Electrochemical measuring sensor

Details Electrochemical measuring sensor Electrochemical measuring sensor

1993-09-15

1995-07-25

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204424, 204427, G01N 27409

Patent

active

054359015

ABSTRACT:
An electrochemical measuring sensor is proposed for determining the oxygen content in exhaust gases which has a base body made of an ion-conducting solid electrolyte in the form of a tube closed at one end, an inner electrode, an outer electrode disposed on the external surface of the probe block and having a conductor track on the connection side which has a covering layer, a ceramic protective layer and a metallic sealing ring for sealing the reference space from the exhaust gas space and for making an electrical contact to the housing in which the measuring sensor is to be inserted. The electrochemical covering layer covering the conductor track is brought down on the reference side of the probe block to below the metallic sealing ring and the track is formed with uncovered lateral extensions making electrical contact with the ring. This makes it possible to significantly prolong the service life of the measuring sensor.

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