Mass-flow sensor using aerodynamic damping
US5000050A · kind A · utility
6Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1990 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Mar 12, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/388
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A fluid mass flow sensor uses the effect of aerodynamic drag on a vibrating object. The drag damps the resonance oscillations of the vibrator in an amount proportional to the mass flow. An electronic feedback circuit associated with the mass flow sensor has the effect of allowing for fast response time despite the use of a high Q vibrator and allows for electronic calibration of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.