EC155 CO2/H2O Closed-Path Gas Analyzer

EC155 closed-path analyzer incorporates vortex technology for reduced maintenance, an absolute pressure sensor in the sample cell for more accurate measurements, and a sample cell with improved corrosion protection. The EC155 can be combined with the CSAT3A sonic anemometer, as shown in the main image. The revised CSAT3A has a more aerodynamic and rigid design.
  • Vortex Intake (U.S. Pat. No. 9,217,692) greatly reduces maintenance frequency compared to traditional in-line filters
  • Heated inlet increases protection against condensation
  • More accurate pressure measurements with the new sample cell absolute pressure sensor
  • Fully integrated, detachable intake
  • Improved corrosion protection with stainless-steel sample cell
  • Improved sonic temperature from more rigid CSAT3 geometry
  • Stream-lined, aerodynamic CSAT3A mounting
  • Slim aerodynamic shape with minimal wind distortion
  • Analyzer, sample cell, and sonic anemometer measurements have matched bandwidths and are synchronized by a common set of electronics
  • Low power consumption; suitable for solar power applications
  • Low noise
  • Small sample cell for excellent frequency response
  • Integrated zero/span connection for simplified field zero/span
  • Field rugged
  • Field serviceable
  • Factory calibrated over wide range of CO2, H2O, pressure and temperature in all combinations encountered in practice
  • Extensive set of diagnostic parameters
  • Fully compatible with Campbell Scientific data loggers; field setup, configuration, and field zero and span can be accomplished directly from the data logger
  • Rain: innovative signal processing and transducer wicks considerably improve performance of the anemometer during precipitation events
Operating Temperature Range -30° to +50°C
Operating Pressure 70 to 106 kPa
Measurement Rate 60 Hz
Output Bandwidth 5, 10, 12.5, or 20 Hz (user-programmable)
EC100 Barometer Accuracy
  • ±1.5 kPa (> 0°C), increasing linearly to ±.3.7 kPa at -30°C (basic)
  • ±0.15 kPa (-30° to +50°C) (enhanced)
Sample Intake/Sonic Volume Separation 15.6 cm (6.1 in.)