Emerson Fisher 3710 Data Sheet
Contents
1. 1 These hazardous area classification also apply to 3720 positioners Table 3 Hazardous Area Classifications for Fisher 3722 Electro Pneumatic Converter 1 FM United States Certification Body Certification Obtained Entity Rating Temperature Code Intrinsically Safe Vma SO VDE Class I Zone 0 AEx ia IIC T4 T5 T6 per drawing GE28590 lia T90 mA TA Tambs 82 C fee Pi 1 25W T5 Tamb lt 62 C Class Il Ill Division 1 GP A B C D E F G T4 T5 T6 aa 3 A Ci 0nF T6 Tamb lt 47 C per drawing GE28590 G 0mH Explosion proof FM ass Zone 1 AEx d IIC T5 T5 Tamb lt 82 C ass I Division GP A B C D T5 aaa ypen ass Zone 2 AEX nA IIC T5 T5 Tamb lt 82 C ass l Division 2 GP A B C D T5 ass Il Division 1 GP E F G T5 Class Il Division 2 GP F G T5 QAIQ T5 Tamb lt 82 C 1 These hazardous area classification also apply to 3720 positioners Table 4 Hazardous Area Classifications for Fisher 3722 Electro Pneumatic Converter 1 ATEX Certification Certification Obtained Entity Rating Temperature Code ATEX I1G amp D Intrinsically Safe Gas Ex ia IIC T4 T5 T6 Ga Dust Ex ia IIIC Da T120 C Tamb lt 82 C T100 C Tamb lt 62 C T85 C Tamb lt 47 C Ui 30 VDC li 150 mA Pi 1 25W Ci OnF Li 0 mH T4 Tamb lt 82 C T5 Tamb lt 62 C T6 Tamb lt 47 C I2 G amp D Flameproof Gas Ex d IIC2. 5 of output span Deadband 0 3 of input span 3720 Electro Pneumatic Positioner Independent Linearity 1 0 of output span Hysteresis 0 6 of output span Deadband 0 35 of input span Electromagnetic Compatibility for 3722 electro pneumatic converter Meets EN 61326 1 First Edition Immunity Industrial locations per Table 2 of the EN 61326 1 standard Performance is shown in table 1 below Emissions Class A ISM equipment rating Group 1 Class A Note Electromagnetic Compatibility specifications also apply to the 3720 positioner Operating Influences Supply Pressure Sensitivity A 10 change in supply pressure changes the valve shaft position less than the following percentages of valve rotation 3710 1 0 at 4 1 bar 60 psig supply pressure 3720 1 5 at 4 1 bar 60 psig supply pressure Operative Temperature Limits 2 m 40 to 80 C 40 to 180 F m 50 to 107 C 58 to 225 F Construction Materials Positioner Base Low copper aluminum alloy Cover Polyester plastic Feedback Shaft Stainless steel Range Spring Stainless steel 3710 and 3720 Positioners D200437X012 Specifications Continued Construction Materials continued Input Module Diaphragm O rings m Nitrile or m Ethylene propylene EPDM Spool Valve SST C72900 Tubing Copper standard Fittings Brass standard Gauges Chrome plated brass connection with plastic case Connectors for diagnostic testing m Stainless steel or
3. T5 Gb Dust Ex tb IIIC Db T82 C Tamb lt 79 C T5 Tamb lt 82 C amp I13G amp D Typen Gas Ex nA IIC T6 Gc Dust Ex tc IIIC Dc T85 C Tamb lt 82 C T6 Tamb lt 82 C 1 These hazardous area classification also apply to 3720 positioners Product Bulletin 3710 and 3720 Positioners 62 1 3710 D200437X012 February 2015 Table 5 Hazardous Area Classifications for Fisher 3722 Electro Pneumatic Converter 1 IECEx Certification Certification Obtained Entity Rating Temperature Code Ui 30 VDC Intrinsically Safe li 150 mA T4 Tamb lt 82 C Gas Pi 1 25W T5 Tamb lt 62 C Ex ia IIC T4 T5 T6 Ga Ci OnF T6 Tamb lt 47 C Li 0 mH IECEx Flameproof Gas T5 Tamb lt 82 C Ex d IIC T5 Gb Type n Gas T6 Tamb lt 82 C Ex nA II T6 Gc 1 These hazardous area classification also apply to 3720 positioners 11 Product Bulletin 62 1 3710 3710 and 3720 Positioners February 2015 D200437X012 Neither Emerson Emerson Process Management nor any of their affiliated entities assumes responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end user Fisher is a mark owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co Emerson Process Management
