In the abscense of sunlight, the Geovane will keep the latest valid data obtained since it was powered on. As soon as it receives sufficient radiation from the Sun, Geovane will update its orientation output. This temporary “pause” does not imply any inconvenience due to the nature of the data.
Assuming that the Geovane has been properly aligned with the wind vane by means of its built-in laser, the Geovane will then continuously provide the angular wind vane offset with respect to Geographic North. The user should then apply this offset in the post processing of the dataset.
At the moment, the wind vanes compatible with Geovane are: Thies First Class, Thies Compact, Young Wind Monitor, Young Wind Monitor Alpine, Vector W200P, NRG 200P and Ornytion 207P. In the future, it will be possible to extend compatibilty even further.
The Geovane_turbine application offers the exact orientation of the turbine’s nacelle with respect to True North. 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.
The Geovane_turbine application is specifically developed for turbine alignment and includes ad hoc hardware and software. It is used as a portable instrument, carried by the O&M team from one wind turbine to another offering once-in-lifetime corrections per turbine.
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 whitout altering the consistency of previous wind vane measurements.
If the Geovane is installed from the beginning, it is possible to have wind direction datasets inmune 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.
No. Any orientation can be used, since the azimuthal Field of View (FOV) of the Geovane is 360°. The Geovane should obviously be perfectly aligned with the e.g. wind vane (see the user manual how to do this).
It is recommended that the wind vane’s cable is positioned in such a way, that it runs down the side of the Geovane facing the nearest Earth’s pole or the met mast itself. This is to reduce the shadow projection caused by the cable, but this is not critical.
In addition to the advantages associated with digital communication and EMI immunity, RS-485 digital output allows the Geovane to provide other useful data apart from the orientation offset: tilt of the sensor, boom vibration, GPS coordinates, UTC time...
A Geovane connected via RS-485 can be used as the GPS module for data loggers and RSD without GPS by default.