R. M. Young 05305 Air Quality Wind Monitor
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The Wind Monitor-AQ is a high resolution wind sensor for air quality applications. It combines low threshold, fast response and excellent fidelity to meet important regulatory standards.
U.S. Environmental Protection Agency Ambient Monitoring Guidelines for Prevention of Significant Deterioration (PSD).
U.S. Nuclear Regulatory Agency NRC Regulatory Guide 1.23 Meteorological Programs in Support of Nuclear Power Plants.
American Nuclear Society Standard for Determining Meteorological Information at Power Plants.
The YOUNG Model 05305 Wind Monitor-AQ measures horizontal wind speed and direction. Adapted from our Model 05103, this sensor is designed to meet many air quality specifications. A lightweight, carbon fiber thermoplastic (CFT) helicoid propeller, used to measure wind speed, generates an AC sine wave signal upon rotation. Wind direction is determined by a lightweight, balanced, 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. 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 (no special connectors are required).
Specifications
Range:
Wind speed: 0-50 m/s (112 mph)
Azimuth: 360° mechanical, 355° electrical (5° open)
Accuracy:
Wind speed: ±0.2 m/s (0.4 mph) or 1% of reading
Wind direction: ± 3°
Threshold: *
Propeller: 0.4 m/s (0.9 mph)
Vane: 0.5 m/s (1.0 mph) at 10 degrees
Dynamic Response: *
Propeller distance constant (63% recovery) 2.1 m (6.9 ft)
Vane delay distance (50% recovery) 1.2 m (3.9 ft)
Damping ratio: 0.45
Damped natural wavelength: 4.9 m (16.1 ft)
Undamped natural wavelength: 4.4 m (14.4 ft)
Signal Output:
Wind speed: magnetically induced AC voltage, 3 pulses per revolution. 1800 rpm (90 Hz) = 8.8 m/s (19.7 mph)
Wind direction: DC voltage from conductive plastic potentiometer − resistance 10K Ω, linearity 0.25%, life expectancy − 50 million revolutions
Power Requirement:
Potentiometer excitation: 15 VDC maximum
Operating Temperature:
-50 to 50°C
Dimensions:
Overall height: 38 cm (15.0 in)
Overall length: 65 cm (25.6 in)
Propeller: 20 cm (7.9 in) diameter
Mounting: 34 mm (1.34 in) diameter (standard 1 inch pipe)
Weight:
0.7 kg (1.5 lbs)
Shipping Weight:
2.3 kg (5 lbs)
* Nominal values, determined in accordance with ASTM standard procedures. Shielded bearings lubricated with Type LO-1 light General Purpose Instrument Oil.
