Campbell Scientific’s EC150 is an open-path analyzer specifically designed for eddy covariance flux measurements. Combined with the CSAT3A sonic anemometer as shown above, these two components of an open-path eddy-covariance system simultaneously measure carbon dioxide, water vapor, air temperature, barometric pressure, and three-dimensional wind speed and sonic air temperature.
Benefits and Features
l Unique optical configuration gives a slim aerodynamic shape with minimal wind distortion
l Analyzer and sonic anemometer measurements are synchronized by a common set of electronics
l Maximum output rate of 60 Hz with 20 Hz bandwidth
l Low power consumption; suitable for solar power applications
l Low noise
l Measurements are temperature compensated without active heat control
l Angled windows to shed water and are tolerant to window contamination
l Field rugged
l Field serviceable
l Factory calibrated over wide range of CO2, H2O, pressure, and temperature in all combinations encountered in practice
l Extensive set of diagnostic parameters
l Fully compatible with Campbell Scientific dataloggers; field setup, configuration, and field zero and span can be accomplished directly from the datalogger
l Speed of Sound: Determined from three acoustic paths; corrected for crosswind effects
l Rain: Innovative signal processing and transducer wicks considerably improve performance of the anemometer during precipitation events
General Specificationsa
l Operating Temperature Range: -30° to +50°C
l Calibrated Pressure Range: 70 to 106 kPa
l Input Voltage: 10 to 16 Vdc
l Power @ 25°C: 5 W (steady state and power up)
l Measurement Rate: 60 Hz
l Output Bandwidth: 5, 10, 12.5, or 20 Hz; user programmable
l Output Options: SDM, RS-485, USB, analog (CO2 and H2O only)
l Auxiliary Inputs: air temperature and pressure
l EC150 Head and Cables Weight: 2.0 kg (4.4 lb)
l CSAT3A Head and Cables Weight: 1.7 kg (3.7 lb)
l EC100 Electronics Weight: 3.2 kg (7.1 lb)
l Cable Length: 3 m (10 ft) from EC150 and CSAT3A to EC100
l Gas Analyzer/Sonic Volume Separation: 5.0 cm (2.0 in)
l Warranty: 3 years or 17,500 hours of operation, whichever comes first
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