The 05305 is made out of lightweight, UV-stabilized thermoplastic with stainless steel and anodized aluminum fittings. The thermoplastic material resists corrosion from sea air environments and atmospheric pollutants. It uses stainless-steel precision-grade ball bearings for the propeller shaft and vertical shaft bearings.
The 05305 measures wind speed with a helicoid-shaped, four-blade propeller. Rotation of the propeller produces an ac sine wave that has a frequency directly proportional to wind speed. The ac signal is induced in a transducer coil by a six-pole magnet mounted on the propeller shaft. The coil resides on the non-rotating central portion of the main mounting assembly, eliminating the need for slip rings and brushes.
Wind direction is sensed by the orientation of the fuselage-shaped sensor body, which is connected to an internal potentiometer. The data logger applies a known precision excitation voltage to the potentiometer element. The output is an analog voltage signal directly proportional to the azimuth angle.
Designed specifically for air quality measurements, the 05305 provides a lower starting threshold, faster response, and higher accuracy than the other wind monitors. It meets or exceeds the requirements published by the following regulatory agencies:
- U.S. Environmental Protection Agency—Ambient Monitoring Guidelines for Prevention of Significant Deterioration (PSD) and On-Site Meteorological Instrumentation Requirements to Characterize Diffusion from Point Sources
- 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 Nuclear Power Plants
- Compatible with most Campbell Scientific data loggers
- Constructed with thermoplastic material that resists corrosion from sea-air environments and atmospheric pollutants
- Lower starting threshold, faster response, and higher accuracy than the other wind monitors
- Meets or exceeds requirements of the following regulatory agencies: U.S. Environmental Protection Agency, U.S. Nuclear Regulatory Agency, and American Nuclear Society
- Compatible with the LLAC4 4-channel Low-Level AC-Conversion Module, which increases the number of anemometers one data logger can measure
- Compatible with the CWS900-series interfaces, allowing it to be used in a wireless sensor network
The 05305 is a lightweight, high-performance wind-speed and wind-direction sensor designed specifically for your air-quality measurements. It is more responsive but less rugged than the other wind monitors. Manufactured by R. M. Young, this sensor is cabled for use with Campbell Scientific data loggers.
- CS 05305-L Wind Monitor, Air Quality Version high-performance wind speed and direction sensor designed specifically for air quality measurements
- Propeller-type anemometer with fuselage and tail-wind vane
- Rugged design for use in a variety of climates worldwide
| Applications |
|
| Sensor | Helicoid-shaped, 4-blade propeller and fuselage-shaped sensor body |
| Measurement Description | Wind speed and direction |
| Operating Temperature Range | -50° to +50°C (assuming non-riming conditions) |
| Mounting Pipe Description |
|
| Housing Diameter | 5 cm (2.0 in.) |
| Height | 38 cm (15.0 in.) |
| Length | 65 cm (25.6 in.) |
| Propeller Diameter | 20 cm (7.9 in.) |
| Weight | 1.1 kg (2.5 lb) |
Wind Speed |
|
| Range | 0 to 50 m/s (0 to 112 mph) |
| Accuracy | ±0.2 m/s (±0.4 mph) or 1% of reading |
| Starting Threshold | 0.4 m/s (0.9 mph) |
| Distance Constant | 2.1 m (6.9 ft) 63% recovery |
| Output | ac voltage (three pulses per revolution)
90 Hz (1800 rpm) = 9.2 m/s (20.6 mph) |
| Resolution | (0.1024 m s-1) / (scan rate in seconds) or(0.2290 mph) / (scan rate in seconds) |
Wind Direction |
|
| Mechanical Range | 0 to 360° |
| Electrical Range | 355° (5° open) |
| Accuracy | ±3° |
| Starting Threshold | 0.5 m/s (1.0 mph) at 10° displacement |
| Distance Constant | 1.2 m (3.9 ft) 50% recovery |
| Damping Ratio | 0.45 |
| Damped Natural Wavelength | 4.9 m (16.1 ft) |
| Undamped Natural Wavelength | 4.4 m (14.4 ft) |
| Output |
|
| Voltage | Power switched excitation voltage supplied by data logger |
