Nitrogen oxide concentration sensor
US6071393A · kind A · utility
35Cited by
19References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 30, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | May 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/419
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A small-sized inexpensive nitrogen oxide concentration sensor capable of measuring the concentration of the nitrogen oxide in a measuring gas to a high accuracy. A first oxygen pumping cell, an oxygen concentration measuring cell and a second oxygen pumping cell are formed in different solid electrolyte layers of zirconia and electrodes of oxygen concentration measuring cell are isolated from electrodes of the oxygen pumping cells by insulating film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.