Method and apparatus for measuring concentration of a chemical component in a gas mixture
US6946852B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 2, 2003 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Jul 19, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/228
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chemical concentration detecting system for determining the relative concentration of a chemical component in a gas mixture. The gas mixture may include chemical components that are antimicrobial chemicals, as well as chemical components that are base chemicals, acting as a diluent for the antimicrobial chemical, or as a vehicle or carrier for the antimicrobial chemical. A capacitor is exposed to the gas mixture, wherein the gas mixture acts as a dielectric between the plates of the capacitor. Permittivity of the dielectric is affected by the relative concentrations of the chemical components, and thus a measurement of the capacitance is used to determine the relative concentration levels of the chemical components in the gas mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.