4. E Brass Electrical Classifications for 3722 Converter CSA Intrinsically Safe Explosion proof Type n Dust Ignition Proof FM Intrinsically Safe Explosion proof Type n Non incendive Dust Ignition Proof ATEX Intrinsically Safe Flameproof Type n IECEx Intrinsically Safe Flameproof Type n Refer to tables 2 3 4 and 5 for additional approvals information Note These classifications also apply to the 3720 positioner Housing Classification for 3722 Converter CSA Type 3 Encl FM NEMA 3 IP54 ATEX IP64 IECEx IP54 Mount instrument with vent on side or bottom if weatherproofing is a concern Note These classifications also apply to the 3720 positioner Other Classifications Certifications for 3722 Converter CUTR Customs Union Technical Regulations Russia Kazakhstan and Belarus INMETRO National Institute of Metrology Quality and Technology Brazil KGS Korea Gas Safety Corporation South Korea Contact your Emerson Process Management sales Product Bulletin 62 1 3710 February 2015 office for classification certification specific information Note This classification also applies to the 3720 positioner Hazardous Area Classification for 3710 Positioner 3710 pneumatic positioners comply with the requirements of ATEX Group II Category 2 Gas and Dust C x m2eD Meets Customs Union technical regulation TP TC 012 2011 for Groups II III Category 2 equipment II Gb
5. Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co All other marks are the property of their respective owners The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their use or applicability All sales are governed by our terms and conditions which are available upon request We reserve the right to modify or improve the designs or specifications of such products at any time without notice Emerson Process Management Marshalltown lowa 50158 USA Sorocaba 18087 Brazil Chatham Kent ME4 4QZ UK Dubai United Arab Emirates ey Singapore 128461 Singapore www Fisher com EMERSON Process Management 1991 2015 Fisher Controls International LLC All rights reserved Frocess Nanhagement
6. R TIE BAR MOUNTING PLATE EXTENSION The piston in the actuator moves to the right rotating the feedback shaft and cam counterclockwise This rotation causes the feedback lever to rotate clockwise increasing the compression on the feedback spring These rotations continue until the additional force from the spring balances with the input module force on the summing beam When the forces are equal the summing beam returns to its steady state or neutral position and the actuator is held at a new position In a 3720 positioner the 3722 converter receives the milliampere mA direct current DC input signal and provides a proportional pneumatic output signal through a nozzle flapper arrangement Nozzle pressure from the converter module travels through the converter housing to provide the input signal pressure to the 3710 pneumatic positioner The feedback lever position is determined by the location or rise of the cam figure 4 which is attached to the feedback shaft When the two opposing forces are equal or at a steady state the summing beam holds the spool in a neutral position At steady state a small flow of air passes from supply through both outputs of the spool valve to the actuator holding the actuator at a constant position At the same time another small flow of air exhausts out each end of the spool valve Product Bulletin 3710 and 3720 Positioners 62 1 3710 D200437X012 February 2015 Figure 3 Fisher 3710 Position
7. al for the pneumatic positioner Input Signal 3710 Standard m 0 2 to 1 0 bar 3 to 15 psig orm 0 4 to 2 0 bar 6 to 30 psig Split Range m 0 2 to 0 6 bar 3 to 9 psig and 0 6 to 1 0 bar 9 to 15 psig or m 0 4 to 1 2 bar 6 to 18 psig and 1 2 to 2 0 bar 18 to 30 psig 3720 Standard m 4 20 mA DC constant current with 30 VDC maximum compliance voltage Split Range m 4 12 mA DC or 12 20 mA DC Equivalent Circuit 3720 120 ohms shunted by three 5 6 V zener diodes Output Signal Pneumatic pressure as required by the actuator up to full supply pressure Action Field reversible between direct and reverse Supply Pressure 2 Minimum Recommended 0 3 bar 5 psig above actuator requirement Maximum 10 3 bar 150 psig or maximum pressure rating of the actuator whichever is lower Supply Medium 3710 Air or Natural Gas 3 3720 Air The 3720 positioner is not approved for use with Natural Gas as the supply medium Steady State Air Consumption 4 3710 6 mm Spool Valve 0 82 normal m3 hr 29 scfh at 4 1 bar 60 psig supply pressure continued 3710 and 3720 Positioners D200437X012 3720 6mm Spool Valve 1 0 normal m3 hr 36 scfh at 4 1 bar 60 psig supply pressure Maximum Supply Air Demand 4 Double Acting 6 mm Spool Valve 20 normal m3 hr 700 scfh at 4 1 bar 60 psig supply pressure Typical Performance gt 3710 Pneumatic Positioner Independent Linearity 0 5 of output span Hysteresis 0
