Ultrasonic anemometers are a powerful alternative to mechanical anemometers.
The working principle of the ultrasonic anemometer is to use the ultrasonic time difference method to measure wind speed. Because it overcomes the inherent shortcomings of the mechanical wind speed and direction meter, it can work normally all day long and for a long time, and is used more and more widely. It will be a powerful substitute for the mechanical anemometer.
How ultrasonic anemometer works
The working principle of the ultrasonic anemometer is to use the ultrasonic time difference method to measure wind speed. The speed of sound propagating in the air will be superimposed with the speed of the airflow in the wind direction. If the ultrasonic wave propagates in the same direction as the wind, its speed will increase;
On the contrary, if the propagation direction of ultrasonic waves is opposite to the direction of the wind, its speed will slow down. Therefore, under fixed detection conditions, the speed of ultrasonic waves propagating in the air can correspond to the wind speed function. The wind speed and direction can be obtained by calculation. Since the speed of sound waves is greatly affected by temperature when they propagate in the air; the anemometer detects two opposite directions on two channels, so the effect of temperature on the speed of sound waves is negligible.
Users can select the wind speed unit, output frequency and output format according to their needs. You can also choose a heating device (recommended in cold environments) or analog output according to your needs. It can be used with computers, data collectors or other acquisition equipment with RS485 or analog output. If necessary, multiple units can also be used to form a network.
Let's take a look at the application fields of ultrasonic anemometers.
Ultrasonic anemometers are easy to use and can be used flexibly in many fields. They are widely used in urban environment monitoring, wind power generation, meteorological monitoring, bridges and tunnels, navigation ships, aviation airports, various fan manufacturing industries, and areas that require ventilation and exhaust systems. Industry etc.
