Positioners • Converters Limit Switches † Position ... Positioners and...Positioners •...

Positioners • Converters

Limit Switches • Position Transmitters

Solenoid Valves • Accessories

Selection and Application

Associated Data Sheets T 8355 EN ff. Edition January 2010

Information Sheet T 8350 EN

Positioners, converters, limit switches, position transmitters, so-lenoid valves and lock-up valves are transfer elements designedto adapt pneumatic control valves to the requirements of indus-trial plants.Supply pressure regulators and air reducing stations are used tosupply the pneumatic instruments with compressed air.Positioners ensure a predetermined assignment between thevalve position (controlled variable x) and control signal (refer-ence variable w). They compare the control signal issued bypneumatic or electric automation equipment (controller, controlstation, process control system) to the travel or opening angle ofthe control valve and supply a corresponding output signalpressure (output variable y) (pst). Positioners are often used asservo-booster as they convert low-energy signals into strongproportional signal pressures up to the maximum supply pres-sure (6 bar/90 psi). They can be used in standard andsplit-range operation.Depending on the input signal, a distinction is made betweenpneumatic (p/p) and electropneumatic (i/p) positioners. Pneu-matic positioners accept an input signal of 0.2 to 1 bar (3 to15 psi) and issue an output signal pressure (pst) of maximum6 bar (90 psi).Electropneumatic (i/p) positioners use an analog direct currentsignal of 4(0) to 20 mA or 1 to 5 mA as the input variable andissue an output signal pressure (pst) up to 6 bar (90 psi).The Type 3730-3 Positioner additionally uses HART® communi-cation between field devices and the process control system.The Type 3730-4 and Type 3731-4 Positioners with PROFIBUScommunication and Type 3730-5 and Type 3731-5 Positionerswith FOUNDATION™ fieldbus communication are used to inte-grate final control elements into fieldbus systems.Electropneumatic (i/p) converters convert a DC input signal(control signal) directly into a pneumatic control signal (outputsignal pressure pst).Limit switches consist of two inductive, electric or pneumaticcontacts. They issue a signal whenever an adjusted limit is ex-ceeded or not reached.Analog position transmitters assign a continuous 4 to 20 mAoutput signal to the valve travel. They signalize both end posi-tions of the valve "Valve OPEN" and "Valve CLOSED" as wellas intermediate valve positions.Solenoid valves convert binary signals issued by electric controlequipment into binary pneumatic control signals.Lock-up valves shut off the signal pressure line of a pneumaticactuator upon failure of supply air or when the supply air fallsbelow an adjusted value. As a result, the actuator is blocked.The control valve remains in its last position until the fault hasbeen eliminated.The pneumatic remote adjuster is a precision regulator that canbe adjusted precisely by hand.Air reducing stations and supply pressure regulators are used toprovide pneumatic measuring and control equipment with fil-tered supply air at a constant pressure.

2 T 8350 EN

10.2 to 1 bar

3

pst

Fig. 1 · Schematics of pneumatic control valves

Fig. 2 · Two control valves operated in parallel using acontrol signal y in split-range operation

Fig. 3 · Schematics of a pneumatic control valve

1.1With p/p positioner

1.2With i/p positioner

1.3With i/p converter

2.1Schematics

2.2Control signal versustravel diagram for twocontrol valves operatingin the same direction

2.3Control signal versustravel diagram for twocontrol valves operatingin opposing directions

Legend for Figs. 1 to 31 Pneumatic controller3 p/p positioner4 Continuous-action elec. controller5 i/p converter6 i/p positioner7 Limit switch

8 3/2-way solenoid valve9 Supply pressure regulator

10 Air supplyw Reference variablex Controlled variabley Output variable

3 T 8350 EN

Electropneumatic and pneumatic positionersElectropneumatic (i/p) Pneumatic (p/p)

For linear actuators acc. to IEC 60534-6-1,up to … mm 200 200 200 – 120 90 – – – 120 90

