An anemometer is a meteorological device used to measure aspects of wind. An anemometer is a device typically found in a weather station, although the devices can be used as a stand-alone as well. The name is derived from the Greek word "anemos," which means wind.
Anemometers measure several aspects of wind:
Typically, anemometers are categorized into these two categories: velocity and pressure anemometers. However, because there is such a close connection between these two aspects of wind (velocity and pressure), either anemometer will usually give adequate information about both.
Velocity anemometers are divided into two classes: those that require some sort of wind vane and those that do not.
A mechanism at the axis records and calculates the number of revolutions, which then allows wind velocity to be observed. Cup anemometers are simple and do not require intricacies such as a weather vane, but they do not record velocity at any given moment as accurately as other types do. For example, a sudden gust of wind may pass by unrecorded.
Plate anemometers are typically divided into two classes: plate and tube anemometers.