ultrasonic level transmitter

In the process of use, we generally call the sound wave with a frequency of more than 20kHz ultrasonic wave, ultrasonic wave is a kind of mechanical wave, that is, mechanical vibration in the elastic medium in a propagation process, it is characterized by high frequency, short wavelength, small diffraction phenomenon, and good directivity, can become a ray and directional propagation.

Radar level meter adopts the mode of transmitting – reflecting – receiving. The antenna of the radar level gauge emits electromagnetic waves, and the radar waves travel at the speed of light. After these waves are reflected by the surface of the measured object, they are received by the antenna. The time from transmission to reception of the electromagnetic wave is proportional to the distance to the liquid surface.

The transmission of sound waves requires a medium, so they cannot travel in a vacuum. Therefore, the limitations of ultrasonic level meter in practical application are still very large, and there are many shortcomings compared with radar level meter.