Patent ID: 11927469
Assignee: ROSEMOUNT TANK RADAR AB
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of proof-testing a radar level gauge system arranged to determine a filling level of a product in a tank, the method comprising the steps of:
transmitting an electromagnetic transmit signal towards a surface of the product in the tank;
receiving an electromagnetic reflection signal resulting from reflection of the transmit signal at the surface of the product;
forming a measurement representation based on the transmit signal and the reflection signal, the measurement representation comprising surface echo information indicative of the filling level of the product;
adding, to the measurement representation, proof test echo information indicative of a predefined proof test level corresponding to, or being higher than, a high level alarm limit of the radar level gauge system, resulting in a modified measurement representation;
processing the modified measurement representation to determine a proof test level based on the modified measurement representation; and
providing a signal indicative of a result of the processing.