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Fisher 3720 Electro-Pneumatic Positioner

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Taneli Luhanko
Inside Sales Engineer
Phone. 0207 416 202
Mob. 040 757 4208

Fisher™ 3720 electro-pneumatic positioners are designed for use with either diaphragm or piston rotary actuators. These positioners provide a valve ball or disk position for a specific input signal. The 3720 is created by the addition of a Fisher 3722 electro-pneumatic converter to the 3710 positioner. The positioner provides a valve position in response to a DC current input signal and can easily be configured as single- or double-acting for rotary actuators.

Fisher

Instruction manual Fisher 3710 and 3720 Valve positioners and 3722 Electro-pneumatic converter

Tekniset tiedot
Ominaisuudet

Area Classification	Explosion Proof, Intrinsically Safe, Non-incendive, Dust
Certifications	CSA, FM, ATEX, IECEx, CUTR, Peso, KGS, INMETRO, NEPSI, RCM
Communication Protocol	4-20mA Analog
Data Interface	Wired
Diagnostics	No
Input Signal	Electric
Max Outlet Pressure	150 psi
Mounting Type	Actuator Mounted
Operating Temperature	Standard Temperature, High Temperature
Position Control	Modulating
Process Control	Flow, Pressure, Temperature, Level
Safety Certification	NIL
Supply Media	Air

3720 positioners use field-proven spool valve technology for a simple design that gives accurate, fast-responding operation with high cycle life.
Case, components, and gasket materials withstand harsh environments.
With EPDM O-rings and input module diaphragm, 3720 positioners can be used in low temperature applications.
Can be used in applications with special material requirements, as in the food and beverage industry, pharmaceuticals, and tobacco processing.
With the cover removed, all internal components are easily accessed.
Changes in supply pressure and ambient temperature have minimal effect on positioner operation.
To support diagnostic testing of valve/actuator/positioner packages, connectors, piping, and other hardware can be installed between the positioner and the actuator.
Standard, low-profile indicator or optional beacon-style indicator mount easily to the positioner cover.

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Fisher 3720 Electro-Pneumatic Positioner

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