Method for detecting an operation malfunction of a leakage inspector, and a leakage inspector having a function to detect an operation malfunction thereof
US7805259B2 · kind B2 · utility
3Cited by
5References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2007 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Apr 20, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/3263
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting an operation malfunction of a leakage inspector causes the leakage inspector to execute a calibration process and an inspection process. The calibration process seals air inside a first device serving as a reference device and measures changes in pressure over two time intervals. The inspection process seals air inside a second device to be checked for a leak and measures changes in pressure over two time intervals. A ratio is calculated from these measured changes in pressure and the ratio is used to determine whether an operation malfunction occurs in the leakage inspector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.