Ultrasonic flow meter
US4052896A · kind A · utility
21Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1975 |
| Grant date | Oct 11, 1977 |
| Priority date | — |
| Expiry date | Nov 26, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/667
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved apparatus and method for measuring fluid flow in a conduit enables the transmission of ultrasonic signals through the fluid with low signal attenuation and unique phase determination. Ultrasonic burst signals are simultaneously transmitted to axially spaced receivers adjacent a conduit. The transmitted signal is made up of a signal burst having two different frequency signals. The signal frequencies are selected to prevent unwanted signal attenuation by entrapped gases in the fluid and to allow an unambiguous phase determination for the received signal burst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.