Measuring apparatus to determine the flow of a fluid
US6898984B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2003 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Aug 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring apparatus (1) for determining the flow (Q) of a fluid (2). The apparatus has a hollow body (3), with an inflow (4) and an outflow (5) for the fluid (2). A magnetic sample (6) is movably arranged in the hollow body (3) and can be acted upon with a working pressure by the fluid (2). The measuring apparatus (1) further has at least one position sensor (7) to determine the position of the magnetic sample (6), an electromagnet (8) to exert a magnetic force on the magnetic sample (6), and a control device (9) for the electromagnet (8) which is connected signal-wise to the position sensor (7). The control device (9) includes regulating means (10) which control the electromagnet (8) with the aid of a signal of the position sensor (7) so that the magnetic sample (6) is held in a position (X) against the working pressure, with the magnetic sample (6) being designed and arranged such that the fluid (2) can flow through the hollow body (3) from the inflow (4) to the outflow (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.