Calibration of instruments for measuring the permeability of a material
US7230696B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 2004 |
| Grant date | Jun 12, 2007 |
| Priority date | — |
| Expiry date | May 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/278
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system that calibrates instruments for measuring the light or air permeability of a material, and includes a calibration target which can be used for calibration of either light-based or air-based instruments. The calibration target simulates the material whose permeability is being measured, and includes a plate having multiple, angled or parallel rows of perforations provided therethrough. The permeability measuring instrument measures the permeability of the calibration target, and compares the measured permeability with a predetermined permeability of the calibration target and calibrates the permeability measuring instrument based upon the comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.