Specifications

Specifications

CO2 Measurement

  • Calibration Range: 0 to 1500 µmol mol-1
  • Accuracy: Within 1.5% of reading
  • Zero Drift (per °C): ±0.15 ppm typical, ±0.3 ppm maximum
  • RMS Noise: @10 Hz: 1.0 ppm (typical @ 400 µmol mol-1 CO2)
  • Direct Sensitivity to H2O: ±2.00E-05 typical, ±4.00E-05 maximum

H2O Measurement

  • Calibration Range: 0 to 60 mmol mol-1
  • Accuracy: Within 1.5% of reading
  • Zero Drift (per °C): ±0.03 mmol mol-1 typical, ±0.05 mmol mol-1 maximum
  • RMS Noise: @10 Hz: 0.05 mmol mol-1 (typical @ 10 mmol mol-1 H2O)
  • Direct Sensitivity to CO2: ±0.02 typical, ±0.05 maximum

Wind Measurement

  • Measurement Axes: U, V, W
  • Measurement Range: 0 – 30 m s-1 (Horizontal Wind Conditions)
  • Offset at Zero Wind: ±0.06 m s-1
  • RMS Noise: <0.1 m s-1 @ 5 m s-1, <0.15 m s-1 @ 15 m s-1
  • Sonic Temperature Accuracy: ±0.2°C Maximum offset at 20°C

Biomet Measurements

  • Photosynthetic Photon Flux Density:
    • Range: 0-3000 µmol m-2 s-1
    • Accuracy: ±5% of reading
    • Cosine Correction: Corrected up to 75° angle of incidence
  • Air Temperature:
    • Range: -40 to 60°C
    • Accuracy: ±1.5°C – No load conditions
  • Atmospheric Pressure:
    • Range: 50 – 110 kPa
    • Accuracy: ±0.5 kPa typical
  • RH:
    • Range: 0-100% – non-condensing
    • Accuracy: ±1% typical

Electronics

  • Communication Interfaces: SDI-12, RS-232 (Raw 10Hz data), USB micro
  • Other Devices:
    • Integrated GPS
    • Positional Accuracy: 2.5 m CEP
    • Supports GPS Time Output: GPST
    • Magnetometer (Output instrument orientation relative to magnetic north)
    • Accelerometer (Output instrument tilt)
  • Embedded Software: Capable of software updates via USB

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