“RM YOUNG” Anemometer
Range:
Wind speed: 0-100 m/s (224 mph)
Azimuth: 360° mechanical, 355° electrical (5° open)
Accuracy:
Wind speed: ±0.3 m/s (0.6 mph) or 1% of reading
Wind direction: ±3 degrees
Threshold:
Propeller: 1.0 m/s (2.2 mph) 1.1 m/s (2.4 mph) 05106
Vane: 1.1 m/s (2.4 mph) 05103
Dynamic Response:
Propeller distance constant (63% recovery) 2.7 m (8.9 ft)
Vane delay distance (50% recovery) 1.3 m (4.3 ft)
Damping ratio: 0.3
Damped natural wavelength: 7.4 m (24.3 ft)
Undamped natural wavelength: 7.2 m (23.6 ft)
Signal Output:
Wind speed: magnetically induced AC voltage, 3 pulses per revolution.
1800 rpm (90 Hz) = 8.8 m/s (19.7 mph)
Azimuth: analog DC voltage from conductive plastic potentiometer
– resistance 10K Ω , linearity 0.25%,
life expectancy – 50 million revolutions
Power Requirement:
Potentiometer excitation: 15 VDC maximum