Amplitude profiling in filling-level measuring devices

US8776594B2 · kind B2 · utility

Assignee

• VEGA Grieshaber KG · DE

Inventors

• Roland Welle · Oberwolfach, DE
• Karl Griessbaum · Nettetal, DE
• Juergen Motzer · Gengenbach, DE
• Martin Gaiser · Alpirsbach, DE
• Christian Hoferer · Offenburg, DE
• Manuel Kaufmann · Berghaupten, DE
• Joachim Benz · Hausach, DE

Key dates

• Filing date: Jul 14, 2011
• Grant date: Jul 15, 2014
• Expiry date: Jul 16, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S7/35
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An electronics unit and a method for a filling-level measuring device for determining a filling level. The unit including an arithmetic unit determining a functional relationship between a distance between a filling material surface and the filling-level measuring device and an amplitude of a signal component reflected by the filling material surface and received by the filling-level measuring device; an amplitude profiler creating a profile of amplitude values of filling level echoes which have been measured so far; and an amplitude evaluator determining an expected amplitude of the filling level echo at a particular location with help of the profile of amplitude values.