For Type 3277 (direct attachment) • • • • • • •

For linear actuator with rod-type yoke • • • • • • •

For Type 3278 Rotary Actuator • • • • • •

For rotary actuators acc. to VDI/VDE 3845 • • • • • •

Also with explosion protection EEx ia IIC T6 • • • • • • • • • •

Also intrinsically safe w. CSA/FM approval • • • • • •

Referencevariable

0.2...1 bar (3...15 psi) • • • •

4...20 mA • • • • • • •

0...20 mA • • •

1... 5 mA • •

Also split-range operation • • • • • • • • •

Also with limit switch • • • • • • •

Also with solenoid valve • • •

Also with position transmitter • • • •

Convertible to p/p or i/p positioner – • • • • • • • •

Type 3730-0 3730-1 3730-2* 3760 3767 4763 3761 3761 3760 3766 4765

Refer to Data Sheet T … EN for details T 8384-0 T 8384-1 T 8384-2 T 8385 T 8355 T 8359 T 8386 T 8386 T 8385 T 8355 T 8359

* Configuration and operation possible using TROVIS-VIEW software

Smart positionersFor linear actuators acc. to IEC 60534-6-1,up to … mm 200 200 200

For Type 3277 (direct attachment) • • •

For linear actuator with rod-type yoke • • •

For Type 3278 Rotary Actuator • • •

For rotary actuators acc. to VDI/VDE 3845 • • •

Also with explosion protection EEx ia IIC T6 • • •

Also intrinsically safe w. CSA/FM approval • • •

Referencevariable

4...20 mA •

Also split-range operation • • •

Communication HART® PROFIBUS FOUNDATION™ fieldbus

Also with limit switch • • •

Also with solenoid valve • • •

Also with position transmitter •

Type 3730-3* 3730-4* 3730-5*

Refer to Data Sheet for details T 8384-2/3 EN T 8384-4 EN T 8384-5 EN

Ex d version (see next table) Type 3731-3 – Type 3731-5

* Configuration and operation possible using TROVIS-VIEW software

4 T 8350 EN

Electropneumatic Ex d positionersFor linear actuators acc. toIEC 60534-6-1, up to … mm 200 200 200 120 90

For Type 3277 (direct attachment) • • • • • –For linear actuator with rod-type yoke • • • • •For Type 3278 Rotary Actuator • • • • •For rotary actuators acc. VDI/VDE 3845 • • • • •

Flameproof enclosure (EEx d) • •With Type 6116 i/p Converter • • • •

Type 3770 Field Barrier •

Referencevariable

4 … 20 mA • • • • • •Also split-range • • • • •

Communication HART® FFM™ (HART®)Also with limit switch • • •Also with solenoid valve • • •Type 3731-3 3731-5 3730/3770 3760/6116 3766/6116 4765/6116 3761/6116Refer to Data Sheet T … EN for details T 8387-3 T 8387-5 8384/8379 8385/6116 8355/6116 8359/6116 8386/6116

Approvals ATEX · FM · CSA · NEPSI ATEX ATEX · FM · CSA · GOST

Limit switches, position transmittersLimit switches for linear actuators • • • •Limit switches for rotary actuators • • •Position transmitter for linear actuators,4 … 20 mA, two-wire connection •

Alarm contacts Inductive • • •Electric • • • •Pneumatic •

Version Without protection • • • • •EEx ia IIC T6 • • • • •EEx de II T6 •

Type 4746 3776 3768 3738-20 4744 4748Refer to Data Sheet for details T 8365 EN T 8368 EN T 8356 EN T 8390 EN T 8367 EN T 8363 EN

Field barriers, solenoid valves, lock-up valves, supply pressure regulators, accessoriesField barrier Ex d/Ex i •Solenoid valve f. pneum. control valves • •Pilot valve Ex d/Ex em •Supply pressure regulator •Service unit model •Filter regulator •Pneumatic remote adjuster •Pneumatic lock-up valve •Reversing amplifier •Pneumatic volume booster •Type 3770 3701 3963 3962 4708 3999-009X3999-0096 3759 3709 3710 3755Refer to Data Sheet T … EN for details T 8379 T 3701 T 963 T 962-4 T 8546 T 3999-6 T 3999-8 T 8510 T 8391 T 8392 T 8393

Digital positionersThe Type 3730 and Type 3731 Positioners are single-acting ordouble-acting positioners designed for attachment to pneu-matic linear or rotary actuators.Compared to conventional positioners, the use of digital signalprocessing provides the following advantages:• User-friendly operation• Automatic adjustment of zero and span during the initializa-

tion procedure (except for Type 3730-0)• Automatic detection of faults occurring in the actuator• Direction of action independent of the mounting position• Permanent monitoring of zero• Minimized air consumption• Safe storage of all parameters in non-volatile EEPROMOptionally, these positioners may be equipped with the follow-ing additional functions:• One or two inductive limit switches (proximity switches)• Forced fail-safe venting of the actuator over a solenoid valve

upon failure of an external signal. As a result, the controlvalve moves to its fail-safe position.

