Radar level antennas emit narrower microwave pulses that are transmitted downward through the antenna. After the microwave contacts the surface of the measured medium, it is reflected back and received again by the antenna system. The signal is transmitted to the electronic circuit and automatically converted to the level signal. The time taken is almost instantaneous).
Measurement datum: Thread bottom surface or flange sealing surface. Note: When using radar level timing, be sure to ensure that the highest material level cannot enter the measurement blind zone (the area shown by D in the figure).