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Calculations based on the dimensions of each Rohn lattice tower and the length of the Second Wind boom indicate that the boom will help reduce measurement error to less than 0.5% for winds from directly upwind of the tower. The optimal placement of the boom is at 90 degrees to the prevailing winds. Recommendations are taken from IEA Recommended Practice for Wind Turbine Testing #11, "Wind Speed Measurement and Use of Cup Anemometry," 1999 Edition.
More accurate wind measurements are a must in today's competitive environment. Shorter booms subject the anemometer to significant tower effects, sometimes reducing measured wind speed. Engineered by Second Wind Inc. specifically for the Rohn 25G & 45G lattice towers, this sensor boom reduces measurement error by allowing the anemometers to more precisely measure free stream wind speed. The placement of the mast inserts is also designed for minimum interference between the boom and the sensors, and between the sensors themselves. The vertical sensor mounting masts can be custom-designed to meet your exact specifications and needs.
Features
- Galvanized steel and aluminum
- 170 cm (67 inches) offset distance from edge of tower
- Accommodates 0.5 inch OD sensor masts
- Includes boom, mounting plate, mounting U-bolts
Ordering Information and Specifications
To learn more about how Second Wind's wind sensors can add value
to your wind resource assessment program, contact
Second Wind today. |
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