Type 3730-0 Electropneumatic PositionerSingle-acting or double-acting electropneumatic positioner forattachment to pneumatic control valves. Travel range, range ofreference variable, and direction of action selectable over DIPswitches, zero and span adjustable over potentiometers

Travel 5.3 to 200 mm

Attachment Direct attachment to Type 3277 Actuator,to NAMUR ribs or rod-type yokes

Explosion protec-tion

II 2 G EEx ia IIC T6 acc. to ATEXII 3 G EEx nA/nL T6 andII 3 D IP 54/65 T 80 °C acc. to ATEX

FM, CSA, GOST, JIS approvals

Options –

Data Sheet T 8384-0 EN

Type 3730-1 Electropneumatic PositionerSingle-acting or double-acting electropneumatic positioner forattachment to pneumatic control valves. Self-calibrating, auto-matic adaptation to valve and actuator.Simple one-knob, menu-driven operationLC display easy to read in any mounted position due toselectable reading direction


Angle of rotation 24 to 100°

Attachment Direct attachment to Type 3277 Actuator,to NAMUR ribs, rod-type yokes, VDI/VDE 3845

Explosionprotection

II 2 G EEx ia IIC T6 andII 2 D IP 65 T 80 °C acc. to ATEXII 3 G EEx nA/nL II T6 andII 3 D IP 54/65 T 80 °C acc. to ATEX

FM, CSA approval

Options Two standard programmable position alarms


5 T 8350 EN

Fig. 4 · Type 3730-0 Electropneumatic Positioner,direct attachment to Type 3277 Actuator

Fig. 5 · Type 3730-1 Electropneumatic Positioner,attachment to NAMUR rib of Type 3271 Actuator

Fig. 6 · Type 3730-1 Electropneumatic Positioner,attachment to rotary actuators acc. to VDI/VDE 3845

Type 3730-2 and Type 3730-3 Electropneumatic Positionerwith HART® communicationSingle-acting or double-acting electropneumatic positioner forattachment to pneumatic control valves. Self-calibrating, auto-matic adaptation to valve and actuator. EXPERT diagnosticfunctions.




Reference variable 4 to 20 mA

Communication Type 3730-3 with HART® communication

Explosionprotection

II 2 G EEx ia IIC T6 andII 2 D IP 65 T 80 °C acc. to ATEXII 3 G EEx nA/nL II T6 andII 3 D IP 65 T 80 °C acc. to ATEX

FM, CSA approval

Options Extended EXPERTplus diagnostics, ESD version,inductive limit switch, position transmitter,solenoid valve with SIL 4 approval acc. toIEC 61508, external position sensor


Type 3730-4 Positioner with PROFIBUS-PA communicationand Type 3730-5 Positioner with FOUNDATION™ fieldbus

communicationSmart, bus-powered field devices according to PROFIBUS-PAor FOUNDATION™ fieldbus specification based onEN 61158-2 transmission technology.




Communication Type 3730-4 with PROFIBUS-PA communicationType 3730-5 with FOUNDATION™ fieldbus

communication

Explosionprotection

II 2 G EEx ia IIC T6 andII 2 D IP 65 T 80 °C acc. to ATEXII 3 G EEx nA II T6 andII 3 D IP 65 T 80 °C acc. to ATEX

FM, CSA, NEPSI Ex ia/nL approval

Options Inductive limit switch, solenoid valve, binaryinput, external position sensor, EXPERT+

Data Sheets T 8384-4 EN and T 8384-5 EN

EXPERT+ valve diagnostics for Series 3730 and Series 3731PositionersPositioner firmware for early detection of control valve faultsgiving maintenance recommendations.EXPERT is an enhanced firmware designed for predictive,status-oriented maintenance on control valves with pneumaticactuators. The diagnostic functions are completely integratedinto the positioner.EXPERT enables viewing and editing in TROVIS-VIEW operatorinterface or FDT/DTM engineering tools, which makes opera-tion easy to learn.Refer to Data Sheet T 8388 EN for details.

