US 12,461,055 B2
Electrochemical sensor
Christian Fanselow, Geringswalde (DE); and Stefan Paul, Dobeln (DE)
Assigned to Endress+Hauser Conducta GmbH+Co. KG, Gerlingen (DE)
Filed by Endress+Hauser Conducta GmbH+Co. KG, Gerlingen (DE)
Filed on Feb. 16, 2024, as Appl. No. 18/443,966.
Application 18/443,966 is a continuation of application No. 17/658,422, filed on Apr. 7, 2022, granted, now 11,933,756.
Application 17/658,422 is a continuation of application No. 15/989,499, filed on May 25, 2018, abandoned.
Application 15/989,499 is a continuation of application No. 14/479,595, filed on Sep. 8, 2014, abandoned.
Claims priority of application No. 10 2013 110 042.2 (DE), filed on Sep. 12, 2013.
Prior Publication US 2024/0192159 A1, Jun. 13, 2024
Int. Cl. G01N 27/406 (2006.01); B32B 38/00 (2006.01); G01N 27/07 (2006.01); G01N 27/403 (2006.01); G01N 17/02 (2006.01); G01N 27/00 (2006.01); G01N 27/28 (2006.01)
CPC G01N 27/4062 (2013.01) [B32B 38/0036 (2013.01); G01N 27/07 (2013.01); G01N 27/403 (2013.01); B32B 2305/80 (2013.01); B32B 2457/00 (2013.01); G01N 17/02 (2013.01); G01N 27/00 (2013.01); G01N 27/283 (2013.01); G01N 2203/0429 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An electrochemical probe, comprising:
a probe body embodied 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;
at least two electrodes embodied of an electrically conducting material; and
at least two connection elements embodied of the 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, and each connection element is electrically connected with one of the at least two electrodes;
wherein the electrochemical probe is produced by:
producing a green probe body of the electrically insulating ceramic;
pressing each electrode, with its connected connection element, into the green probe body by pressing the electrode into one of the at least two cavities and pressing the connection element into the corresponding through-hole such that the connection element extends through the green probe body to the first end and an outer surface of the electrode is flush with the end face of the second end of the green probe body; and
sintering together the green probe body, the at least two electrodes, and the at least two connection elements, 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;
wherein the electrochemical probe further comprises: a temperature sensor that is inserted into the cavity accessible from the first end of the probe body and that is joined to the probe body with a thermally conductive adhesive.