Method for monitoring condition of vibronic sensor for determining and monitoring process variable of medium in container, involves determining status indicator from comparison measured value for amplitude and frequency with reference value

US12092507B2 · kind B2 · utility

Assignee

• Endress+Hauser SE+Co. KG · DE

Inventors

• Kaj Uppenkamp · Wehr, DE
• Christian Strittmatter · Geislehen, DE
• Armin Wernet · Rheinfelden (Baden), DE
• Sascha D'Angelico · Tuttlingen, DE

Key dates

• Filing date: Apr 8, 2020
• Grant date: Sep 17, 2024
• Expiry date: Feb 10, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F23/2967
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for monitoring condition of a vibronic sensor for determining and/or monitoring at least one process variable of a medium in a containment and having at least one sensor unit having a mechanically oscillatable unit includes: exciting the mechanically oscillatable unit by means of an excitation signal such that mechanical oscillations are executed, and receiving the mechanical oscillations in the form of a received signal, determining a measured value for amplitude and a measured value for frequency of the received signal, comparing the measured values for amplitude and frequency with reference values for amplitude and frequency, and ascertaining a condition indicator from the comparison.