Method and system for gas detection
US10508988B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2018 |
| Grant date | Dec 17, 2019 |
| Priority date | — |
| Expiry date | Mar 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3188
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas sensor is used for determining a concentration of a predetermined gas in a measurement volume. The gas sensor comprises a light source and a detector arranged to receive light that has passed through the measurement volume. During a first measurement period, the detector is used to make a first measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The first measurement is compared to a predetermined threshold value. If the threshold is crossed, during a second measurement period the detector is used to make a second measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The concentration of said gas in said measurement volume is calculated using the first and/or second measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.