Gas monitor system
US4116612A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Jan 31, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2235/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A gas monitor system to monitor combustable or flammable gases present in the exhaust flue of the monitored equipment and to adjust the damper on a real time basis as the system is operated to continuously adjust the concentration of combustible or flammable gases in the monitored equipment. The system also includes self-check calibration circuitry to regularly check that the system is in calibration and that the sensor element in the exhaust has not suffered from a sensitivity decrease. Calibration gas is fed to the sensor on a regular basis. If the calibration circuitry does not complete a proper timing cycle, the system is disabled indicating that the instrument is out of calibration or the sensor is defective.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.