Detection of step charges of pressure in vessels and apparatus therefor
US4706501A · kind A · utility
51Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1981 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Nov 9, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Detectors for monitoring step changes of pressure in a vessel, for example a pipeline, include sensors outside the vessel for detecting a change in its dimensions resulting from a fall in pressure occurring at a minimum rate of 0.005 bars per second which is not followed by a corresponding rise in pressure within 0.05 seconds. They are useful in detecting leaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.