Key features/benefits
Description
The FLUCON Series FC703/704 Electro-Pneumatic Positioners
are used as final controlling element for operation of pneumatic
Rotary/linear valve actuators in correspondence with an input
signal of 4-20 mA DC or split ranges. The Positioners are based
on a force balance design for control application that requires a
high degree of reliability and repeatability at an economical
cost. The Positioners can handle the supply pressure up to 100
psig for higher pressure industrial pneumatic and process
control system requirements.
Application
The Flucon 703/704FC Positioners converts pneumatic/electrical signal to a pneumatic output which can be used to operate the following:
Valve, Valve-Actuators
Damper and Louver Actuators
Air-Cylinders
Relays
Clutches
Web Tensioners and Brake
Principle of Operation
The operation of FLUCON 703/704 FC Series E/P Positioners are based on a force balanced system. Tension on the feedback spring provides feedback to the positioner which will vary as the actuator shaft rotates with cam. The spring loading force is applied through the cam shaft S cam to the positioner’s instrument signal capsule through the balance beam.
Input of 4~20mA DC is applied to the instrument and corresponding output is applied to the control capsule serving as force balance membrane and matching the actuator shaft position to the instrument signal.
