Sensor element for a potentiometric sensor and production method
AssigneeEndress+Hauser Conducta GmbH+Co. KG
InventorMatthäus Speck
Life of this patent
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Abstract
The present disclosure relates to a sensor element for a potentiometric sensor, including a substrate and an ion-selective enamel layer arranged on the substrate. The substrate has at least one region which is electroconductively connected to the ion-selective enamel layer. The region of the substrate, which is electroconductively connected to the sensor layer, is made of a copper-based alloy having a mass fraction of at least 60% of copper.
Claims7
A sensor element for a potentiometric sensor, comprising:
- a substrate, and
- an ion-selective enamel layer arranged on the substrate, wherein the substrate has at least one region electrically conductively connected to the ion-selective enamel layer via a transition zone,
- such that the at least one region of the substrate electrically conductively connected to the ion-selective enamel layer is made of a copper-based alloy with a mass fraction of at least 60% copper,
- wherein the transition zone has a layer comprising copper (I) oxide with a thickness of less than 5 μm.
The sensor element of 1, wherein the ion-selective enamel layer is configured as a single- or multi-layer coating applied to the layer comprising copper (I) oxide arranged on a surface of the at least one region consisting of the copper-based alloy.
A potentiometric sensor comprising:
- a sensor element comprising:
- a substrate, and
- an ion-selective enamel layer arranged on the substrate, wherein the substrate has at least one region electrically conductively connected to the ion-selective enamel layer via a transition zone,
- such that the at least one region of the substrate electrically conductively connected to the ion-selective enamel layer is made of a copper-based alloy with a mass fraction of at least 60% copper, wherein the transition zone has a layer comprising copper (I) oxide with a thickness of less than 5 μm,
- a reference electrode, and
- a sensor circuit electrically conductively connected to the sensor element and the reference electrode, wherein the sensor circuit is configured to detect a potential difference between the sensor element and the reference electrode.
Dependencies are inferred from the claim text.