Fisher 3582i Electropneumatic Valve Positioner 582i Positioner
4 to 20 mA dc constant current with 30 Vdc
0.3 bar (5 psi) above actuator requirement
Max Input Bellows Pressure 2.4 bar
Fisher 3582 pneumatic, single-acting positioner is used with diaphragm-actuated, sliding-stem control valve assemblies. The pneumatic valve positioner receives a pneumatic input signal from a control device and modulates the supply pressure to the control valve actuator, providing an accurate valve stem position that is proportional to the pneumatic input signal.
The Type 3582i electro-pneumatic valve positioner consists of a Type 582i electro-pneumatic converter installed on a Type 3582 pneumatic valve positioner.The Type 3582i provides an accurate valve stem position that is proportional to a dc current input ignal.
The Type 582i electro-pneumatic converter, shown in figure 5, is a modular unit that can be installed at the factory or in the field (2). The converter receives a dccurrent input signal and provides a proportional pneumatic output signal through a nozzle/flapper arrangement. The pneumatic output signal provides the input signal to the pneumatic positioner,eliminating the need for a remote mounted transducer.
Input Signal of Fisher 3582i Electropneumatic Valve Positioner 582i Positioner
For Type 3582i Only:4 to 20 mA dc constant current with 30 Vdc
maximum compliance voltage, can be split range
For Type 3582i Only:120 ohms shunted by three 5.6-volt zener diodes
Output Signal of Fisher 3582i Electropneumatic Valve Positioner 582i Positioner
Type: Pneumatic pressure as required by actuator up to 95 percent of maximum supply Action : Field-reversible between direct and reverse within the pneumatic valve positioner
Supply Pressure of Fisher 3582i Electropneumatic Valve Positioner 582i Positioner
Recommended: 0.3 bar (5 psi) above actuator requirement
Maximum: 3.4 bar (50 psig) or pressure rating of actuator, whichever is lower
Maximum Input Bellows Pressure Rating
2.4 bar (35 psig)
Maximum Steady-State Air Consumption of Fisher 3582i Electropneumatic Valve Positioner 582i Positioner
For Type 3582i Only
1.4 bar (20 psig) Supply: 0.42 normal m3/hr (17.2scfh)
2.0 bar (30 psig) Supply: 0.53 normal m3/hr (21scfh)
2.4 bar (35 psig) Supply: 0.59 normal m3/hr (24scfh)
1/4-inch NPT female
For Type 3582i only:
1/2-14 NPT conduit connection
Maximum Valve Stem Travel
105 mm (4-1/8 inches); adjustable to obtain lesser travel with standard input signal
See characterized cams section
3582 Series Units: 2.5 kg (5-1/2 pounds)
Type 3582i: 3.6 kg (8 pounds)
Features of Fisher 3582i Electropneumatic Valve Positioner 582i Positioner
• The range of the adjustable zero and span permits the use of all standard input signals including split ranges.
• Because units from one positioner family can be used in a variety of control applications, basic spare parts inventory requirements are simplified and fewer spare parts are needed to support a plant-wide positioner applications base.
• With the cover removed, zero and span adjustments are easily accessible and can be made with a screw driver and spanner.
• Changes in supply pressure and valve load have minimal effect on positioner operation.
• Case, components, and gasket materials withstand harsh environments. Positioner bleed air purges internal parts for additional protection.
• Simple adjustments permit switching between direct and reverse action.
• To support diagnostic testing of valve/actuator/positioner packages with the FlowScanner™ valve diagnostic system, connectors, piping, and other hardware can be installed between the positioner and the actuator.
Specification of Fisher 3582i Electropneumatic Valve Positioner 582i Positioner
Explosion Proof, Intrinsically Safe, Non-incendive, Dust
CSA, FM, ATEX, IECEx, CUTR, Peso, KGS, INMETRO, NEPSI, RCM
Standard Temperature, High Temperature
Flow, Pressure, Temperature, Level
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