Dataloggers

Nexgen can supply a range of dataloggers for wind resource monitoring and can offer advice to customers about which logger will be suitable for their needs.

For most wind installations it's necessary to not only evaluate the windspeed at the time of monitoring but also to evaluate whether the monitoring period was typical, i.e. whether it was a particularly windy year or not. This requires collecting time-series data, usually 10 minute mean windspeeds, which are then stored by the datalogger for later analysis on a personal computer. The data is then "correlated" with a long-term Meteorological site in the region.

The wind speed at any height can be computed, provided that a speed increase curve is known for the location. It is necessary to use a mast fitted with sensors at different levels and simultaneous logging will then enable the derivation of a speed increase curve.

The most sophisticated loggers enable the transmission of this data by GSM cellphone links.

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