8. c T X xl IIl Db c T X EAL Note These ratings do not apply to the 3720 positioner Pressure Connections 1 4 NPT internal Electrical Connection for 3720 Positioner 1 2 14 NPT conduit connection Rotary Valve Rotation m 90 degrees standard m 60 degrees optional Options Span Adjuster Assembly m 0 2 to 1 0 bar 3 to 15 psig input range or m 0 4 to 2 0 bar 6 to 30 psig input range Elastomers O rings diaphragm m standard temperature range 40 to 80 C 40 to 180 F m extended temperature range 50 to 107 C 58 to 225 F E Special applications m Beacon indicator m Gauges tire valves or connectors for diagnostic testing Approximate Weight 3710 2 04 kg 4 5 pounds 3720 2 72 kg 6 0 pounds NOTE Specialized instrument terms are defined in ANSI ISA Standard 51 1 Process Instrument Terminology 1 Direct acting an increasing input signal extends actuator rod Reverse acting an increasing in 2 The pressure and temperature limits in this document and any applicable standard or code lim 3 Natural gas should not contain more than 20 ppm of H2S put signal retracts actuator rod itation should not be exceeded 4 Normal m3 hr Normal cubic meters per hour 0 C and 1 01325 bar absolute Scfh Standard cubic feet per hour 60 F and 14 7 psia 5 Typical values determined by tests with a 1061 size 30 actuator at 4 1 bar 60 psig supply pressure Performance may vary with other actuator types and su
9. ect or reverse acting 4 Actuator type size and degrees of rotation 5 Maximum supply pressure available Product Bulletin 62 1 3710 February 2015 6 Ambient temperature range 7 Special application material requirements such as EPDM elastomers 8 Supply pressure regulator and options such as gauges or tire valves if required 9 Connectors for diagnostic testing if required Construction Specifications Refer to the construction details given in the Specifications If different materials of construction are required contact your Emerson Process Management sales office Product Bulletin 62 1 3710 February 2015 3710 and 3720 Positioners D200437X012 Table 2 Hazardous Area Classifications for Fisher 3722 Electro Pneumatic Converter CSA Canada Certification Body Certification Obtained Entity Rating Temperature Code Intrinsically Safe Vmax 30 VDC Ex ia IIC T4 T5 T6 per drawing GE28591 Imax 150 mA T4 Tamb lt 82 C Ex ia Intrinsically Safe Pi 1 25 W T5 Tamb lt 62 C Class II Division 1 GP A B C D E F G T4 T5 T6 Ci 0nF T6 Tamb lt 47 C per drawing GE28591 Li 0 mH Explosion proof ER Exd IIC T5 ne T5 Tamb lt 82 C Class l Division 1 GP A B C D T5 Typen O o Sane T6 Tamb lt 82 C Class Division 2 GP A B C D T6 T6 Tamb lt 82 C Class Il Division 1 GP E F G T5 a T5 Tamb lt 82 C Class Il Division 2 GP F G T6 T6 Tamb lt 82 C
10. er Schematic INPUT SIGNAL PRESSURE INPUT MODULE re SUMMING BEAM DEEE a K PIVOT Pe FEEDBACK A 1 SPRING yea g SPAN ADJ EEE F PIVOT ONA 5 FEEDBACK z LEVER ie aE ZERO AD j PIVOT LC OUTPUT B PISTON ACTUATOR A5944 1 OUTPUTA Figure 4 Cam Installation The supply pressure medium must be a clean dry filtered air or noncorrosive gas 3710 positioner only If the supply source is capable of exceeding the maximum actuator operating pressure or positioner supply pressure take appropriate steps during installation to protect the positioner and all connected equipment against overpressure Positioner connections including connections for diagnostic testing and overall dimensions are shown in figure 5 CAM ROLLER A6045 Product Bulletin 3710 and 3720 Positioners 62 1 3710 February 2015 D200437X012 Figure 5 Dimensions and Connections BODY PROTECTOR a BODY PIPE BUSHING PIPE TEE 1 4 18 NPT 41 8 OUTPUT CONN A 1 65 PLUGGED ON SINGLE ACTING FIFE NIPPLE nee DIAGNOSTIC CONNECTOR 1 4 18 NPT INSTR CONN 1 4 18 NPT OUTPUT CONN B 1 4 18 NPT SUPPLY CONN 1 65 132 6 5 22 A5945 1 39 6 1 56 11B5496 A mm i INCH A6149 1 3710 and 3720 Positioners D200437X012 Ordering Information When ordering specify Required Application Information 1 Positioner type number 2 Pneumatic or DC current input signal range 3 Dir
