Gas detecting element
US4259292A · kind A · utility
22Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1978 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Jan 31, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas detecting element comprising a hollow cylindrical insulative body, a pair of electrodes provided on the outer periphery of the insulative body, a gas detecting body covering up the outer periphery of the insulative body and the electrodes, a catalyst layer made of a catalytic material and coated on said gas detecting body, thereby covering up the surface of said gas detecting body, and a heater disposed in the hollow of the insulative body. When the gas detecting element comes into contact with a gas, the surface resistance of the gas detecting body varies, thereby detecting the gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.