Infrared Gas Analyzers

Campbell Scientific offers both open-path and closed-path infrared gas analyzers that measure carbon dioxide, water vapor, temperature, and pressure. These analyzers feature aerodynamic designs to minimize wind distortion and low power dissipation to minimize error caused by analyzer body heating.

The EC150 (open-path) and EC155 (closed-path) gas analyzers can be configured with CSAT3A sonic anemometer sensor heads to create eddy-covariance flux systems. The sonic anemometer mounts closely beside the gas analyzer to minimize error caused by spatial separation of the gas and wind measurements. The gas analyzer and sonic anemometer also share common electronics—reducing cost, simplifying installation, and providing time synchronization between the sonic and gas measurements.

The IRGASON provides the ultimate integration of gas and wind measurements - one sensor that measures CO₂, H₂O, three-dimensional wind velocity, and sonic temperature in the same place at the same time. This level of integration has been unavailable in previous eddy-covariance systems.