6 T 8350 EN

Fig. 8 · Typ 3730-4 PROFIBUS-PA Positioner,attachment to rotary actuators acc. to VDI/VDE 3845

Fig. 7 · Type 3730-2/-3 Electropneumatic Positionerwith external position sensor mounted on Type 3510Micro-flow Valve

Fig. 9 · Step response test for checking dynamic control response

Ex d positionersType 3731-3 Ex d Positioner with HART communicationSingle-acting or double-acting Ex d positioner for attachment topneumatic control valves. Self-calibrating, automatic adapta-tion to valve and actuator.




Reference variable 4 … 20 mA

Communication HART® communication

Explosionprotection

II 2 G EEx d IIC T6 andEEx de IIC T6 andII 2 D IP 65 T 80 °C acc. to ATEX

FM, CSA, NEPSI approvals

Options Binary contact, position feedback,forced venting, EXPERT+


Type 3731-5 Ex d Positioner with FOUNDATION™ fieldbus

communicationSmart, bus-powered field devices according to FOUNDATION™

fieldbus specification based on EN 61158-2 transmission tech-nology. Integrated Function Blocks: PID Process Controller, An-alog Output (AO), 2 Discrete Inputs (DI) and Link Master Capa-bility.




Communication FOUNDATION™ fieldbus communication

Explosionprotection

II 2 G EEx d IIC T6 andEEx de IIC T6 andII 2 D IP 65 T 80 °C acc. to ATEX

FM, CSA, NEPSI approvals

Options Binary input, limit switch,forced venting, external position sensor


TROVIS-VIEW Operator InterfaceTROVIS-VIEW is a standard operator interface, allowing theuser to configure and parameterize various SAMSON instru-ments using a device-specific database module.Data is transferred between the TROVIS-VIEW software and theSAMSON device either directly using a connecting cable or in-frared adapter or indirectly using a memory pen or memorymodule. A direct connection enables both online and offline op-eration. This means that data can be changed in the device im-mediately, or they can be saved on the PC first and later down-loaded to the device on site.The device-specific modules contain a database providing thecharacteristic properties of each device type, such as parame-ters, data points, user levels, etc.Refer to Data Sheet T 6661 EN for details.

7 T 8350 EN

Fig. 12 · TROVIS-VIEW Operator Interface withType 3730 Positioner

Fig. 11 · Type 3731 Ex d Positioner, terminal compartmentand cover for operating button opened

Fig. 10 · Type 3731-3 Ex d Positioner withHART® communication or Type 3731-5 Positionerwith FOUNDATION™ fieldbus communication

Electropneumatic and pneumaticpositionersType 3766 Pneumatic PositionerType 3767 Electropneumatic PositionerSingle- or double-acting p/p (Type 3766) or i/p (Type 3767)positioners for pneumatic linear and rotary actuators.


Angle of rotation Up to 90°


Reference variable Type 3766: 0.2 … 1 bar (3 … 15 psi)Type 3767: (0)4 … 20 mA

Explosionprotection

II 2 G EEx ia IIC T6 andII 3 G EEx nA II T6 acc. to ATEX

FM, CSA, GOST, JIS approvalsType 3766 also with IECEx TSA (Australia)approval or Ex d with Type 6116 i/p Converter

Options Limit switch, solenoid valve, position transmitter

Data Sheet T 8355 EN

Type 4763 Electropneumatic PositionerType 4765 Pneumatic PositionerSingle-acting electropneumatic (Type 4763) or pneumatic(Type 4765) positioner for pneumatic linear actuators.

Travel 7.5 to 90 mm

Attachment NAMUR ribs, rod-type yokes

Reference variable Type 4763: (0)4 … 20 mAType 4765: 0.2 … 1 bar

Explosionprotectionfor Type 4763Type 4765


FM, CSA approvalsEx d with Type 6116 i/p Converter

Options Special version with oxygen as operating me-dium


Type 3760 Electropneumatic Positioner andPneumatic PositionerCost-effective, single-acting pneumatic or electropneumaticpositioner designed for direct attachment to Type 3277 Pneu-matic Actuator.

