PMV Electropneumatic positioner ,with feedback unit

  • Model: EP5 + F5-MEC
  • Manufacturer: PMV (Westlock Controls / PMV)
  • Product Type: Electropneumatic Valve Positioner with Mechanical Feedback Unit

The EP5+F5-MEC is an electropneumatic valve positioner equipped with a mechanical feedback unit for accurate positioning of pneumatic control valves. The positioner converts an electrical control signal from a PLC, DCS, or controller into a proportional pneumatic output pressure that accurately positions the valve actuator.

The integrated F5-MEC feedback unit provides valve-position indication and limit-switch feedback for monitoring valve status.

The unit is suitable for both linear and rotary pneumatic actuators used in process industries such as oil & gas, chemical, power generation, water treatment, pharmaceutical, and general industrial automation.

Mechanical Specifications

  • F5-MEC Mechanical Feedback Unit:
  • Function

The F5-MEC provides independent valve-position feedback for monitoring and control systems.

  • Features
  • Mechanical position indication
  • Visual valve position display
  • Adjustable limit switches
  • Open/Closed signal feedback
  • Remote position monitoring capability
  • Rugged industrial construction
  • Suitable for quarter-turn and linear valve applications

Functional Features

  • Precise valve positioning
  • Electropneumatic signal conversion
  • Mechanical position feedback
  • Continuous modulation control
  • Easy calibration
  • Field-adjustable zero and span
  • Low air consumption
  • Fast response characteristics
  • Simple installation and maintenance
  • Compatible with most control valves

Rotary Actuators

  • Rack & pinion actuators
  • Scotch-yoke actuators
  • Quarter-turn valve actuators

Linear Actuators

  • Globe valve actuators
  • Diaphragm actuators
  • Linear piston actuators

Valve Compatibility

  • Ball valves
  • Butterfly valves
  • Globe valves
  • Plug valves
  • Control valves
  • Process regulating valves
  • Typical Applications
  • Oil & Gas Plants
  • Chemical Processing Plants
  • Refineries
  • Water Treatment Facilities
  • Power Generation Plants
  • Pharmaceutical Industries
  • Food & Beverage Processing
  • Petrochemical Facilities

Maintenance Requirements

  • Periodic inspection of pneumatic connections.
  • Verify calibration at regular intervals.
  • Inspect feedback cams and switches.
  • Ensure clean instrument air supply.
  • Check for air leakage.
  • Verify switch operation and indication.
  • Recalibrate after major maintenance activities.

Specifications

Model EP5 + F5-MEC
Product Type Electropneumatic Positioner with Mechanical Feedback
Input Signal 4-20 mA DC
Supply Air 1.4 to 7 bar
Output Proportional Pneumatic Pressure
Accuracy ±1% of Span
Repeatability ±0.5%
Protection Class IP65 / NEMA 4X
Housing Material Die-Cast Aluminum
Feedback Type Mechanical Feedback Unit
Limit Switches 2 × SPDT
Actuator Type Linear / Rotary
Valve Type Ball, Butterfly, Globe, Plug
Operating Temperature -40°C to +85°C
Application Pneumatic Control Valve Positioning and Feedback
Signal Conversion Electrical to Pneumatic
Mounting Direct or Bracket Mounted
Actuator Compatibility Linear and Rotary Actuators
Control Function Modulating Valve Control
Input Resistance Approximately 250 Ω
Signal Type Analog Current Signal
Supply Loop Powered
Polarity Protection Yes
Electrical Connection Terminal Block
Cable Entry M20 × 1.5 or 1/2" NPT (depending on version)
Supply Air Pressure 1.4 to 7 bar
Output Signal Proportional Pneumatic Pressure
Output Capacity High Flow Pneumatic Output
Air Consumption Low Steady-State Consumption
Air Quality Requirement Clean, Dry, Oil-Free Instrument Air
Air connection 1/4" NPT or G1/4
Pneumatic Medium Instrument Air
Positioning Accuracy ±1% of Span
Linearity Better than ±1%
Hysteresis Less than 1%
Sensitivity Better than 0.2%
Dead Band Adjustable
Response Time Fast Dynamic Response
Stroke Adjustment Fully Adjustable
Zero Adjustment Adjustable
Span Adjustment Adjustable
External Coating Epoxy Powder Coating
Fasteners Stainless Steel
Shaft Material Stainless Steel
Mounting Orientation Any
Weight Approximately 2 to 4 kg (depending on configuration)
Switch Type SPDT Mechanical Limit Switch
Number of Switches 2
Position Indication Open / Closed
Contact Rating Industrial Duty Contacts
Adjustment Independently Adjustable
Switching Accuracy High-Precision Cam Operation
Ambient Temperature -40°C to +85°C
Relative Humidity Up to 95% Non-Condensing
Vibration Resistance Industrial Duty
Corrosion Resistance Suitable for Industrial Environments
Weather Protection IP65 / NEMA 4X
Instrument Air Clean, dry, filtered
Air Filter Recommended
Air Regulator Recommended
Electrical Signal 4-20 mA DC
Mounting Bracket According to actuator type
Grounding Required
More in Positioner

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