Electro-kinetic pressure/flow sensor
US7516658B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Jun 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F5/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transmitter senses flow or pressure of a process fluid in a process pipe. The process pipe may include a flow restrictor positioned therein that carries a primary flow of a process fluid. Impulse piping is configured to carry a secondary flow of the process fluid from an upstream side of the flow restrictor to a downstream side. An electro-kinetic element is positioned within the impulse piping and is configured to generate an electro-kinetic potential related to the primary flow. Measurement circuitry in the transmitter is configured to measure the electro-kinetic potential across the electro-kinetic element and relate the electro-kinetic potential to the flow of process fluid through the process pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.