| Measuring wind
The main principles
The wind is the air movement produced by differences in pressure in the atmosphere (moving from high pressure zones to low pressure zones).
The wind varies according to the height and is modified by the outlay of the land. Defined by international conventions, surface wind is measured at a height of 10 meters (a height which has been decided upon in order to avoid fluctuations due to the natural irregularities of the land, vegetation ...)
Our advantages
The sensors of the DEOLIA scale have been chosen by METEO FRANCE since 1992 for wind force and wind direction measurement.
The DEOLIA anemometers and wind vanes are equipped with rollings which guarantee that the sensors are operational, without requiring extra heating, for with temperatures going as far as minus 40°C.
The DEOLIA 300 sensor uses “optical fibre” links between the transmitter and the measuring point. We can thus avoid any problem related to the transfer of electric signals along the mast, which is naturally extremely sensitive to lightning. (the length of the fibre is 50 m maximum).
Some advice
The setting up of the wind sensors is very important because they are sensitive to the different obstacles surrounding them (vegetation, buildings, ground topography, etc.)
They should be, whenever possible, set up on flat and clear ground, situated at 10 m above the ground. The distance between the sensors and any obstacle (or group of obstacles) should at least be equal to 10 times the average height of this obstacle.
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