ZEPHIR300

Wind Lidar

The ZephIR 300 is a continuous-wave (CW) LiDAR system that provides remote wind measurements across ten user-defined heights from 10 m to 200 m. It is ideal for applications that require wind measurements at multiple heights, and for locations where the installation of a tall tower is difficult.

The ZephIR 300 has been used worldwide for site assessment, prospecting, and turbine micrositing; extreme flow conditions; power-curve assessment; permanent wind-farm anemometry; and complex site analysis.

Benefits and Features

  • Remote wind profiling across 10 user-defined heights from 10 m (33 ft) to 200 m (656 ft)
  • Accurate measurements at the heights that count
  • Proven extreme operation from -40° to +50°C across 450 lidar deployments globally
  • IP67-rated enclosure sealed against moisture and ingress
  • Measures 50 data points every second across a full 360-degree scan providing the high sample rate advantageous in complex and fast changing air flows

Specifications

Performance
  • Measurement Height Range:
    10 m to 200 m (33 ft to 656 ft);
    300 m (984 ft) optional extended height also available
  • Probe Length: 
    0.07 m (0.23 ft) @ 10 m (33 ft)
    measurement height;
    7.70 m (25.26 ft) @ 100 m (328 ft)
    measurement height
  • Number of Measurement Heights:
    10, user configurable
  • Sampling Rate: 50 Hz
  • Averaging Period: 1 second upwards (user configurable)
  • Scanning Cone Angle: 30°
  • Wind Speed Accuracy: < 0.5% (as measured against a calibrated moving target)
  • Wind Speed Range:
    < 1 m/s to 70 m/s
  • Wind Direction Accuracy: < 0.5°
Operations
  • Temperature Range:
    -40° to +50°C
  • Power Consumption: 69 Watts
  • Input Power: 12 Vdc
  • Weight: 55 kg (121.3 lb)
Data
  • 10-minute Averaged Data:
    80 KB/day
  • 3-second Data: 3 MB/day
Safety
  • Laser Classification: Class 1
  • Eye Safety Standard: IEC 60825-1
  • IP Rating: IP67 (excludes external fans)
  • EMC Compliance:
    EN55022  Class A, EN61326
    Industrial,
    FCC Radiated and Conducted Emissions

Technical Description

ZephIR300 is calibrated to an industry-approved standard. Its proven technology has been rigorously tested via IEC equivalent power performance measurements, extensive onshore/offshore sites, and tall mast (193 m) verifications.

Measurement Technique

The ZephIR300's infrared beam illuminates natural-atmospheric aerosols such as dust, pollen, or rain droplets. When the infrared beam hits these aerosols, some light is backscattered into a receiver. Wind affects the motion of these aerosols, and changes the back-scattered light’s frequency. This frequency shift is measured by a photo-detector, and from these measurements, wind speed and direction are calculated.

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