Device and method for calibrating a film chamber for leak detection
US10670489B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2015 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | May 1, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/329
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for calibrating a test chamber, which encloses an interior volume (20), is designed as a film chamber (12) comprising at least one flexible wall region (14, 16), and is connected in a gas-conducting way to a pressure sensor (30), to a vacuum pump (26), and via a calibration valve (34) to a calibration chamber (36) enclosing a calibration volume (37), comprising the following steps: evacuating the film chamber (12); measuring the pressure difference inside of the film chamber (12); after the evacuation has been completed, connecting the calibration volume (37) in a gas-conducting manner to the interior volume (20) of the film chamber (12) while measuring the pressure change, wherein the pressure in the calibration chamber (36) is greater than the pressure in the film chamber (12) before the connection to the film chamber (12). A corresponding device is likewise disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.