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Fisher 3570 Pneumatic Valve Positioner

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Klaus Bergmann
Area Account Manager East & West
Phone. 2112 3345

Peder Hvidberg
Area Account Manager West
Phone. 2178 5053

Fisher™ 3570 pneumatic valve positioners are used with control valve assemblies to provide an accurate valve stem position that is proportional to the input signal received from a control device. These positioners are normally used with pneumatic piston actuators. However, product types within the 3570 family can be used with pneumatic, long-stroke, cylinder, or pneumatic diaphragm actuators.

Fisher

Instruction manual Fisher 3570 Pneumatic valve positioners

Specifikationer
Funktioner

Area Classification	ATEX Group II Category 2 Gas and Dust, CUTR for Groups II/III Category 2 Equipment
Certifications	ATEX, CUTR, PED
Communication Protocol	3-15 or 6-30 psi, 0.2 -1.0 or 0.4 -2.0 bar Pneumatic Signal
Diagnostics	No
Input Signal	Pneumatic
Max Outlet Pressure	150 psi
Mounting Type	Actuator Mounted
Operating Temperature	Standard Temperature, High Temperature
Position Control	Modulating
Safety Certification	NIL
Supply Media	Air, Natural Gas

Actuator with or without positioners and snubbers is available in an assortment of sizes, stroking speeds, thrusts, and travels to handle most control requirements.
Yokeless construction permits a low-profile assembly by allowing close coupling to the control device; either through a bracket or, with some versions, by direct mounting on a bonnet flange.
The cylinder (and 3570 positioner if used) can operate with supply pressures as low as 2.4 bar (35 psig) or as high as 10.3 bar (150 psig).
Actuators have maximum rated travels of up to 206 mm (8.125 inches).
Positioner/actuator action is easily reversed in the field with no additional parts. Positioner sensitivity, travel span, and travel starting point are factory set and need to be reset only if operating conditions have changed or if the positioner has been reversed.

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Fisher 3570 Pneumatic Valve Positioner

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