Leak detection method and system for product lines in fuel dispensing systems
US5689061A · kind A · utility
21Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1996 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Aug 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/2892
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leak detection system which operates at relatively high pressures and senses relatively large pressure drops to monitor for leakage in fuel product lines such as those used for dispensing of fuel at gasoline service stations. Leakage tests of various degrees of precision are carried out, and the possible effects of thermally induced expansion and contraction are taken into account. The system also checks for faulty pressure sensors and dry tank conditions. Leak indications are confirmed by a time delay and retesting before a leak alarm is given.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.