Fill level measuring device and method for fill level measurement using the travel time principle

US7046189B2 · kind B2 · utility

Assignee

• ENDRESS+HAUSER GMBH+CO.KG · DE

Inventors

• Dietmar Spanke · Steinen, DE
• Marc Baret · Kembs, FR
• Edgar Schmitt · Lambach, DE
• Yong Jin · Hwaseong-si, KR

Key dates

• Filing date: Dec 22, 2003
• Grant date: May 16, 2006
• Expiry date: Dec 22, 2023

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F25/20
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

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.