The Picarro G2401-m gas concentration analyzer provides simultaneous, precise measurement of carbon monoxide (CO), carbon dioxide (CO2), methane (CH4) at parts-per-billion (ppb), and water (H2O) vapor at parts-per-million (ppm) sensitivity with negligible drift for atmospheric science, air quality, and emissions quantification. Flight-optimized design elements minimize effects of aircraft vibration, pitch, roll, and rapidly changing ambient conditions. As a result, the analyzer can be operated on aircraft for urban mapping or vertical profiles.

• Simultaneous and continuous measurement of four atmospheric trace gases
• Parts-per-billion sensitivity, precision, and accuracy with exceptionally low drift
• Rugged design for guaranteed performance during flight
• Water correction automatically reports dry gas mole fractions

Precision at 5 minutes with vibration at 20 Hz, 1 g and 60 minutes is ≤30 ppb for CO; ≤200 ppb for CO2; and ≤2 ppb for CH4. Drift at standard temperature and pressure (STP) over 24 hours is ≤15 ppb for CO; ≤200 ppb for CO2; and ≤1.5 ppb for CH4. Drift remains low with changing temperature and pressure (see data sheet for details). Water correction software automatically reports dry gas mole fractions to help reduce research complexity and consumable costs.