Gas detecting device

Details Gas detecting device Gas detecting device

1989-02-02

1990-09-25

Williams, Hezron E.

Measuring and testing

Gas analysis

With compensation detail

98 201, G01N 2700

Patent

active

049585134

ABSTRACT:
When the output of a gas sensor is approximately constant, the sensor output is stored as a reference output. Evolution of a gas is detected from variations in the sensor output from the stored reference output. The sensor output which is constant is detected by establishing that the difference between a maximum and a minimum of sensor output in a predetermined section is not greater than a specified value.

REFERENCES:
patent: 4167925 (1979-09-01), Hosaka et al.
patent: 4437391 (1984-03-01), Eguchi et al.
patent: 4458583 (1984-07-01), Fukui et al.
patent: 4478049 (1984-10-01), Fukui et al.

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