The difference between various wind speed meters?
There are three types of anemometers: differential pressure type, impeller type, and hot bulb type:
The differential pressure method is a classic method of measuring flow velocity in fluid mechanics. It mainly relies on the pitot tube and differential pressure gauge to measure the dynamic pressure, and then calculates the flow velocity according to the Bernoulli equation.
The impeller type mainly depends on the wind to blow the impeller to rotate and generate electromagnetic signals to measure. The advantage of this method is that the instrument is relatively durable and is often used for long-term measurement. The three-cup anemometer used in meteorological observation is also based on the same principle.
The main principle of the hot bulb type is that the probe sets a constant temperature, and the heat will be taken away after the air flows through the probe. At this time, the probe will be heated to the set temperature. During this process, electrical signals will be collected by the instrument, and then Calculate the wind speed.
