Positioner for a valve that can be actuated by a drive
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United States of America Patent
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-
Feb 24, 2004
Grant Date -
Jul 24, 2003
app pub date -
Oct 4, 2002
filing date -
Apr 4, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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Cited Art Landscape
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