NOx sensor and methods of using the same
US7294252B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2006 |
| Grant date | Nov 13, 2007 |
| Priority date | — |
| Expiry date | Oct 3, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein are NOx sensors and methods of using the same. In one embodiment, a method for sensing NOx comprises: contacting a first NOx electrode with the gas, contacting a second NOx electrode with the gas, determining a NO2 emf between the first NOX electrode and a first reference electrode, determining a NOx emf between the second NOx electrode and a second reference electrode, and determining a NO2 concentration and a NO concentration using the NO2 emf and the NOx emf. The first electrode can be at a first temperature of greater than or equal to about 700° C., and the second electrode can be at a second temperature of about 500° C. to about 650° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.