Flow compensated gas comparison probe

Details Flow compensated gas comparison probe Flow compensated gas comparison probe

1980-11-07

1982-08-10

Goldstein, Herbert

Measuring and testing

Gas analysis

Gas chromatography

73 1G, 73196, G01F 1300

Patent

active

043431771

ABSTRACT:
A gas comparison probe contains first and second sensor elements isolated om each other. Air is drawn across a surface to be monitored and directed onto the first sensor element. Air is drawn from a location spaced away from the surface to be monitored and directed onto the second sensor element. A flow constrictor in the air flow path to one of the sensor elements is used to calibrate the outputs of the two sensor elements under known conditions before attempting to monitor air flow which may contain a gas to be detected.

REFERENCES:
patent: 2734381 (1956-02-01), Jacobson
patent: 3106088 (1963-10-01), Kieselbach
patent: 3334513 (1967-08-01), Thomas
patent: 3416357 (1968-12-01), Kelsey et al.
patent: 3437446 (1969-04-01), Pierce
patent: 3474661 (1969-10-01), Gerdes
patent: 3715911 (1973-02-01), Chuan

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