Thies wind vane manual

Scalar wind velocity Wind velocity amount without indication of direction. It allows the connection between Thies wind sensors with serial-synchronous output and respective periphery for ex.

Starting value The wind speed at which a cup anemometer respectively the wind vane starts to move. Vectorial mean value Method of calculation: The individual vectors, measured as wind speed and direction, are decomposed into rectangular components.

The components are averaged arithmetically, these mean values are then composed into a vectorial mean value. Vectorial mean value with standard vectors Only used for wind direction. A constant wind speed is assumed for the individual vectors. Wind direction Information on the direction from which the wind is coming. Wind run The path covered by the wind for a certain period of time.

The user should then apply this offset in the post processing of the dataset. Yes, the Geovane is fully compatible with any industry standard data logger through the following output options:.

In the future, it will be possible to extend compatibilty even further. Aligning all your wind turbines to the same angular reference point enables the wind farm operator to compare yaw turbine alignments.

This means that all the turbine yaw encoders in any given windfarm now have the same reference point. By adding a new wind vane equipped with a Geovane to an already existing met mast, you are able to correct existing wind direction datasets without altering the consistency of previous wind vane measurements. If the Geovane is installed from the beginning, it is possible to have wind direction datasets immune to the torsion of the tower structure or bended sensor booms.

Throughout the measurement campaign, the Geovane will provide the updated offset, achieving absolute accuracy and greater guarantees to external auditors and financial investors. The Geovane should obviously be perfectly aligned with the e. Geovane Metmast. Home Products Geovane Geovane Metmast. Download PDF. Description A patented invention that finally solves the inherent uncertainties in wind direction measurements. Case Study 10 South Korea.

Case Study 7 Egypt. Does the Geovane provide an offset figure or is it mechanically adjusting the unit it is installed on e. This output voltage is in the range from 0V up to the applied supply voltage. Due to the fact that the output voltage can be identical to the supply voltage, this sensor can be used as a replacement for previous sensors with a mechanical potentiometer. When changing from a sensor with a mechanical potentiometer to this device, the parameters supply voltage and supply current must be observed.

They must fulfill both requirements. If the wind vane is supplied over one output of the data logger, its minimum supply voltage will have to be obeyed or a suitable external voltage supply will have to be selected. Potentiometer wind vane uses as sensing element a potentiometer with typically 10 kOhm or 2 kOhm.

A potentiometer is a resistance with a value in a linear relation to the angle of wind vane. This means you have a short circuit.