AWS High Resolution Wind Monitor

The precision of the AWS High Resolution Wind Monitor is unbeaten in the industry. 360 degree resolution on the wind vane and an anemometer capable of sustaining gusts of up to 220 mph make it an excellent choice for serious weather enthusiasts. AWS offers the High Resolution Wind Monitor as an upgrade to the standard AWS PC-MET package. It can be requested at the time of purchase, or, retrofitted to an existing installation.  
Wind Speed Specifications

Range: 0 to 130 m.p.h., gust survival to 220 m.p.h.

Sensor: 18 cm diameter 4-blade helicoid propeller molded of polypropylene

Pitch: 29.4 cm air passage per revolution

Distance Constant: 2.7 m (8.9 ft.) for 63% recovery

Threshold Sensitivity: 2.2 m.p.h.

Transducer: Centrally mounted stationary coil, 2K Ohm nominal DC resistance

Transducer Output: AC sine wave signal induced by rotating magnet on propeller shaft. 125 mV p-p at 100 rpm. & 12.5 V p-p at 10,000 rpm.

Output Frequency: 3 cycles per propeller revolution (0.098 m/s per Hz)
Wind Direction Specifications

Range: 360 degrees mechanical, 355 degrees electrical (5 degrees open)

Sensor: Balanced vane 38 cm (15 in) turning radius

Damping Ratio: 0.25

Delay Distance: 1.3 m (4.3 ft.) for 50% recovery

Threshold Sensitivity: 1.0 m/s (2.2 m.p.h.) at 10 degree displacement

Damped Natural Wavelength: 7.4 m (24.3 ft.)

Undamped Natural Wavelength: 7.2 m (23.6 ft.)

Transducer: Precision conductive plastic potentiometer, 10 K ohm resistance (+/-20%), 0.25% linearity, life expectancy 50 million revolutions, rated 1 watt at 40 degrees C, 0 watts at 125 degrees C

Transducer Excitation Requirement: Regulated DC voltage, 15 VDC maximum

Transducer Output: Analog DC voltage proportional to azimuth angle with regulated excitation voltage applied across potentiometer