Patent ID: 11940315
Assignee: ROSEMOUNT TANK RADAR AB
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The filling level determination system according to claim 1, wherein:
the filling level determination system further comprises a second measurement unit for arrangement at a second measurement position on the outside of the tank, different from the first measurement position, the second measurement unit including a transceiver for generating, transmitting and receiving electromagnetic signals; and an antenna arrangement coupled to the transceiver for radiating an electromagnetic second transmit signal generated by the transceiver from the second measurement position towards a second target position on the tank wall, and for returning an electromagnetic second reflection signal resulting from reflection of the transmit signal at the second target position back towards the transceiver;
the tank deformation data is additionally indicative of a known relation between the level of the product in the tank and deformation of the tank at the second target position;
the reference data is additionally indicative of a reference distance between the second measurement position and the second target position for a known level of the product in the tank; and
the processing circuitry is configured to determine the filling level additionally based on a timing relation between the second transmit signal and the second reflection signal.