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The YOUNG Model 05103 Wind Monitor measures horizontal wind speed and direction. Originally developed for ocean data buoy use it is rugged and corrosion resistant, yet accurate and light weight. A four-blade helicoid propeller, used to measure wind speed, generates an AC sine wave signal upon rotation. Wind direction is determined by a vane attached to a precision potentiometer inside an internal housing. UV stabilized plastic with stainless steel and anodized aluminum parts are used in the construction of the sensor. Precision grade stainless steel ball bearings with light contacting Teflon seals and a wide temperature grease are used to help exclude contamination. The sensor mounts on a standard 1-inch IPS pipe. A mounting orientation ring is included that engages with the base of the sensor to retain orientation when the sensor is removed for maintenance. Terminations are made in a junction box at the base of the sensor by small clamp-style connectors
| Parameter | Specification |
|---|---|
| Wind Speed Range | 0–100 m/s (0–224 mph) |
| Azimuth Range | 360° mechanical, 355° electrical (5° open) |
| Wind Speed Accuracy | ±0.3 m/s (±0.6 mph) or 1% of reading |
| Wind Direction Accuracy | ±3° |
| Propeller Threshold | 1.0 m/s (2.2 mph) |
| Vane Threshold | 1.1 m/s (2.4 mph) |
| Propeller Distance Constant | 2.7 m (8.9 ft) – 63% recovery |
| Vane Delay Distance | 1.3 m (4.3 ft) – 50% recovery |
| Damping Ratio | 0.3 |
| Damped Natural Wavelength | 7.4 m (24.3 ft) |
| Undamped Natural Wavelength | 7.2 m (23.6 ft) |
| Wind Speed Signal Output | Magnetically induced AC voltage, 3 pulses per revolution |
| Wind Speed Calibration | 1800 rpm (90 Hz) = 8.8 m/s (19.7 mph) |
| Wind Direction Signal Output | DC voltage from conductive plastic potentiometer |
| Potentiometer Resistance | 10 kΩ |
| Potentiometer Linearity | 0.25% |
| Potentiometer Life Expectancy | 50 million revolutions |
| Potentiometer Excitation | 15 VDC maximum |
| Operating Temperature | -50°C to +50°C |
| Overall Height | 37 cm (14.6 in) |
| Overall Length | 55 cm (21.7 in) |
| Propeller Diameter | 18 cm (7 in) |
| Mounting Diameter | 34 mm (1.34 in), suitable for standard 1-inch pipe |
| Unit Weight | 1.0 kg (2.2 lbs) |
| Shipping Weight | 2.3 kg (5 lbs) |
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