Trace gas measurement apparatus for electrical equipment
US9874497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2015 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Aug 27, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/06113
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a trace gas measurement apparatus for electrical equipment that includes at least one sample cell configured to collect an oil sample from the electrical equipment. The sample cell having an oil receiving portion for receiving an oil sample, at least one perforated or porous sheet within a head space thereof for receiving the oil sample from the oil receiving portion, housing the oil sample thereon, and separating a new oil sample received from an existing oil sample within the at least one sample cell. The trace gas measurement apparatus also includes an oil pump for selectively pumping oil into and out of the sample cell, and a control module controlling operation of the oil pump, to adjust an oil level and air pressure within the sample cell, for performing an extraction process of trace gases within the oil sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.