The radar object position antenna emits a narrow microwave pulse that is transmitted downward through the antenna. After the pulse wave touches the surface of the measured medium, it is reflected back and received by the antenna system again. The signal is transmitted to the electronic circuit part and automatically converted into object level signal (Because pulses travel so fast, the time it takes for an electromagnetic wave to reach its target and bounce back to the receiver is almost instantaneous).
The datum of measurement: Spiral bottom surface or sealing surface of flange.
When using radar level timing, make sure that the highest material level cannot enter the measurement blind area.