Apparatus for detecting discontinuities in a fluid stream
US4651555A · kind A · utility
30Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 11, 1984 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Sep 11, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02433
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for detecting discontinuities, such as bubbles, in a fluid stream in a tube in which successive bursts of ultrasonic energy are transmitted through the tube and received. Discontinuities are detected by comparing each received signal against a reference level which is set over a longer term by the received signals, the presence of a discontinuity is detected by a reduced amplitude signal which causes an indication to be produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.