Volumetric flow meter
US5824915A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Jul 2, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02836
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A volume flow meter for flowing media that works on the transit-time principle includes a conduit measurement section carrying the flowing medium, two ultrasonic transducers arranged on opposite ends of the conduit measurement section sending ultrasonic signals into the flowing medium and/or receiving them from the flowing medium and a control and evaluation circuit. The ultrasonic transducers send ultrasonic signals into the flowing medium via thermally insulating ultrasonic waveguides. The control and evaluation circuit determines the volume flow based on the difference between the total transit time of the ultrasonic signals between the ultrasonic transducers and the sum of the transit times of the ultrasonic signals in the ultrasonic waveguies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.