Positioner for a fluid actuator

Details Positioner for a fluid actuator Positioner for a fluid actuator

2006-01-23

2008-09-09

Leslie, Michael (Department: 3745)

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

C091S361000

Reexamination Certificate

active

07421938

ABSTRACT:
A positioner for a fluid actuator comprising an electronics assembly designed for setpoint/actual value comparison and for outputting a feedback control signal includes a current/pressure transducer receiving the feedback control signal for controlling the actuator, an analog power supply, particularly in a range 4 to 20 mA, for powering the electronics assembly, and an additional voltage input, particularly in a range of up to 24 V, wherein said voltage input is configured as a further power supply for powering the current/pressure transducer separate from the analog power supply.

REFERENCES:
patent: 3225785 (1965-12-01), Goike
patent: 5934169 (1999-08-01), Regel
patent: 6512960 (2003-01-01), Schulz
patent: 41 23 147 (1995-04-01), None
patent: 44 29 401 (1996-02-01), None

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