Elliptic Anemometer ™ (Wind Speed Gauge)
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Elliptic Anemometer™Features include hybrid lifetime self lubricating bearings, optical speed sensor, robust Carbon Fiber support tube, impact resistant rotor and integrated temperature, humidity (VTH) and barometric pressure (VTHP) sensors. Accurately measure wind from 1mph to well over Class 5 Hurricane speeds and record air temperature, pressure and humidity for accurate weather predictions and wind energy assessments. |
Elliptic Anemometer ™ Advantages
Anemometer Cup Cross-Section Shapes
Anemometer Cup Profile Shapes
Elliptical cups have low drag and clean flow
separation regions resulting in aerodynamically efficient, consistent
and stable anemometer performance.
Spherical cups have unstable boundary layer
separation regions resulting in aerodynamic instabilities affecting
repeatability and consistency of wind speed measurement.
Conical cups have clean flow separation
regions but large aerodynamic drag negatively affecting anemometer
response time.
Elliptical cup provides a consistently
longer moment arm for wind to push against, benefiting anemometer
measurement consistency and response time.*
*For equiv. cup area & rotor diameter
*For equiv. cup area & rotor diameter
Circular cups have their center of pressure
closer to the anemometer rotation axis, thus reducing wind's moment arm
to overcome anemometer inertia and friction effects.
A COMPLETE SOLUTION:
- Wind Energy Site Evaluation
- Environmental studies
- Weather monitoring for outdoor events
- Wind Turbine control and monitoring
- Rooftop wind and weather monitoring for Commercial and Residential sites
Features Summary:
- Robust impact resistant anemometer construction.
- Optical wind speed sensor reliability
- Lifetime maintenance free self cleaning bearings
- Carbon Fiber mounting shaft for strength and stability in high winds & gusts
- Temperature sensor on all products
- Humidity Sensor on VTH & VTHP versions
- Barometric Pressure Sensor on VTHP versions
- Free Wind Vane future upgrade. ($100 value) Coming in 2010/11.
- See Related Data Logger and Software Products
Performance Specifications
| Parameter | Accuracy | Resolution |
| Wind Speed | ±1% from 5 to 25m/s, otherwise ±1.5% | 0.1m/s (0.2mph) |
| Pressure | ±0.3hPa (±0.009inHg) | 0.1hPa (0.01inHg) |
| Temperature | ±0.5°C (±0.9°F) | 0.1°C (0.2°F) |
| Humidity | ±2% RH | 0.1% |
Mechanical Specifications
- Operating Temperature range: -40°C to 80°C (-40°F to 175°F)
- Humidity range: 0 to 100% RH
- Barometric Pressure range: 30kPa-120kPa(9inHg - 35inHg)
- Starting wind speed threshold: 0.5m/s (1mph)
- Distance constant of 5m at 5m/s.
- 180mm (7.3in) rotor diameter.
- 60mm (3.5in) sensor height w/o support shaft.
- 400mm (16in) support shaft (Carbon Fiber)
- Sensor wire length of 14.5m (47.5ft)(up to 30m (100ft) lengths available)
- Anemometer body material is UV, Ozone and impact-resistant
- Low-inertia self-lubricating hybrid ball bearings with self-cleaning properties.
- Sensor Weight: 0.25 kg (0.5 lbs)
Electrical Specifications
- Plug & Play.
- USB 1.0/2.0 compatible.
- Power source: Any mobile phone charger 2010 and newer. (w/ USB-micro connector)
- Average current draw of 13 mA (1 Anemometer & 1 base station with 15m (50ft) sensor spacing)
Requirements
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For initial configuration & setup:
- Computer with Windows installed. (Mac running Windows is OK).
- Available USB 1.0/2.0 port on computer.
- 1GHz single core processor, or 0.5GHz multicore.
- 512Mb of Ram.
- 100Mb of Hard Drive space.
- (Apple, Unix & Linux compatibility coming soon.
