Method of measuring the flow rate of a liquid flowing in a fluidic channel and implementation device
US8381598B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 19, 2009 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Dec 26, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2300/0645
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a method of measuring the flow rate of an electrically conductive liquid in laminar flow and to an implementation measurement device that are easy to implement, simple to produce and compact. For this purpose, the invention provides a device for measuring the flow rate, comprising: a channel (1); a pair of electrodes (2a-2b); and at least one device (3) for measuring the voltage (V) between the electrodes (2a-2b) of said pair, an electrical double layer forming at the interface of each electrode with the conducting liquid. The device comprises means (4, 5) designed so that, when the conducting liquid is flowing through the channel, the flow velocity fields in the diffuse layers facing each electrode are different and so that the convective/diffusive charge equilibria of the electrical double layer at the interface of each electrode are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.