Wind Monitoring

RES offer a full wind monitoring service for customers. We can supply, install and monitor full anemometry kits for rental or purchase. Please contact us directly for full details

NRG 40C

The NRG 40C anemometer is the industry standard anemometer used worldwide. NRG 40 anemometers have recorded wind speeds of 96 m/s (214 mph). Their low moment of inertia and unique bearings permit very rapid response to gusts and lulls. Because of their output linearity, these sensors are ideal for use with various data retrieval systems.

A four-pole magnet induces a sine wave voltage into a coil producing an output signal with frequency proportional to wind speed. The 40C is constructed of rugged Lexan cups molded in one piece for repeatable performance. A rubber terminal boot is included.

Wind Measurement
Admiral Sir Francis Beaufort (1774-1857), was responsible for the Beaufort scale of wind force, the knot (one nautical mile per hour) which has been the standard measurement for wind speed until quite recently. Modern meteorological practice however is to use metres per second (1 metre per second = 1.94 knots = 2.24 miles per hour).

The wind at a particular location can be influenced by a number of factors such as obstruction by buildings or trees, the nature of the terrain and deflection by nearby mountains.

The prevailing wind direction in Ireland is between south and west. Average annual wind speeds range from 7 m.p.h. in parts of south Leinster to over 18 m.p.h. in the extreme north. On average there are less than 2 days with gales each year at some inland places like Kilkenny but more than 50 a year at northern coastal locations such as Malin Head. The north and west coasts of Ireland are two of the windiest areas in Europe and have considerable potential for the generation of wind energy.