WEATHER STATION The RM Young 05103-45 Alpine Wind Monitor offers the added benefit of an ice-resistant coating on external surfaces, promising improved survivability for the most severe wind measuring applications. The wind direction sensor is a rugged molded vane. The wind speed sensor is a four blade helicoid propeller. Propeller diameter is slightly reduced from the standard model to minimize vibration at high speeds. External housing surfaces are coated with a specially formulated, ice-resistant coating to improve performance in harsh alpine conditions. The all-black color scheme further enhances ice-shedding performance of the sensor.  The instrument is made of UV stabilized plastic with stainless steel and anodized aluminum fittings. Precision grade, stainless steel ball bearings are used. Transient protection and cable terminations are in a convenient junction box. The instrument mounts on standard 1 inch pipe. A mounting orientation ring assures correct realignment of the wind direction reference when the instrument is removed for maintenance. The Alpine Wind Monitor is available with two additional output signal options. Model 05103V-45 offers calibrated 0-5 VDC outputs, convenient for use with many data loggers. Model 05103L-45 provides a calibrated 4-20mA current signal for each channel, useful in high noise areas or for long cables (up to several kilometers). Signal conditioning electronics are integrated into the sensor junction box. Features : Wind speed sensor is a four blade helicoid propeller Wind direction sensor is a durable molded vane Ice-resistant coating with all-black color scheme for harsh alpine conditions. Specifications : Range: Wind speed: 0-100 m/s (224 mph); Azimuth: 360° mechanical, 355° electrical, (5° open) Accuracy: Wind speed: ±0.3 m/s or 1% of reading (greater of); Wind direction: ±3° Threshold Sensitivity:  Propeller: 1.0 m/s (2.2 mph);  Vane: 1.1 m/s (2.5 mph) @ 10° displacement Dynamic Response:  Propeller distance constant: 2.7 m (8.9 ft);  Vane delay distance: 1.3 m (4.3 ft); Damping ratio: 0.3 Signal Output:  Wind speed: magnetically induced;  AC sine wave voltage: 3 pulses per revolution.;  1800 rpm (90Hz) = 8.8 m/s; Azimuth: analog DC voltage from conductive plastic  potentiometer, 10 K , resistance, .25% linearity, life expectancy 50 million revolutions. Power Requirement:  Potentiometer excitation 15 VDC maximum. Dimensions:  Overall height: 37 cm; Overall length: 55 cm;  Propeller: 14 cm diameter; Mounting: 34 mm (1.34 in) diameter (standard 1 inch pipe) Weight: Sensor weight: 1.0 kg (2.2 lb); Shipping weight: 2.3 kg (5.0 lb) MODEL 05103V-45, 0-5 VDC outputs: Power Requirement: 8-24 VDC (5 mA @ 12 VDC); Operating Temperature: -50 to 50° C; Output Signals: 0-5.00 VDC MODEL 05103L-45, 4-20 mA outputs: Power Requirement: 8-30 VDC (40 mA max.); Operating Temperature: -50 to 50° C; Output Signals: 4-20 mA full scale.