Endress + Hauser Gmbh + Co. Kg

Yong Jin

Dietmar Spanke

Marc Baret

Edgar Schmitt

A reliable method for measuring a fill level of a fill substance in a container using a fill level measuring device working according to the travel-time principle, wherein, periodically, transmission signals are sent in the direction of the fill substance, their echo signals are registered and converted into an echo function, at least one echo characteristic of the echo function is determined and, on the basis of the echo characteristics of at least one preceding measurement, a prediction is derived for the echo characteristics to be expected in the case of the current measurement, the echo characteristics of the current measurement are determined taking into consideration the prediction, and, on the basis of the echo characteristics, the current fill level is determined.

Filling level measurement method according to the running time principle

A fill level measuring device for measuring a fill level of a fill substance in a container and a method for fill level measurement using this fill level measuring device are provided. The fill level measuring device can perform fill level measurements upon re-start immediately on its own and reliably, and includes: at least one antenna, which issues transmitted signals (S) and receives echo signals (E); a signal processor, which serves for deriving from the received echo signals (E) an echo function containing the amplitudes (A) of the echo signals (E) as a function of travel time; a memory for storing data in a table whose columns serve for storing the echo functions in the columns in a sequence which corresponds to the fill levels associated with the individual echo functions; and an evaluation unit, which accesses the table for determining the fill level.

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Lörrach, Germany

Yong Jin