Leak detector and method for detecting leaks
US10578512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2016 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Mar 7, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leak detector for detection of leaks from an object to be tested by detection of a tracer gas, the leak detector including: an inlet of gases; a pumping device; a pumping line connecting the inlet of the gases to the pumping device; a device for detection of tracer gas fitted to the pumping line, as bypass of the pumping device, the device for detection of tracer gas including a probe configured to ionize the gas molecules and to measure current of the ionized gas molecules, and a separating membrane arranged upstream of the probe. The separating membrane is a monoatomic layer of graphene deposited on a gas-permeable substrate of the device for detection of tracer gas including selection orifices, the greatest dimension of which is less than 5 angstroms, made in the monoatomic layer of graphene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.