Flow measuring device for detecting a volume quantity relating to a fluid volume flowed through a measuring volume since a start of a measurement

US11624638B2 · kind B2 · utility

Assignee

• Diehl Metering GmbH · DE

Inventors

• Florian Herrmann · Maulmacher, DE
• Alexander Hofmann · Hanau, DE
• Marcus Wetzel · Nuremberg, DE
• Frederik Neder · Erlangen, DE

Key dates

• Filing date: Sep 21, 2020
• Grant date: Apr 11, 2023
• Expiry date: Jul 16, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F1/667
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A flow measuring device detecting a fluid volume quantity since a start of a measurement includes a processing device determining a current flow rate parameter at measurement times using measurement data of a sensor, to increase a volume quantity based on a current flow rate parameter when operating in a first operating mode, and to keep the volume quantity constant when operating in a second mode. The processing device stores the current flow rate parameter for each measurement time in a data memory, resulting after several measuring times in storing previous flow rate parameters determined at these measuring times. Upon satisfying a switchover condition, depending on the current flow rate parameter, during operation in the second mode, the processing unit switches over to the first mode, and the volume quantity increases as a function of the current flow rate parameter and a predefined number of previous flow rate parameters.