Method and device for measuring foreign bodies in the measuring medium
US8340920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2008 |
| Grant date | Dec 25, 2012 |
| Priority date | — |
| Expiry date | Jun 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/58
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure relates to a method for measuring a flow rate, in particular in an inductive flowmeter, in which an electrical signal is applied to a measuring medium flowing in a measuring tube at electrodes, and the response function at measuring electrodes is determined as a measure of the flow rate, and to a corresponding flowmeter device. So that the flow effects of gas bubbles and/or particles in the measuring medium can be distinguished from other faults and the determination of the flow rate is thus more reliable, the disclosure proposes that, in order to detect gas bubbles and/or particles in the measuring medium, a magnetic and/or electric field is applied to the latter and the potential and/or current is/are read out at one or more electrodes, the signal profile A(t), together with its signal-to-noise component, is measured electronically as a function of the time, and a statistical evaluation is used to infer the existence of gas bubbles and/or particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.