EC150 Open-Path CO2/H2O Gas Analyzer and Sonic Anemometer


                                                         EC150 Open-Path CO2/H2O Gas Analyzer and Sonic Anemometer

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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