Hot film anemometer
US4911008A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1988 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Oct 3, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/698
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An anemometer comprising: orifice plate adapted to be disposed within a flow stream, including an orifice; a thin film bridge, spaced from and disposed downstream of the orifice plate for directing the stream exiting the orifice in a direction perpendicular to the flow direction and for insulatingly suspending a plurality of resistive elements within a portion of the flow stream exiting the orifice. The plurality resistive elements comprising a first resistive element conformally shaped to the orifice, and a second resistive element substantially circumferentially disposed about the first resistive element, the second resistive element comprising a sense resistor having a resistance which changes with flow and a circuit formed in part by the plurality of resistive elements, forming a sensing network therewith for generating a signal indicative of the flow stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.