Method and apparatus for sensing NOx
US5217588A · kind A · utility
32Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Feb 27, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and method for determining the concentration of NOx in a gas mixture. The gas mixture is supplied to two electrodes at which different NOx decomposition conditions are present. The electrodes may be of different materials or sizes or may be positioned in different gas enclosure environments. The NOx decomposes at different rates at the two electrodes and an emf is thus produced between the electrodes. The concentration of NOx in the gas mixture is determined from the measured emf.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.