Unlike cup anemometers, this anemometer has to be parallel to the wind and rotate about a horizontal axis to obtain accurate data. These are also referred to as propeller or windmill anemometers and are similar to the cup design but instead of cups, they have wind blades that spin.
They are like the propellers of a plane and much more accurate than a cup anemometer. A cup anemometer is utilized by meteorologists, educational institutions, researchers, for commercial and research purposes.Īfter cup anemometers, there have been several new types of anemometers and the vane anemometer is one of them. This type of anemometer doesn’t need to point towards the source to sense the wind speed. They’re mostly designed to be mounted on structures such as buildings or sailboats, but some handheld models are also available. To calculate the speed of the wind blow, the number of rotations are counted and calibrated on a digital or analog wind meter. As wind levels pick up, the cups spin faster, with the instrument capturing the speed of the wind which is then shown on a digital display. They feature a set of either three or four cups that spin on a mounted pole by the wind. These are the simplest type and among the most accurate. Cup anemometers are highly reliable and rugged. These are most likely, the oldest form of anemometers and they have been around for centuries.
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