CPEC200 Closed Path Analysis System

The CPEC200 monitors atmosphere-biosphere exchanges of carbon dioxide, momentum, water vapor, and heat.

The system includes Campbell Scientific's EC155 closed-path gas analyzer, CSAT3A sonic anemometer, CR3000 datalogger, pump module, valves, tubing and other hardware and software needed for a turn-key eddy-covariance setup.


Key Features

  • Serial output: SDM, RS-485, USB. Includes CO2 mixing ratio, H2O mixing ratio, fast response cell temperature, cell pressure, differential pressure. When used with the CSAT3A head, also outputs Ux, Uy, Uz, sonic temperature. A range of sensor diagnostics are also output
  • Analogue output: 2 16-bit DACs for CO2 and H2O (0 to 5 Vdc)
  • CO2: Range - 0 to 1000 ppm; Noise - maximum 0.15 µmol/mol
  • H2O: Range - 0 to 42 ppt; Noise - 0.006 mmol/mol
  • Analyser Power: 4.8W (steady state and power up) at 10 to 16 Vdc
  • Sample Cell Volume: 5.9 cm3
  • Output Rate: 5 to 50 Hz; user programmable
  • Output Bandwidth: 5, 10, 12.5, 20, or 25 Hz; user programmable
  • Analyser dimensions: 3.9kg; 42.7 cm x 7.4 cm x 10.1 cm
  • Pump Module Flow Rate: 7 Lpm (3 to 9 Lpm under datalogger control)
  • Pump Module Power: 4W @ 7 Lpm; Heater - 7.2 W; Fan - 0.7 W


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EC155 Brochure

File Size 237KB   Filename b_ec155_2_.pdf   Download