2、 Measurement principle

The pole type guided wave radar level gauge antenna emits narrow microwave pulses, which are transmitted downwards through the antenna. After the microwave contacts the surface of the measured medium, it is reflected back and received by the antenna system again. It is then transmitted to the electronic circuit section and automatically converted into a level signal. Due to the extremely fast propagation speed of microwaves, the time it takes for electromagnetic waves to reach the target and reflect back to the receiver is almost instantaneous. The schematic diagram is as follows.