An anemometer looks like a weather vane, but instead of measuring which direction the wind is blowing with pointers, it has four cups so that it can more accurately measure wind speed. Each cup is attached to the end of a horizontal arm, each of which is mounted on a central axis, like spokes on a wheel.

How does an anemometer work?

An anemometer is an instrument that measures wind speed and wind pressure. As the wind blows, the cups rotate, making the rod spin. The stronger the wind blows, the faster the rod spins. The anemometer counts the number of rotations, or turns, which is used to calculate wind speed.

What are the uses of anemometer?

Applications of Anemometers
For measuring the wind pressure.For measuring the flow of the wind and the direction of the wind.Sometimes the drone users or RC plane users also use it. Long-range shooters and pilots also use it.Skydivers use it to evaluate wind velocity before they leap into the abyss.

It consists of an electrically heated, fine-wire element (0.00016 inch in diameter and 0.05 inch long) supported by needles at its ends. While hot wire anemometers are best suited for clean gases at low velocities, venturi meters can also be considered for some liquid (including slurry) flow applications.