil science, ecology, and emissions quantification.

  • Simultaneous and continuous measurement of N2O, CH4, CO2, NH3 and H2O
  • Parts-per-billion sensitivity for excellent rate-of-rise quantification
  • Rapid response time and continuous measurements provide data at high temporal resolution
  • Operates in open or closed systems and integrates easily with chamber systems
  • Water correction automatically reports dry gas mole fractions

Precision at 1 minute and 5 minutes is <10 and <5 ppb for N2O, <7 and <5 ppb for CH4, <300 and <200 ppb for CO2, and <3 and <1 ppb for NH3. Water correction software automatically reports dry gas mole fractions to help reduce research complexity and consumable costs


Carbon Dioxide None – Automated correction good to 20,000 ppm CO2
Methane None – Automated correction good to 200 ppm CH4
Ammonia None – Automated correction good to 2 ppm NH3
Ethane 0.2 ppb N2O/ppm C2H6 tested up to 120 ppm
Ethylene 0.5 ppb N2O/ppm C2H4 tested up to 16 ppm
Acetylene Not for use with acetylene experiments
Background Gas Designed for use in ambient air, not for use with highly varying or enriched N2, O2, H2, or He
ChemDetect™ Software Unique Picarro algorithms detect and flag data which may be inaccurate due to spectroscopic interference
Ambient Temperature 10 to 35°C
Ambient Humidity <85% RH, non-condensing
Sample Pressure 300 to 1,000 Torr (40 to 133 kPa)
Sample Flow Rate ~230 sccm
Sample Humidity <99% RH, non-condensing, Water correction tested to 25°C dew point
Sample Temperature -10 to 45°C
Cavity Temperature Control +/-0.005°C
Cavity Pressure Control +/-0.0002 atm
Closed-loop/Recirculation Capability Compatible with Picarro Closed System Pump A0702
Inlet Fittings ¼” Swagelok®
Dimensions 17” w x 7” h x 17.5” d (43.2 x 17.8 x 44.6 cm) not including 0.5” feet
Weight 50 lbs (22.6 kg)
  100 –240 VAC; 47– 63 Hz (auto-sensing); < 375 W at start-up (total). Steady-state operation: 120 W (analyzer), 150 W (pump).
Power Requirements
Installation Benchtop (standard) or 19” rack mount chassis (optional)
Accessories Included: Keyboard, mouse. Optional: LCD monitor. Excluded: Vacuum pump
  A0702, Picarro Closed System Pump
Options S0528, O2 sensor for O2 measurements and correction in varying O2 environments S0517, Extended CH4 operating range up to 800 ppm


·         Carbon Dioxide (CO2)

·         Methane (CH4)

·         Water H2O

·         Nitrous oxide (N2O),


·         Emission Quantification

·         Agriculture & Soil Science

·         Ecology