Analytical device for automated determining of a measured variable of a measured liquid

US9086156B2 · kind B2 · utility

Assignee

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

Inventors

• Tobias Zachmann · Stuttgart, DE
• Ulrich Kathe · Leonberg, DE
• Thomas Schipolowski · Stuttgart, DE
• Ralf Bernhard · Stuttgart, DE
• Christian Hirn · Ditzingen, DE
• Ralf Steuerwald · Eberdingen, DE

Key dates

• Filing date: May 11, 2012
• Grant date: Jul 21, 2015
• Expiry date: May 4, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N35/1097
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An analytical device for automated determining of a measured variable of a measured liquid, including: a measuring cell; a measuring transducer; a control unit; a system of liquid lines; a first liquid container which is connected to the measuring cell via a first liquid path; a second liquid container, which is connected to the measuring cell via a second liquid path, liquid path can be blocked by means of at least a second valve; wherein a first pump is associated with the first liquid container; and wherein a second pump (different from the first pump) for transport of liquid along the second liquid path is associated with the second liquid container; and wherein the analytical device has a central valve switching mechanism, especially controllable by the control unit, for actuating the first valve and the second valve.