Flammable gas detection

Details Flammable gas detection Flammable gas detection

1990-11-26

1991-12-10

Williams, Hezron E.

Measuring and testing

Gas analysis

Gas of combustion

422 94, G01N 2716

Patent

active

050707213

ABSTRACT:
An oxygen sensor (1) with an inlet (2) connects with a small chamber (3). An inlet provided with a diffusion barrier (4) permits flammable gas and oxygen to enter the chamber. The oxygen concentration within the chamber is low, and a catalytic element (5) within the chamber causes combustion of flammable gas, thus consuming oxygen within the chamber. The signal from the oxygen sensor is processed to calculate a concentration for the flammable gas.

REFERENCES:
patent: 3421362 (1969-01-01), Schaffer
patent: 3607084 (1921-09-01), Mackey et al.
patent: 4128458 (1978-12-01), Obiaya
patent: 4305724 (1981-12-01), Micko

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