The Gill UVW Anemometer measures the three orthogonal vectors of the wind: along wind component “U”, across wind component “V”, and vertical wind component “W”.
The three Propeller Anemometer sensors are mounted at right angles on a common mast. Each sensor measures the wind component parallel with its axis of rotation. Propeller response as a function of wind angle approximates the cosine law, allowing true wind velocity and direction to be calculated. The UVW Anemometer is designed for maximum sensitivity at lower wind speeds. Optional carbon fiber thermoplastic (CFT) propellers are available for applications requiring greater range and durability. Rain and dust are excluded from the precision bearings by a continuous duty air blower that keeps the instrument under a slight positive pressure. For single axis applications, individual propeller anemometers are available separately (see Model 27106)
Specifications 08274 Expanded Polystyrene Propeller (EPS): Diameter: 22 cm Pitch: 29.4 cm wind passage per revolution Range: 0-25 m/s (55 mph) Threshold:* 0.3 m/s (0.6 mph) Distance constant:* 1.0 m (3.2 ft) 08254 Carbon Fiber Thermoplastic Propeller (CFT): Diameter: 20 cm Pitch: 30.0 cm wind passage per revolution Range: 0-35 m/s (80 mph) Threshold*: 0.4 m/s (0.8 mph) Distance constant*: 2.1 m (6.9 ft) Signal Output: Standard tach-generator transducer - analog DC voltage proportional to wind component. Polarity indicates rotation direction. 1800 RPM (500 mV) + 8.8 m/s (19.7 mph). Power Requirement: 24 VAC/12 W for blower motor in UVW Anemometer (separate 115/230V transformer supplied). Propeller Anemometers are self-powered. Dimensions: Height - 107 cm (42 in), each sensor projects 41 cm (16 in), base dia. 16 cm (6.2 in), mounting 34 mm (1.34 in) dia. (standard 1 in pipe). Weight: 3.6 kg (7.9 lbs), shipping weight 8.2 kg (18 lbs)
*Nominal values determined in accordance with ASTM standard procedures. Specifications subject to change without notice.
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