Analyzer system

Details Analyzer system Analyzer system

1991-07-09

1993-10-19

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

Analyzer supplier

7386373, 204409, G01N 2127

Patent

active

052535398

ABSTRACT:
An electrochemical analysis system includes a plurality of flow through analysis chambers and a valve connected in series between the outlet port of one analysis chamber and the inlet port of a second analysis chamber and has a first position connecting the two analysis chambers in series for flow of a sample to be analyzed therethrough and a second position in which the two analysis chambers are connected to separate sources of calibrating fluids. The valve includes a housing member with a recess in which a valve spool member is disposed. The spool member includes an array of ports in its cylindrical surface, two ports being interconnected by a through passage, and other ports being separately connected to individual sources of calibrating fluids. The valve spool is centered in the housing recess by a sleeve member that carries an annular seal member that has a continuous annular seal surface in sealing engagement with the cylindrical surface of the valve spool member and through passages that are in fixed alignment with the ports of the housing member.

REFERENCES:
patent: 2856150 (1958-10-01), McDonald
patent: 4222412 (1980-09-01), Carle
patent: 4298026 (1981-11-01), Ambers
patent: 4361539 (1982-11-01), Weinberg
patent: 4535522 (1985-08-01), Averill
patent: 4909933 (1990-03-01), Carter et al.
patent: 5154396 (1992-10-01), Conley et al.

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