Berclamp-on ultrasonic flowmeter

US12339149B2 · kind B2 · utility

Assignee

• Endress+Hauser Flowtec AG · CH

Inventors

• Oliver Berberig · Weil am Rhein, DE
• Thomas Fröhlich · Münchenstein, CH
• Beat Kissling · Reinach, CH
• Quirin Muller · Bättwil, CH
• Klaus Bussinger · Münchenstein, CH

Key dates

• Filing date: Jun 16, 2021
• Grant date: Jun 24, 2025
• Expiry date: Feb 18, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G01P5/241
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A clamp-on ultrasonic flowmeter includes pairs of ultrasonic transducers arranged on an exterior of a pipeline, and an electronic measuring/operating circuit for operating the transducers and for registering and evaluating measurement signals and for providing measured values of volume flow or flow velocity. The pairs are implemented as 1-traverse or 2-traverse pairs. One-traverse pairs are arranged on opposite sides of the pipeline, and 2-traverse pairs are arranged on a same side of the pipeline. At least three pairs are arranged on the pipeline and are distributed peripherally. Adjoining pairs of a number of pairs have an inner angle down to a minimum inner angle (MIA) between one another measured about a pipeline axis, which minimum inner angle obeys the following relationship: MIA=360°/(T*N*F(T,N)) with T as number of traverses and F(T,N)=0.38+0.62*T+(0.048−0.01*T{circumflex over ( )}2)*(N−2){circumflex over ( )}2.