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El mejor instrumento para proyectos investigación de flujos y turbulencias
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Resumen

El anemómetro sónico CSAT3A equivale al cabezal del anemómetro sónico CSAT3, con el cable modificado para conectar al módulo electrónico EC100. El CSAT3A se utiliza en nuestros sistemas "eddy-covariance" junto al analizador "open-path" EC150 y el analizador "closed-path" CPEC200.

Ventajas y características

  • Puede combinarse con los analizadores de gases EC150 o EC155 en aplicaciones eddy-covariance open-path o closed-path (OPEC or CPEC)


Ofrecemos diversos sistemas en este área. Seleccione:


Descripción técnica

The CSAT3A is an optional component of an EC150 open-path or EC155 closed-path CO2/H2O gas analyzer. It attaches to a common mounting bracket and connects to the gas analyzer's EC100 electronics module.

Especificaciones

  • CE compliant
  • Measurement Path Length:
    10.0 cm vertical; 5.8 cm horizontal
  • Path Angle from Horizontal: 60°
  • Transducer Diameter: 0.64 cm
  • Transducer Mounting Arms Diameter:
    0.84 cm
  • Support Arms Diameter: 1.59 cm 
  • Anemometer Head Dimensions:
    47.3 cm (l) x 42.4 cm (h)
  • Anemometer Head Weight:
    1.7 kg (3.7 lb)
  • Construction: Sealed sonic transducers and electronics
  • Anemometer Head Materials: stainless steel tubing
  • Electronics Box Materials: cast aluminum
  • Operating Temperature:
    -30° to +50°C
  • Voltage Supply: 10 to 16 Vdc

Current

  • 60 Hz Measurement Rate: 200 mA
  • 20 Hz Measurement Rate: 100 mA

Measurements

  • Outputsa: ux, uy, uz, c
  • Speed of Sound: Determined from three acoustic paths; corrected for crosswind effects
  • Measurement Rate: programmable from 1 to 60 Hz, instantaneous measurements; two over-sampled modes are block averaged to either 20 Hz or 10 Hz
  • Measurement Resolutionb: ux, uy: 1 mm/s rms
    uz: 0.5 mm/s rms
    c: 15 mm/s (0.025°C) rms
  • Offset Errorc:
    < ±8.0 cm/s (ux, uy);
    < ±4.0 cm/s (uz)
  • Gain Errorc:
    < ±2% of reading (wind vector within ±5° of horizontal);
    < ±3% of reading (wind vector within ±10° of horizontal);
    < ±6% of reading (wind vector within ±20° of horizontal)
  • Rain: Innovative ultrasonic signal processing and user-installable wicks considerably improve the performance of the anemometer under all rain events

Output Signals

  • Digital SDM: CSI 33.3 k baud serial interface for datalogger/
    sensor communication. Data type is 2-byte integer per output plus 2-byte diagnostic
  • Digital RS-232
    Baud Rate: 9600, 19200 bps
    Data Type: 2-byte integer per output plus 2-byte diagnostic

Analog

  • Number of Outputs: 4
  • Voltage Range: ±5 V
  • Number of Bits: 12

SDM and RS-232 Digital Outputs Reporting Range

  • Full Scale Wind: ±65.535 m/s autoranging between four ranges; least significant bit is 0.25 to 2 mm/s
  • Speed of Sound: 300 to 366 m/s (-50° to +60°C); least significant bit is 1 mm/s (0.002°C)

Analog Outputs Reporting Range

  • ux: ±30 m s-1, ±60 m s-1
  • uy: ±30 m s-1, ±60 m s-1
  • uz: ±8 m s-1
  • c: 300 to 366 m s-1 (-50° to +60°C)

Analog Outputs LSB

  • ux: 15 mm s-1, 30 mm s-1
  • uy: 15 mm s-1, 30 mm s-1
  • uz: ±8 m s-1
  • c: 16 mm s-1 (0.026°C)

a - ux, uy, uz are wind components referenced to the anemometer axes; c is speed of sound.

b - Resolution values are for instantaneous measurements made on a constant signal; noise is not affected by sample rate.

c - Offset error and gain error values assume the -30° to +50°C range, wind speeds of < 30 m/s, and wind angles between ±170°.

Compatibilidad

Datalogger Considerations

Compatible Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR5000 CR7X CR9000X

Casos de aplicación

Alaska: Measuring Fluxes in Forests
Scientists and land-use managers have long recognized the importance of forest lands for their role in carbon uptake. Predominantly, research......leer más
Korea: Flux Monitoring Over a Rice Paddy
With instrumentation and help from Campbell Scientific, personnel from the Department of Atmospheric Sciences at Yonsei University, Seoul, Korea, measured......leer más
Canada: Forest Carbon Sequestration
Forest habitats contribute more than any other terrestrial biome to carbon cycles and processes. It is believed that more than......leer más