Method for CO detection and its apparatus
US5517182A · kind A · utility
19Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Sep 20, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/124
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A CO detector, utilizing periodical temperature change of a metal oxide semi-conductor gas sensor, is equipped with a backup battery. When power cut of a commercial power supply is detected, the detector will be driven by the battery, and the gas sensor will be heated at 50.degree.-100.degree. C. for from 30 seconds to 1 minute and will be kept at room temperature for about 30 minutes. CO is detected by the minimum sensor output after the heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.