System for determining and/or monitoring a process variable of a medium

US10302479B2 · kind B2 · utility

Assignee

• Endress+Hauser SE+Co. KG · DE

Inventors

• Michael Dötsch · Lindenberg im Allgäu, DE
• Franco Ferraro · Bad Kötzting, DE
• Philipp Walser · Eimeldingen, DE
• Andreas Krumbholz · Maulburg, DE
• Robert Schmidt · Schopfheim, DE

Key dates

• Filing date: Nov 14, 2014
• Grant date: May 28, 2019
• Expiry date: Feb 17, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F23/2968
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system for determining and/or monitoring a process variable of a medium in a container, comprising a sensor module with an oscillatable unit, which is arranged in such a manner in the container that the oscillatable unit extends to a defined immersion depth in the medium, or that the oscillatable unit is placed at the height of the predetermined fill level, a tubular extension and/or a temperature reduction unit of a defined length, a contacting module and an electronics module, composed of an exciter/receiving unit, which excites the oscillatable unit to execute oscillations and receives the oscillations of the oscillatable unit. Two electrical coupling paths are associated with the electronics module, and a control/evaluation unit, which based on at least one oscillation variable of the oscillations or based on a change of an oscillation variable of the oscillations, provides information concerning the process variable or the reaching of the predetermined fill level. The sensor module and the electronics module are either electrically connected directly with one another, wherein one of the two electrical coupling paths is activated, or wherein the sensor module and the electron…