Patent ID: 11933756
Assignee: ENDRESS+HAUSER CONDUCTA GMBH+CO. KG
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 7:
8. A method of manufacturing an electrochemical probe, comprising:
producing a green probe body of an electrically insulating ceramic, the probe body having:
a first end and a second end;
an axis of symmetry extending from the first end to the second end;
at least two cavities disposed in an end face of the second end;
at least two through-holes extending through the probe body from the first end to the second end and communicating with a respective cavity at the second end; and
a cavity accessible from the first end of the probe body;

providing at least two connection elements embodied of an electrically conducting material, wherein each connection element is embodied to extend from the first end to the second end of the probe body through one of the at least two through-holes;
pressing each connection element into the probe body;
forming at least two electrodes, wherein each electrode is formed by deposition of a conductive metal into one of the at least two cavities, wherein each electrode makes electrical contact with a respective connection element, wherein each electrode is formed to fill a corresponding cavity, and wherein each electrode has an outer surface flush with the end face of the second end of the probe body;
sintering together the green probe body, the at least two electrodes, and the at least two connection elements to produce a sintered probe body, wherein the sintering produces a material bonding between the electrodes and the probe body making a gap-free material transition between each electrode and the probe body;
inserting a temperature sensor into the cavity of the sintered probe body; and
joining the temperature sensor to the sintered probe body in the cavity with a thermally conductive adhesive.