Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Patent
1989-04-25
1990-08-14
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
7386373, 7386412, 251355, G01N 120
Patent
active
049485652
ABSTRACT:
A metering valve assembly for use in an analytical system includes fixed and movable valve members that have slidably engaged faces. One valve member includes a first metering chamber in the form of a through passage having an axis perpendicular to the direction of relative valve motion and a second metering chamber of elongated shape that has a length at least three times its width and that extends along the direction of relative valve motion. In a first position, the metering chambers are connected in series with a source of the sample liquid to be analyzed; and in a second valve assembly position, the first metering chamber is connected in series between a source of auxiliary fluid and a first analysis unit and the second metering chamber is concurrently connected in series between a source of auxiliary fluid and a second analysis unit.
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Bemis William G.
Uccello John S.
Fisher Scientific Company
Kummert Lynn M.
Warden Robert J.
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