Travel 5 to 15 mm

Attachment Direct attachment to Type 3277 Actuator

Reference variable 0.2 … 1 bar (3 … 15 psi)(0)4 … 20 mA, 1 … 5 mA

Explosionprotection


FM, CSA, JIS, AUS approvalsEx d with Type 6116 i/p Converter

Options Limit switch


8 T 8350 EN

Fig. 13 · Type 3766 Positioner,attachment acc. to IEC 60534 (NAMUR)

Fig. 14 · Type 4763 Electropneumatic Positioner withpressure gauges

Fig. 15 · Micro-flow valve with EEx d positioner(Type 3760 Positioner and Type 6116Electropneumatic Converter)

Type 3761 Electropneumatic Positionerfor rotary actuatorsSingle-acting or double-acting pneumatic or electropneumaticpositioner for attachment to rotary actuators.

Angle of rotation Max. 90°

Attachment According to VDI/VDE 3845

Reference variable 0.2 … 1 bar (3 … 15 psi) or4 … 20 mA

Explosionprotection

II 2 G EEx ia IIC T6

Options Limit switch


9 T 8350 EN

Fig. 16 · Type 3761 Electropneumatic Positionerattached to Type 3278 Rotary Actuator

System 6000Converters for direct current signal

Type 6116 Electropneumatic ConverterDevices used to convert a direct current input signal into a pneu-matic output signal for measuring and control. Especially suit-able as intermediate element between electric measuring de-vices and pneumatic controllers or between electric control de-vices and pneumatic control valves.The electropneumatic converter can be combined with variouspneumatic positioners to provide a flameproof version.

Input 4 … 20 mA

Output 0.2 ... 1 bar (3 ... 15 psi) or0.4 ... 2 bar (6 ... 30 psi)Special ranges available

Supply air Min. 0.4 bar above upper signal pressurerange

Explosionprotection

II 2 G EEx ia IIC T6 andII 2 G EEx d IIC T6 acc. to ATEX

FM, CSA, GOST, JIS, AUS approvals

Options Pressure gauge; extended temperature range


Type 6151 u/i ModuleThe Type 6151 u/i Module converts a DC voltage into a currentsignal. It is suitable for attachment to devices with an electricalconnection according to DIN EN 175301-803. The standardhousing connector or a special device connector for differentversions may be used.

Input 0(2) … 10 V

Output 0(4) … 20 mA

Auxiliary power 16 … 30 V DC


10 T 8350 EN

Fig. 17 · Type 6116 Electropneumatic Converter mountedon Type 3766 Pneumatic Positioner

Fig. 18 · Type 6151 u/i Module

Limit switches, position transmitters

The limit switches supply a signal when an adjusted limit value isexceeded in either direction. This signal is suitable for initiatingvisual or audible alarms as well as pilot valves or other switch-ing units. Moreover, the limit switches can be connected to cen-tral control or alarm systems.

Type 4746 Electric or Pneumatic Limit SwitchLimit switch for attachment to pneumatic or electric controlvalves as well as for attachment to Type 4763 ElectropneumaticPositioners or Type 4765 Pneumatic Positioners.

Contacts 2 contacts optionallyinductive, electric or pneumatic

Attachment Actuators with cast yokes or rod-type yokesacc. to IEC 60534-6Type 4763 Electropneumatic PositionerType 4765 Pneumatic Positioner

Supply air 1.4 bar for pneumatic limit switch

Explosionprotection

II 2 G EEx ia IIC T6 andII 3 G EEx nA II T6, Zone 2 acc. to ATEX

FM, CSA, GOST, NEPSI approvals


Type 3776 Limit Switch (SAMSOMATIC)Limit switch with inductive or electric contacts and solenoidvalve for linear actuators or rotary actuators according toVDI/VDE 3845.

