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PRO-WEA
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Features of the PRO-WEA wind sensors
The PRO-WEA wind sensor pair for determining wind direction and wind speed was specially developed for use on
wind turbines.
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Improved electrostatic discharge protection for use in lightning-prone areas
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Year-round use on wind turbines in most climatic zones due to integrated, controlled heating system
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Particularly robust and durable due to reinforced axle
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The simple cable plug connection is advantageous for quick installation and when service is required
STANDARDS
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EMC acc. to EN 61000-6-2, EN 61000-6-4,
EN 61000-4-2, -3, -4, -5, -6, -11, Namur NE-21
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VDE 0100
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WMO Nr. 8
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VDI 3786 Part 2
Initial operation
The wind can be represented by a vector quantity. For a complete description of the wind it is necessary to specify its
speed and direction. The two components are subject to spatial and temporal variations; thus, strictly speaking, they
are valid only for the site where the measuring instrument is put up. We therefore recommend to select the place of
installation very carefully.
Choose installation site
Generally, wind measuring instruments should not measure the specific wind conditions of a limited area, but
indicate the typical wind conditions of a wider area. The values measured at different places must be comparable.
Thus, when installing the sensor you should make sure the place of installation is not under the lee of great obstacles.
The distance between the obstacles and the sensor should be 10 times the height of the obstacles (this corresponds
to the definition of an undisturbed terrain).
If an undisturbed terrain of this kind does not exist the sensor must be put up at a height of at least 5 m above the
obstacle height. If the sensor must be installed on a roof top the place of installation must be in the middle of the roof
to avoid predominant wind directions.
If you want to measure both wind direction and wind speed, install the sensors at the same measuring point,
if possible, and make sure to avoid any mutual influence of the sensors. A wind sensor pair easily meets this
requirement since the sensors are set up side by side. Their horizontal distance should be approximately 1.5 m. The
two sensors must be staggered vertically so that the lower edge of the upper wind speed sensor is 0.1 to 0.5 m above
the upper edge of the lower wind direction sensor.
