Potentiometric sensor

US11125714B2 · kind B2 · utility

Assignee

• Endress+Hauser Conducta GmbH+Co. KG · DE

Inventors

• Stefan Wilke · Seeburg, DE
• Jens Vettermann · Großweitzschen, DE
• Jens Voigtländer · Waldkirch, DE
• Magdalena Losik · Dresden, DE
• Michael Hanko · Dresden, DE

Key dates

• Filing date: Jan 27, 2016
• Grant date: Sep 21, 2021
• Expiry date: Apr 27, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/333
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A potentiometric sensor having a measuring half cell with a conductor element, a reference half cell with a reference element, a measuring circuit connected with the conductor element of the measuring half cell and the reference element of the reference half cell and designed to create a measuring signal that is dependent on a potential difference between the conductor element and the reference element. The measuring half cell further includes a housing having a housing chamber closed off by a first ion-selective membrane and contacted by the conductor element, a first inner electrolyte contained within the housing chamber and contacting the ion-selective membrane. The conductor element includes an inner conductor, especially an inner conductor comprising a metallic conductor, connected with the measuring circuit and a gas-tight barrier separating the inner conductor from the first inner electrolyte.