Electricity: measuring and testing – Electrolyte properties – Using a conductivity determining device
Patent
1992-11-17
1994-02-15
Wieder, Kenneth A.
Electricity: measuring and testing
Electrolyte properties
Using a conductivity determining device
324450, 324447, 422110, 204229, 204225, 204238, G01N 3318
Patent
active
052870600
ABSTRACT:
A conductivity sensor adapted for use in the conductimetric analysis of liquids includes a pair of conductivity electrodes incorporated into a conductivity cell assembly having a liquid flow control chamber, sensing chamber, and liquid exit chamber. Liquids to be measured are pumped into the liquid flow control chamber, where any turbulence in the liquid is dampened. The non-turbulent liquid is passed from the liquid flow control chamber to the sensing chamber, where the conductivity of the liquid is determined. The sensing chamber is adapted for changing the height of a column of liquid between the pair of conductivity electrodes in order to vary the cell constant of the sensor. The non-turbulent liquid is passed from the sensing chamber to the liquid exit chamber, where it exits the sensor. The sensor is well-suited for use in measuring conductivities of plating bath solutions and monitoring concentrations of major constituents of plating bath solutions.
REFERENCES:
patent: 4087743 (1978-05-01), Bressan
patent: 4803869 (1989-02-01), Barcelona
patent: 4871427 (1989-10-01), Kolesar
patent: 4988948 (1991-01-01), Francard
Eliash Bruce M.
Ludwig Frank A.
Phan Nguyet H.
Reddy Vilambi N.
Denson-Low W. K.
Hughes Aircraft Company
Lachman M. E.
Sales M. W.
Solis Jose M.
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