Method for ascertaining and monitoring fill level of a...

Details Method for ascertaining and monitoring fill level of a... Method for ascertaining and monitoring fill level of a...

2011-06-21

2011-06-21

Tang, Minh N (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

C324S642000, C324S644000, C073S001730, C073S29000R

Reexamination Certificate

active

07965087

ABSTRACT:
A method for ascertaining and monitoring the fill level of a medium in a container the method utilizes a fill-level measuring device, wherein, according to the technique of time-domain reflectometry, high-frequency measuring signals are guided via at least one measuring probe in the direction of the medium, reflected on at least one interface of the medium as wanted echo signals or on disturbance locations as disturbance echo signals, and received. A current echo curve is formed from a produced, reference echo signal, wanted echo signals and disturbance echo signals, wherein, at least from a first disturbance echo signal and the reference echo signal, which are caused in a measurement-inactive region of the fill-level measuring device, a base point is located in the current echo curve, and wherein the fill level is ascertained from the distance between the base point and the wanted echo signal formed in a measurement-active region of the fill-level measuring device.

REFERENCES:
patent: 6679115 (2004-01-01), Heidecke
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Peter Devine, “Radar Level Measurement—The User's Guide”, Vega Controls, 2000.

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