Flow sensor having an intermediate heater between two temperature-sensing heating portions
US5852239A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 12, 1997 |
| Grant date | Dec 22, 1998 |
| Priority date | — |
| Expiry date | Jun 12, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/6845
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flow sensor includes a first heating portion, provided at a first position in a flow of a fluid, which heats the fluid and outputs a voltage in response to a temperature of the first position. A second heating portion, provided at a second, downstream position in the flow of the fluid, heats the fluid and outputs a voltage in response to a temperature of the second position, the first position and the second position being spaced from each other in a direction parallel to the flow of the fluid. An intermediate heater, provided between the first heating portion and the second heating portion, heats the fluid at an intermediate position between the first position and the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.