Gas monitor system

Details Gas monitor system Gas monitor system

1977-01-31

1978-09-26

Favors, Edward G.

Combustion

Timer, programmer, retarder or condition responsive control

By combustion or combustion zone sensor

236 15E, 431 24, F23H 502

Patent

active

041166124

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.

REFERENCES:
patent: 3788795 (1974-01-01), Zeitlin
patent: 3861855 (1975-01-01), Seider
patent: 4039123 (1975-08-01), Frankel
patent: 4043743 (1977-08-01), Seider
patent: 4046318 (1977-09-01), Ripley

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