“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