Patent ID: 11920970
Assignee: ROSEMOUNT TANK RADAR AB
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 3:
4. A method of verifying operation of a radar level gauge system, comprising the steps of claim 2, and additionally comprising the steps of:
generating and transmitting an electromagnetic second transmit signal;
propagating the second transmit signal through the tank atmosphere vertically towards the surface of the product;
receiving an electromagnetic second reflection signal resulting from reflection of the second transmit signal at the surface of the product;
determining a measure indicative of the filling level based on a timing relation between the second transmit signal and the second reflection signal; and
verifying operation of the radar level gauge system by comparing the filling level determined based on the measure indicative of the propagation direction of the first reflection signal and the known horizontal distance between the radar level gauge system and the corner reflector with the filling level determined based on the timing relation between the second transmit signal and the second reflection signal.