The probe emits a high-frequency pulse and propagates along the cable probe. When the pulse meets the material surface, it is reflected back and received by the receiver in the instrument, and the distance signal is converted into a level signal.

The radar level gauge is a non-contact measurement or TDR guided wave measurement; the radar level gauge uses electromagnetic pulses for rapid measurement, with high precision and strong anti-interference ability; corrosion resistance (probes are mostly made of 316 stainless steel or PVDP and other materials); pressure resistance High; high temperature resistance.