Oxygen analyzer
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United States of America Patent
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-
Oct 2, 1990
Grant Date -
N/A
app pub date -
Sep 14, 1988
filing date -
Oct 2, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved oxygen analyzer device is disclosed which comprises a gas flow passage having inlet and exhaust ports, an oxygen concentration detector in proximity to the exhaust port and first and second parallel intermediate flow passages, one of which contains a purifier to remove oxygen from the gas flowing therethrough. The device is characterized by the use of metal, diaphram-type, three-way valves in the branch-off and junction points between the intermediate flow passages. The valves eliminate dead space in conventional devices that extends both the calibration and analysis time of such devices.
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