TROVIS SAFE 3731-3 | Elektropneumatischer Ex-d-Stellungsregler mit HART®-Kommunikation


Electropneumatic Ex d positioner with HART® 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"


  • HART®


  • 4 to 20 mA


  • With


  • With

Special features

  • Electropneumatic Ex d positioner with HART® 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
  • 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: position transmitter, binary input, forced venting function, binary output


  • WA 353

    Sonderdruck: Wunschdenken oder Wirklichkeit?
  • WA 333

    Special Print: Safety in the Process Industry
  • WA 284

    Special Print: Control Valve Diagnostics in Safety-instrumented Systems
    A Comparison of Architectures
  • 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
  • WA 335

    Special Print: Digitalization of Industrial Control Valves
  • WA 166

    Flyer: Completely integrated
    Series 3730 and 3731 Positioners
  • WA 300

    Flyer: WirelessHART
    Positioners in a WirelessHART® network
  • WA 310

    Brochure: Positioners
    Atachment, Options, Explosion Protection, Operation, Diagnostics, Safety
  • WA NA 122

    : Type 3730 & 3731 Series Positioner
  • AB 03

    Pressure Gauges with Pressure Compensation Element
  • AB 07

    Vent Plugs
  • AB 08

    Filter Check Valve
    Integrated into a screw-on body with G ¼ thread, degree of protection IP 56/66 or NEMA 4
  • T 8387-3

    Type 3731-3 Electropneumatic Ex d Positioner
    with HART® communication
  • T 8389

    Types 3730-2, 3730-3, 3730-4, 3730-5 and Type 3731-3
    Electropneumatic Positioners
    EXPERTplus Valve Diagnostics
    Valid for firmware version 1.51 and higher
  • 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 8387-3

    Type 3731-3 Electropneumatic Ex d Positioner
    with HART® communication
    Firmware version 1.6x
  • EB 8387-3

    Type 3731-3 Electropneumatic Ex d Positioner
    with HART® communication
    Firmware version 1.4x
  • EB 8387-3

    Type 3731-3 Electropneumatic Ex d Positioner
    with HART® communication
    Firmware version 1.3x
  • EB 8387-3

    Type 3731-3 Electropneumatic Ex d Positioner
    with HART® communication
    Firmware version 1.5x
  • 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 8384-3

    Types 3730-3, 3730-6 and 3731-3 (Ex d) as well as TROVIS 3730-3 and TROVIS 3793 Electropneumatic Positioners
    HART® communication
  • SH 8387-3

    Type 3731-3 Electropneumatic Ex d Positioner
    Communication: HART®

DXF file from data sheet


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