Electropneumatic Ex d positioner with FOUNDATION™ fieldbus communication



  • Challenging transit times
  • Challenging ambient conditions
  • Throttling service


  • Linear actuator, single acting
  • Linear actuator, double acting
  • Rotary actuator, single acting
  • Rotary actuator, double acting


  • Without certification
  • Type of protection "Flameproof enclosure"


  • FOUNDATION™ fieldbus


  • Fieldbus


  • With


  • With

Special features

  • Electropneumatic Ex d positioner with FOUNDATION™ fieldbus communication
  • Die-cast aluminum or stainless steel housing
  • Attachment to linear actuators according to IEC 60534-6 or SAMSON integral attachment
  • Attachment to rotary actuators according to VDI/VDE 3845
  • Attachment to double-acting actuators with Type 3710 Reversing Amplifier
  • Integrated EXPERTplus diagnostics for control valves
  • Integrated function blocks: 1 PID Control (PID), 1 Analog Output (AO), 1 binary input for DC voltage signals (DI1) or for connection of a floating contact (DI2)
  • 2 DI function blocks to analyze binary input signals
  • Any desired mounting position of the positioner (but not suspended)
  • Simple one-knob, menu-driven operation also in hazardous areas
  • Easy-to-read display in any mounting position thanks to rotatable reading direction
  • Configurable with a computer over the SSP interface using the TROVIS-VIEW software
  • Variable automatic start-up thanks to four different initialization modes
  • Preset parameters, only values deviating from the standard need to be adjusted
  • Calibrated travel sensor without gears susceptible to wear
  • Sub (substitution) initialization mode allows the positioner to be started up in case of emergency whilst the plant is running without having to change the valve position.
  • All parameters saved in non-volatile EEPROM
  • Two-wire system with small electrical load between 300 and 350 Ω at 20 mA
  • Adjustable output pressure limitation
  • Adjustable tight-closing function
  • Automatic zero monitoring
  • Integrated temperature sensor and operating hours counter
  • Self-diagnostics
  • Messages as condensed state conforming to NAMUR Recommendation NE 107, issued over a fault alarm contact or optional analog position transmitter



  • Device compatible with paint
  • Additional equipment: binary input, forced venting function


  • WA 335

    Special Print: Digitalization of Industrial Control Valves
  • WA 333

    Special Print: Safety in the Process Industry
  • WA 166

    Flyer: Completely integrated
    Series 3730 and 3731 Positioners
  • WA NA 122

    : Type 3730 & 3731 Series Positioner
  • WA 310

    Brochure: Positioners
    Atachment, Options, Explosion Protection, Operation, Diagnostics, Safety
  • WA 353

    Sonderdruck: Wunschdenken oder Wirklichkeit?
  • WA 283

    Sonderdruck: Anbau von Stellungsreglern an pneumatische Antriebe
    Eine vergleichende Bewertung aus Herstellersicht
  • WA 258

    Sonderdruck: Integrationsservice weltweit
    Intelligente Aktorik ist wichtige Komponente der Leittechnik
  • WA 252

    Sonderdruck: Neue Asset-Management-Konzepte bei Stellventilen
    Diagnose von intelligenten Stellgeräten
    Dr.-Ing. Jörg Kiesbauer, Dipl.-Ing. Stefan Erben, Dipl.-Phys. Dirk Hoffmann
  • AB 08

    Filter Check Valve
    Integrated into a screw-on body with G ¼ thread, degree of protection IP 56/66 or NEMA 4
  • AB 07

    Vent Plugs
  • AB 03

    Pressure Gauges with Pressure Compensation Element
  • T 8387-5

    Type 3731-5 Electropneumatic Ex d Positioner
    with FOUNDATION fieldbus communication
  • T 8388

    EXPERT/EXPERT+ Valve Diagnostics
    Valid up to firmware version 1.49
  • T 8350

    Information Sheet of Valve Accessories
    Positioners · Limit Switches · Solenoid Valves · Valve Accessories
    Selection and Application
  • T 6661

    TROVIS-VIEW software
    TROVIS 6661


  • EB 8387-5

    Type 3731-5 Electropneumatic Ex d Positioner
    With FOUNDATION fieldbus communication
    Firmware version 1.6x
  • EB 8388-5

    Electropneumatic Positioner Type 373x-5
    with FOUNDATION fieldbus communication
    Valid up to firmware version 1.49
  • EB 8389

    EXPERTplus Valve Diagnostics
    Types 3730-2, 3730-3, 3730-4 and 3730-5 as well as Types 3731-3 and 3731-5 Electropneumatic Positioners
    Firmware version 1.5x and 1.6x
  • EB 6661

    TROVIS-VIEW 4 Software
    TROVIS 6661
  • KH 8387-5

    Type 3731-5 Electropneumatic Ex d Positioner
    Communication: FOUNDATION™ fieldbus
    Firmware version 1.6x
  • SH 8387-5

    Type 3731-5 Electropneumatic Positioner
    Communication: FOUNDATION™ fieldbus

DXF file from data sheet


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