Method for operating a gas sensor
US6289719A · kind A · utility
6Cited by
9References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Jun 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4067
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of operating a gas sensor having two sensor electrodes whose output signal is evaluated in an evaluation circuit connected downstream of the sensor electrodes, the sensor electrodes being arranged in an ion-conducting ceramic and being therefor heated by an electrical heater, characterized in that a pulsewidth modulated heater voltage signal is applied to the heater; and that a compensation signal is superposed on the output signal of the sensor electrodes, the compensation signal being essentially formed so as to be counterclocked and inverted to the pulsewidth modulated heater voltage signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.