Travel range 7.5 … 120 mm

Rotational angle 0 … 100° or 0 … 180° adjustable

Contacts Max. 3 piecesinductive proximity switches,inductive double proximity switches orelectric microswitches

Solenoid valve Safety integrity level SIL 4 acc. to IEC 615081 or 2 integrated pilot valvesNominal signals 6/12/24 V DC or24/115/230 V ACSupply air 2.2 to 6 bar

Attachment Direct attachment to Type 3277 andType 3277-5 ActuatorsAttachment to actuators with NAMUR rib acc.to IEC 60534-6-1Rotary actuators acc. to VDI/VDE 3845 withfixing levels 1 or 2

Explosionprotection


GOST approval

Options Integrated AS-Interface module with bus con-nection


11 T 8350 EN

Fig. 19 · Type 4746-x2 Inductive Limit Switch

Fig. 20 · Type 3776 Limit Switch for linear actuators

Fig. 21 · Type 3776 Limit Switch forrotary actuators according to VDI/VDE 3845

Type 3768 Inductive Limit SwitchLimit switch with two inductive switches (proximity switches) andoptionally one 3/2-way solenoid valve, which registers a binarysignal issued by a control device and converts it into a binary sig-nal pressure. When the solenoid valve is in de-energized state,the actuator moves the valve to the fail-safe position.


Contacts 2 inductive proximity switches

Attachment Direct attachment to Type 3277 ActuatorAttachment to actuators with NAMUR rib acc.to IEC 60534-6-1Attachment to rotary actuators acc. toVDI/VDE 3845

Explosionprotection

II 2 G EEx ia IIC T6 andII 3 G EEx nA II T6; Zone 2; acc. to ATEX

FM, CSA, GOST, NEPSI approval

Option 3/2-way solenoid valve


Type 3738-20 Electronic Limit SwitchElectronic limit switch for on/off applications to indicate the endposition of rotary actuators. Optionally with integrated solenoidvalve.Proven operation concept already used in Series 373xPositioners:Menu-driven, on-site operation using one rotary pushbutton,display easy to read in any mounting position. Additionally,communication connection for convenient parameter settingsand documentation using TROVIS-VIEW software.

Range of rotation Min. 0 … 30°, max. 0 … 170°

Sensor Wear-free magnetoresistive travel sensor

Contacts acc. toNAMURIEC 60947-5-6

A: Limit switch for fail-safe positionB: Limit switch for operating positionC: Signal when target range reached during

advanced partial stroke testSTAT: Status message or error message

Attachment Using mounting platform acc. toVDI/VDE 3845, fixing level 2

Solenoid valve External: 24 V DC, max. 18 WInternal: 3/2-way or 5/2-way-function

Electric powersupply

Supplied over a two-wire system solely from theNAMUR signal

Indications LC display with reversible reading direction,LED for solenoid valve status

Explosionprotection

II 2 G Ex ia IIC/IIB T6: Type 3738-20-110II 2 G e [ia] IIC T4: Type 3738-20-310


12 T 8350 EN

Fig. 22 · Type 3768 Inductive Limit Switch

Fig. 23 · Type 3738-20 Electronic Limit Switch mounted on apiston actuator

Type 4744 Electric Limit Switch forhazardous areasLimit switch with one or two momentary-contact limit switches intype of protection “Flameproof enclosure” EEx de IIC T6.Type 4744-2 Limit Switch with one momentary-contact switchfor mounting to a rod-type yoke of V2001 Series Valves


Contacts Type 4744: 1 or 2Type 4744-2: 1

Attachment Type 4744: Attachment to actuators withNAMUR rib acc. to IEC 60534-6-1Type 4744-2: Rod-type yoke of V2001 SeriesValves

Explosionprotection

II 2 G EEx ed IIC T6 andII 2 D IP 65 T 80 °C andII 2 G EEx de IIC T6 andII 2 D IP 65 T 80 °C acc. to ATEX

Type 4744-2: II 2 G EEx d IIC T6/T5GOST approval


Type 4748 Analog Position TransmitterAnalog position transmitter for attachment to control valves aswell as Type 4763 Electropneumatic Positioner or Type 4765Pneumatic Positioner to convert the valve travel into a continu-ous output signal between 4 to 20 mA.Connection as two-wire transmitter.

