Flow monitoring system
US7120542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2004 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | May 1, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F5/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flow monitoring system includes a first temperature-sensitive resistive device, thermally coupled to a first portion of a fluid transfer apparatus, for producing a first temperature-dependant voltage signal representative of the temperature of the fluid within the first portion of the fluid transfer apparatus. A first current control device, coupled to the first temperature-sensitive resistive device, controls a first current signal flowing through the first temperature-sensitive resistive device. A second temperature-sensitive resistive device, thermally coupled to a second portion of the fluid transfer apparatus, produces a second temperature-dependant voltage signal representative of the temperature of the fluid within the second portion of the fluid transfer apparatus. A second current control device, coupled to the second temperature-sensitive resistive device, controls a second current signal flowing through the second temperature-sensitive resistive device. A monitoring circuit monitors the first and second temperature-dependant voltage signals and produces an output signal representative of the volume of fluid passing through the fluid transfer apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.