Circuit arrangement for an electro-chemical measuring device

Details Circuit arrangement for an electro-chemical measuring device Circuit arrangement for an electro-chemical measuring device

1979-08-06

1982-03-02

Tokar, Michael J.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Erosion

324443, 324450, G01N 2700

Patent

active

043180418

ABSTRACT:
A measuring circuit for use with an active polarized electrode, a reference electrode and a diaphragm which separates the solution to be examined from the electrolyte in which the electrodes are immersed. The output signals from the polarized electrode and from the reference electrode are processed as follows. The respective electrode is connected to one of the inputs of a respective operational amplifier (OA1, OA2) which serve as current voltage converters. The outputs of these amplifiers are then connected to a third operational amplifier (OA3) which detects the prevailing current difference in the electrode currents and initiates a necessary correction.

REFERENCES:
patent: 3441490 (1969-04-01), Johansson
patent: 3722276 (1973-03-01), Chandler
patent: 3742348 (1973-06-01), Golibersuch
patent: 3852666 (1974-12-01), Galwiler
patent: 4228400 (1980-10-01), Bruckenstein

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