Differential pressure measurement arrangement and method for identifying blocked differential pressure lines

US11181432B2 · kind B2 · utility

Assignee

• Endress+Hauser SE+Co. KG · DE

Inventors

• Long Yang · Shenyang, CN
• Max Jehle · Wehr, DE
• Davide Parrotto · Weil am Rhein, DE

Key dates

• Filing date: Jul 14, 2017
• Grant date: Nov 23, 2021
• Expiry date: Jul 5, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B2219/24033
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for diagnosing a differential pressure line of a differential pressure measurement arrangement includes capturing a first set number of differential pressure values, which represent a difference between a first media pressure and a second media pressure within a process, and checking whether the differential pressure measurement arrangement and/or the process are in a state that allows a diagnosis of the differential pressure line. Where it is determined that the differential pressure measurement arrangement and/or the process are not in a state that allows a diagnosis of the differential pressure line, the differential pressure values are captured anew such that the previously captured differential pressure values are deleted or overwritten. Otherwise, a diagnostic function to determine whether a differential pressure line is blocked is carried out.