The A4 Polycarbonate (Lexan) Three Cup Anemometer - Applications

- Research wind measurements in environmental studies
- Engineering studies on wind effects on bridges, skyscrapers

- Control anemometer for new or existing wind turbines
- Wind resource assessment projects
- Weather Stations
- Storm Monitoring

Features

- Completely self-powered with self-contained alternator.
- Very simple, light weight construction.
- Made from dirt and water resistant materials.
- All three cups molded in one piece for repeatable performance.
- Frequency output for ease of filtering and long cable runs.

Specifications

- Accuracy: 2 < 10 MPH (+/- 1MPH) 10 - 200 MPH - (+/- 5% of reading)
- Temperature Range (-55 to 60 Degrees C)
- Humidity Range (0 to 100% RH)
- Starting Threshold is 0.75 m/s (1.75 mph)
- Distance Constant (63% recovery) is 3.0 Meters or 10 feet
- One piece injection molded black polycarbonate (Lexan) cups and rotor
- Housing body is black ABS plastic
- Shaft is hardened beryllium copper
- Modified Teflon, self-lubricating bearings
- 4 Pole magnet
- Weight - 0.1kg (0.2 lb.)
- Swept cup rotor diameter is 190mm or 7.5 inches
- Cup Cross-section is 51mm or 2 inches
- Overall height is 81.28mm or 3.2 inches
- Moment of Inertia of rotor assembly = 68 x 10-6 s - ft2
- Voltage is 2.0 VAC @ 60 cycles
- Mounting - .5 inch diameter mast, secured with a cotter pin
- Output signal is a sine wave with frequency changing linearly with wind speed with 60 Hz=102 MPH