Eddy Covarianza

3-Axis Ultrasonic Anemometer

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The Gill WindMaster™ is a precision anemometer offering three-axis wind measurement data. This instrument will monitor winds speeds of 0-45 m/s and provides sonic temperature, speed of sound and U, V & W vector outputs at 20Hz (32Hz optional). This 3D anemometer is of aluminium/carbon fibre construction and is ideal for the understanding of turbulent flows, surface energy balance and scalar fluxes. Each WindMaster™ is calibrated with a Gill wind tunnel test to provide optimum performance.

This 3D sonic anemometer is ideally suited to the measurement of air turbulence around bridges, buildings, wind turbine sites, building ventilation control systems, meteorological and flux measurement sites.

Wind Speed
Range: 0 – 45 m/s
Resolution: 0.01 m/s
Accuracy <1.5% RMS @12 m/s
Accuracy* <1% RMS @12 m/s (Custom)

Range: 0 – 359°
Resolution: 0.1°
Accuracy: 2° @12 m/s
Accuracy: 0.5° @12 m/s (Custom)

Sonic Temperature
Range: -40°C to +70°C
Resolution: 0.01°C

Speed of Sound
Range: 300-370 m/s
Resolution: 0.01 m/s
Accuracy: < ±0.5% @ 20°C

Internal sample rate: 20 Hz or 32 Hz
Output Parameters: 1, 2, 4, 8, 10, 16, 20 & 32 (Option) Hz
Units of Measure: m/s, mph, kph, knots, ft/min
Formats: UVW, Polar or NMEA
Averaging Flexible: 0-3600 s

Digital Output
Communication: RS232, 422, 485
Baud Rates: 2400 – 115200
Format: ASCII

Analogue Outputs – Optional
Resolution: 12 bits or 14 bits 4 channels available
Selectable Range User: selectable full scale wind speed
Output type: 0-20mA, 4-20mA, 0-5 V, ±2.5 V, ±5 V

Analogue Inputs – Optional
Resolution: 12 bits or 14 bits Up to 4 single ended or 2 differential
Input Type: ±5 V

Power Requirement
Anemometer: 9-30 VDC (25mA @ 12 VDC)

Weight: 1.0 kg
Size: 750mm x 240mm

Protection Class:IP65
Operating Temp: -40°C to +70°C
Humidity: < 5% to 100% RH
Precipitation: 300mm/hr
EMC:  BS EN 61000 – 6 – 3 (Emissions) | BS EN 61000 – 6 – 2 (Immunity)


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