Combustible gas detection system
US4305724A · kind A · utility
67Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1980 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | Aug 4, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus for measuring combustible gases in which an active sensor is maintained at controlled, temperature in respect of a reference sensor by means of a bridge-sampling system and a variable duty cycle system responsive to the bridge sampling system adapted to periodically bypass the current from the active sensor in a reference bridge network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.