Measuring transducer for determining a measured variable representing an activity of a target ion in a measured medium

US9091642B2 · kind B2 · utility

Assignee

• Endress+Hauser Conducta Gesellschaft fuer Mess- und Regeltechnik mbH + Co. KG · DE

Inventors

• Thomas Wilhelm · Zürich, CH
• Michael Hanko · Dresden, DE
• Stefan Wilke · Seeburg, DE

Key dates

• Filing date: Aug 3, 2012
• Grant date: Jul 28, 2015
• Expiry date: Jul 25, 2033

Classification

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

Abstract

A measuring transducer embodied to produce and output a measurement signal dependent on an activity of a target ion present in a measured medium, wherein the measuring transducer has, in a region provided for contact with the measured medium, at least one membrane conducting the target ion; wherein the measuring transducer has a first potential sensing element and a second potential sensing element, and wherein at least one section of the second potential sensing element is arranged in the interior of the membrane and the first potential sensing element is arranged in an inner electrolyte, which is separated from the measured medium by the membrane and is in contact with the membrane.