Automatable measuring, cleaning and calibration device for pH-electrodes or electrodes for measuring redox potentials

US6926814B2 · kind B2 · utility

Assignee

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

Inventors

• Ralf Koenemann · Stuttgart, DE
• Bernhard Beck · Rheinfelden (Baden), DE
• Detlev Wittmer · Maulbronn, DE

Key dates

• Filing date: Apr 3, 2002
• Grant date: Aug 9, 2005
• Expiry date: Sep 1, 2022

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/38
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An automatable measuring, cleaning and calibrating device for pH-electrodes or electrodes for measuring redox potentials, specifically in process engineering, having an electrode armature which keeps the measuring electrode in an operating position or in a maintenance position, whereby the electrode is retained in the maintenance position in a rinsing chamber in which a cleaning and calibration procedure can be performed. The device has a pump device to supply cleaning fluid and calibration solutions to the rinsing chamber over a delivery line connecting the pump device and the rinsing chamber. In order to configure the device more compactly, the pump device includes several feeds on its intake side, and a device is furnished to selectively activate a particular feed, and the media (cleaning fluid, calibration solution, etc.) brought selectively over the particular feeds to the pump device reach the rinsing chamber over the common delivery line.