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.