Electrochemical measuring cell having a compensating membrane

Details Electrochemical measuring cell having a compensating membrane Electrochemical measuring cell having a compensating membrane

1989-06-21

1990-03-27

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204415, G01N 2730

Patent

active

049118196

ABSTRACT:
The invention is directed to a measuring cell for detecting a component of a measuring sample. The measuring cell includes a housing in which an electrolyte as well as a measuring electrode and a counter electrode are accommodated. A membrane separates the electrolyte from the measuring sample and is pressed by a supporting part against the measuring surface of the measuring electrode. This membrane is improved such that it can compensate for volumetric changes in the electrolyte chamber in the clamped condition. The measuring cell is further improved in that a small amount of readiness energy is required for the operational-ready condition and the attachment of the membrane is not critical for its later function. A first portion of this membrane is pressed against the measuring electrode. In the region outside of this first portion and extending up to the peripheral edge where it is attached, a compensating membrane portion is formed which can change in its configuration.

REFERENCES:
patent: 3655546 (1972-04-01), Marovich et al.
patent: 4126531 (1978-11-01), Porter et al.

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