Positioner for a valve that can be actuated by a drive

US6695282B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wolfgang Clemens · Puschendorf, DE
• Klaus-Dieter Fiebelkorn · Niederlauterbach, FR
• Gerhard Klebert · Bad Herrenalb, DE
• Klaus Ludwig · Erlangen, DE
• Andre-Heinrich Meinhof · Rheinstetten, DE
• Holger Schmaedicke · Landau, DE

Key dates

• Filing date: Oct 4, 2002
• Grant date: Feb 24, 2004
• Expiry date: Oct 4, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/8242
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A positioner for a valve that is actuated by means of a drive. The positioner includes a locator (9) and a control unit (13). The locator (9) detects the actual position of an actuator (7). The control unit (13) compares the actual position with a predefined desired position, and generates an actuating signal. A magnet (18) having a magnetoresistive sensor, preferably a GMR sensor, is provided as the locator. The locator (9) is less susceptible to dirt and less prone to wear and tear than a conventional slide potentiometer. The positioner is thus less fault-prone.