Travel range 7 … 120 mm

Output signal 4 … 20 mA

Attachment Attachment to actuators with NAMUR rib orpillar-type yoke acc. to IEC 60534-6-1Type 4763 Electropneumatic PositionerType 4765 Pneumatic Positioner

Explosionprotection

II 2 G EEx ia IIC T6 andII 3 G EEx nA II T6 Zone 2 acc. to ATEX


13 T 8350 EN

Fig. 24 · Type 4744 Electric Limit Switch

Fig. 25 · Type 4744-2 Electric Limit Switch

Fig. 26 · Type 4748 Analog Position Transmitter

AccessoriesType 3770 Ex d/Ex i Field BarrierField barrier with flameproof enclosure serving as an interfacebetween intrinsically safe and non-intrinsically safe circuits inhazardous areas. The field barrier is suitable for operatingpositioners, smart positioners using HART protocol,electropneumatic converters, solenoid valves, or limit switches.Refer to Data Sheet T 8379 EN for more details.

Type 3701 Solenoid Valve (SAMSOMATIC)The pilot-controlled solenoid valve converts electric binary sig-nals into binary pneumatic signals.

Solenoid valve 3/2-way or 5/2-way

Attachment Attachment to actuators with NAMUR rib,rod-type yokes or to rotary actuators withNAMUR interface

Nominal signal 6/12/24 V DC or 24/48/115/230 V AC

Supply air 1.4 … 6 bar (20 … 90 psi)

Explosionprotection

II 2 G EEx ia IIC T6; Zone 1 andII 3 G EEx nA II T6; Zone 2; acc. to ATEX

CSA, FM approvals

Options Safety approval SIL 4 or TÜV


Type 3963 Solenoid Valve (SAMSOMATIC)Solenoid valve series consisting of a 3/2-way pilot valve anddiverse 3/2-way, 5/2-way or 6/2-way booster valves.Low power consumption between 20 and 150 mW.

Pilot valve e/p binary converter

Nominal signal 6/12/24 V DC or 24/48/115/230 V AC


Booster valve 3/2, 5/2, 5/3 or 6/2 function

Attachment Attachment to actuators with NAMUR rib acc.to IEC 60534-6-1 or to rotary actuators withNAMUR interface acc. to VDI/VDE 3845

Explosionprotection

II 2 G EEx ia IIC T6 orII 3 G EEx nA II T6 acc. to ATEX

CSA, FM, GOST, NEPSI approvals

Options SIL 4 acc. to IEC 61508


14 T 8350 EN

Fig. 27 · Type 3770 Ex d/Ex i Field Barrierwith Type 3780 Positioner

Fig. 28 · Type 3701-01 Solenoid Valve

Fig. 29 · Type 3963-..25 Solenoid Valve

Type 3962 Pilot Valve (SAMSOMATIC)The pilot valve is used to control booster or diaphragm valves aswell as valves conforming to ISO 5599/1 with CNOMOinterface.

Construction Solenoid coil and seat valve with return spring

Nominal signal 24 V DC or 24/115/230 V AC


For controlling Type 3756 Booster Valve(Data Sheet T 756-1/5 EN and T 756-6 EN)

Type 3994-0671 Diaphragm Valve(Data Sheet T 994-0671 EN)

Valves acc. to ISO 5599/1with CNOMO interface

Attachment Attachment to actuators with NAMUR rib acc.to IEC 60534-6-1 or to rotary actuators withNAMUR interface acc. to VDI/VDE 3845

Explosionprotection

EEx em T5/T6 orEEx d IIC T4/T5/T6


Type 4708 Supply Pressure RegulatorSupply pressure regulators provide pneumatic measuring andcontrol equipment with a constant air supply. The pressure reg-ulator reduces and controls the pressure of a compressed airnetwork to the pressure adjusted at the set point adjuster.Versions for installation in pipelines or control panels or for di-rect attachment to positioners or pneumatic actuators.

Set point range 0.5 … 6 bar (8 … 90 psi) or0.2 … 1.6 bar (3 … 23 psi)

Operating pressure Max. 12 bar (175 psi)

Versions Aluminum or stainless steel body

Filter Optionally with plastic, aluminum orstainless steel filter receptacle

Adapter For attachment to positioners or pneumaticactuators

Option Pressure gauge


Type 4708-45 with ½” connections and increased air capacity

15 T 8350 EN

Fig. 30 · Type 3962-9x04 EEx d Pilot Valvewith Type 3756 Booster Valve

Fig. 31 · Type 4708-11 Supply Pressure Regulator withpressure gauge and filter

Fig. 32 · Type 4708-45 Supply Pressure Regulator with½” connection

Type 3999-009x Service Unit Model (SAMSOMATIC)for purifying and controlling compressed airThe service unit model is used to supply compressed air to pneu-matic converters, controllers and positioners. It cleans the com-pressed air, removing any dirt particles, water and oil. In addi-tion, it regulates the air pressure to a constant output pressure.

