In-tank conductivity sensor

Electricity: measuring and testing – Electrolyte properties – Using a conductivity determining device

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Details

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

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