Apparatus, method and sensor for measuring gas concentration
US12265053B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 2022 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Jun 2, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0042
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus, method and sensor for measuring gas concentration. The apparatus includes a sensing unit and a processing unit. The sensing unit includes a first selective water vapour-permeable membrane, a first working electrode and a second working electrode. The first selective water vapour-permeable membrane allows the first working electrode to be in contact with water molecules while to prevent this first working electrode from being in contact with the gas molecules to be measured. The first working electrode generates an electrical signal caused by change in relative humidity, the second working electrode generates a superimposed electrical signal caused by the change in relative humidity and the gas molecules to be measured, and the processing unit acquires concentration of the gas based on the electrical signal and the superimposed electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.