Potentiometric sensor and method for the start-up of a potentiometric sensor

US9217724B2 · kind B2 · utility

Assignee

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

Inventors

• Thilo Trapp · Affoltern am Albis, CH
• Torsten Pechstein · Radebeul, DE

Key dates

• Filing date: Dec 13, 2011
• Grant date: Dec 22, 2015
• Expiry date: Jun 2, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/301
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A potentiometric sensor includes a housing, in which a reference half cell space and a separated, measuring half cell space are formed. The reference half cell space contains a reference electrolyte and at least one part of a first potential sensing electrode for sensing a reference potential, and the measuring half cell space is liquid-tightly sealed by a measuring membrane, and contains an inner electrolyte and at least one part of a second potential sensing electrode for sensing a measuring half cell potential. A passageway extends through a wall of the housing, and opens into the reference half cell space, and is sealed relative to a medium surrounding the housing. The potentiometric sensor has a way for producing through the passageway an electrolytic contact between the reference electrolyte and the medium surrounding the housing.