Sensor element for a potentiometric sensor and respective manufacturing method
AssigneeEndress+Hauser Conducta GmbH+Co. KG
InventorsThomas Wilhelm, Matthäus Speck, Michael Hanko
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Abstract
The present disclosure relates to a sensor element for a potentiometric sensor, comprising a substrate formed from a metal alloy and an ion-selective enamel layer arranged on the substrate, wherein the metal alloy comprises at least one transition metal and wherein the ion-selective enamel layer contains a proportion of an oxide of the transition metal, and wherein an electrically conductive transition zone is arranged between the substrate and the enamel layer and contains the transition metal in a plurality of different oxidation states.
Claims18
A sensor element for a potentiometric sensor, the sensor element comprising:
- a substrate formed from a metal alloy, wherein the metal alloy comprises at least one transition metal, and wherein the substrate comprises at least one layer of the metal alloy disposed on a metallic or ceramic base body, wherein the at least one layer consists essentially of the metal alloy;
- an ion-selective enamel layer disposed on the substrate, wherein the enamel layer includes a proportion of at least one oxide of the transition metal;
- and
- an electrically conductive transition zone disposed between the substrate and the enamel layer, the transition zone comprising the transition metal in a plurality of different oxidation states.
A method for manufacturing a sensor element for a potentiometric sensor, the method comprising:
- applying an ion-selective enamel layer to a substrate, wherein the substrate is formed from a metal alloy comprising a transition metal, and wherein the enamel layer includes a proportion of an oxide of the transition metal,
- wherein the enamel layer is applied to the substrate such that an electrically conductive transition zone forms between the substrate and the enamel layer during application of the enamel layer and includes the transition metal in different oxidation states.
Dependencies are inferred from the claim text.