Set point range 0.5 … 10 bar (8 … 145 psi) adjustable

Operating pressure Max. 16 bar (230 psi)

Version Pipe or wall mounting

Filter unit Coarse filter, submicro filter, pressure regulatorwith secondary venting, pressure gauge

Condensatedrainage

Automatic over float valve or solenoid valve

Options Pressure switch or differential pressure switch,solenoid valves


Type 3999-0096 Filter Regulator (SAMSOMATIC)The filter regulator is used to supply compressed air to volumeboosters for large actuators. It cleans the compressed air, re-moving any dirt particles, water and oil. In addition, it regulatesthe air pressure to a constant output pressure.

Set point range 0.5 … 10 bar (8 … 145 psi) adjustable

Operatingpressure p1

Max. 16 bar (230 psi)

Version With mounting bracket

Filter unit Filter, pressure regulator and pressure gauge

Condensatedrainage Manually over drainage valve


Type 3759 Pneumatic Remote AdjusterA precision pressure regulator which can be manually adjusted.It is designed for use in pneumatic control loops as either a setpoint adjuster or manual remote adjuster and can be used as anadjustable precision pressure regulator for measuring, calibra-tion and testing equipment.

Set point ranges 0 … 0.6 bar (0 … 9 psi)0 … 1.6 bar (0 … 23 psi)0 … 4 bar (0 … 60 psi)0 … 6 bar (0 … 90 psi)

Operatingpressure p1

Max. 7 bar (100 psi)

Version Panel mounting or installation


Type 3709 Pneumatic Lock-up ValvePneumatic lock-up valve for shutting off the signal pressure lineof pneumatic actuators upon failure of the supply air.

Signal pressure Up to 6 bar (90 psi)

Supply air Max. 12 bar (175 psi)


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Fig. 34 · Type 3999-0096 Filter Regulator

Fig. 35 · Type 3759 Pneumatic Remote Adjuster

Fig. 36 · Type 3709 Pneumatic Lock-up Valve

Fig. 33 · Type 3999-009x Service Unit Model

Type 3710 Reversing AmplifierThe reversing amplifier allows double-acting pneumatic actua-tors to be operated using single-acting positioners.The positioner creates an output signal pressure Y1, to which theair pressure Y2 is added.The reversing amplifier uses the supply pressure Z as auxiliarypower. The following rule applies:Y1 + Y2 = Z

Supply pressure Max. 6 bar (90 psi)

Threadedconnections ISO 228/1-G ¼ or ¼-18 NPT

Ambient tempera-ture range –25 ... 80 °C (–13 ... 176 °F)

Degree of protec-tion IP 65

Options Pressure gauge for Y1 and Y2 ora pressure gauge for Y2 in conjunction withType 4708-54 Supply Pressure Regulator


Type 3755 Pneumatic Volume BoosterThe volume booster is used together with positioners to increasethe positioning speed of pneumatic actuators. It supplies an airflow output at the actuator port whose pressure corresponds ex-actly with the signal pressure, except that it has a much highervolume output.

Supply pressure Max. 10 bar (150 psi)

Signal and actua-tor pressure Max. 7 bar (105 psi)

Pressure ratio Signal to output = 1:1

Ambient tempera-ture range –40 to 80 °C (–40 … 176 °F)

Options Flanged-on exhaust portNPT threads


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Fig 37 · Type 3710 Reversing Amplifier with two pressuregauges

Fig. 38 · Type 3755 Pneumatic Volume Booster

Specifications subject to change without notice.

T 8350 EN

SAMSON AG · MESS- UND REGELTECHNIKWeismüllerstraße 3 · 60314 Frankfurt am Main · GermanyPhone: +49 69 4009-0 · Fax: +49 69 4009-1507Internet: http://www.samson.de 20

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