Sampling probe flow sensor
US4914947A · kind A · utility
15Cited by
2References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Sep 30, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/6842
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A mass air flow sensor having a probe body defining a first arcuate passageway connecting a flow entrance opening aligned with an axis and a flow exit opening offset from the axis so that contaminants suspended in fluid flowing through the first passageway are driven by centrifugal force toward the outer wall thereof. A second passageway is connected to a sampling port in the inner wall of the first passageway, and has located therein a flow detector of the type having a thin film heater and at least one thin film heat sensor spaced from the heater along the direction of flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.