Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1993-04-05
1994-01-25
Niebling, John
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204412, 204431, 204432, G01N 2726
Patent
active
052813240
ABSTRACT:
The invention is directed to a measuring sensor for detecting gaseous components which operates in the diffusion limit current region. The measuring sensor includes a support body and has an electrolyte chamber partitioned by a diffusion membrane from the ambient containing the gaseous components. The measuring electrode of the measuring sensor is improved so that a simpler manipulation for covering the electrolyte chamber with a membrane is possible without endangering the mechanical stability of the membrane. During operation, the detection operation is intended to take place completely at that electrode surface which is in direct electrochemical exchange communication with the electrolyte supply. For this purpose, the coating is configured as an adherent layer to the support body so that it forms an impermeable adherence region in the lateral direction between coating and support body. A process for producing the measuring electrode is characterized in that the coating is adheringly applied to a front face of the support body which forms a closed surface. Thereafter, a membrane layer is applied to the coating and a break through for communicating with the electrolyte chamber is formed in the support body by removing a portion of the support body starting from a rear face thereof lying opposite the front face. The break through is formed by removing the portion of the support body through to the coating. In the completed measuring sensor, this permits the electrolyte from the electrolyte chamber to penetrate through the break through to the coating.
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"Rompps Chemie-Lexikon" by Dr. Otto-Albrecht Neumuller, 7th Edition, 1974, p. 2515.
Kiesele Herbert
Sohege Jurgen
Bell Bruce F.
Dragerwerk Aktiengesellschaft
Niebling John
Ottesen Walter
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