Patent ID: 6930632

Claim:
A method for determining the level of a product in the container, the product defining a surface in the container, comprising the step of: transmitting transmission signals in the form of a first binary-weighted train of transmission pulses in the direction of the surface of the product at a predetermined pulse repetition duration (T R ) and with a predetermined sequence length (L); providing a second, preferably continuous train, of sampling pulses of pulse repetition duration (T R ) with a time lag (T S ) relative to the first transmission pulses; sampling echo signals of the first transmission pulses reflected from the surface of the product with the second pulses; and retaining components of the sampling values that correspond to the echo signals with a propagation time (T S ), while components that correspond to echo signals with a transit of T S <T<T S +L·T R are deleted, wherein on the basis of the sampling values, the level of the product in the container is determined.