11. ollowing Fisher actuators 1031 size 26 33 45 60 and 80 1032 size 45 70 185 280 425 680 1125 1370 2585 and 4585 1051 size 33 1052 size 20 33 1061 size 80 100 1066 size 20 27 and 75 2052 size 1 2 and 3 Product Bulletin 62 1 3710 February 2015 Figure 2 Mounting the Positioner Base Plate MOUNTING SCREW FEEDBACK SHAFT MOUNTING w6059 SCREWS Principle of Operation Refer to the positioner schematic figure 3 The operational description here follows the schematic layout and orientation The 3710 pneumatic positioner is a force balance instrument that provides a control valve position proportional to a pneumatic input signal The balance of opposing forces in the positioner occurs at the summing beam One force applied to the summing beam is developed from the input signal pressure on the diaphragm The other force is from the feedback spring and is proportional to the position of the feedback lever When the input pressure is increased to the diaphragm of the input module the diaphragm strokes down increasing the effective force from the input module and compressing the feedback spring The summing beam moves the spool down in the spool body opening output port B to supply air to the left side of the actuator At the same time output port A of the spool valve opens allowing the right side of the actuator to vent to atmosphere 3710 and 3720 Positioners D200437X012 POSITIONE
12. ot Product Bulletin 3710 and 3720 Positioners 62 1 3710 D200437X012 February 2015 Fisher 3710 and 3720 Positioners and 3722 Electro Pneumatic Converter Fisher 3710 pneumatic and 3720 electro pneumatic positioners are designed for use with either diaphragm or piston rotary actuators These positioners provide a valve ball or disk position for a specific input signal The 3710 provides a valve position in response to a pneumatic input signal The 3720 is created by the addition of a Fisher 3722 electro pneumatic converter to the 3710 positioner The positioner provides a valve position in response to a DC current input signal Either type can easily be configured as single or double acting for rotary actuators SUPPLY CONNECTION W6144 FISHER 3720 POSITIONER MOUNTED ON A 1052 ACTUATOR SUPPLY CONNECTION EXTERNAL GROUNDING SCREW W6058 1 1 2 NPT OR M20 we145 CONDUIT CONNECTION FISHER 3710 POSITIONER MOUNTED ON A 1066 ACTUATOR FISHER 3722 ELECTRO PNEUMATIC CONVERTER A EMERSON Process Management www Fisher com Product Bulletin 62 1 3710 February 2015 Specifications Available Configuration 3710 Single or m double acting pneumatic rotary valve positioner 3720 m Single or m double acting electro pneumatic rotary valve positioner consisting of a 3710 with a 3722 attached 3722 An electro pneumatic converter that converts a 4 20 mA DC input signal to a 0 2 to 1 0 bar 3 to 15 psig sign
13. pply pressures 6 Gauges not available for high temperature range Product Bulletin 62 1 3710 3710 and 3720 Positioners February 2015 D200437X012 Table 1 Fisher 3722 Electro Pneumatic Converter EMC Summary Results Immunity Port Phenomenon Basic Standard Test Level kerformance Criteria 2 Electrostatic Discharge ESD IEC 61000 4 2 4KV contact A 8 kV air 80 to 1000 MHz 10V m with 1 kHz AM at 80 Enclosure Radiated EM field IEC 61000 4 3 1400 to 2000 MHz 3V m with 1 kHz AM at 80 A 2000 to 2700 MHz 1V m with 1 kHz AM at 80 ae power frequency magnetic IEC 61000 4 8 60 A mat 50 Hz A Burst fast transients IEC 61000 4 4 TkV A I O signal control Surge IEC 61000 4 5 1 kV line to ground only B Conducted RF IEC 61000 4 6 150 kHz to 80 MHz at 3 volts A Specification limit 1 of span 1 The information contained in the table also applies to the 3720 positioner 2 A No degradation during testing B Temporary degradation during testing but is self recovering Features Accurate Fast Response 37 10 and 3720 positioners use field proven spool valve technology for a simple design that gives accurate fast responding operation with high cycle life These positioners are able to withstand the severe vibrations of most plant environments Modular Construction The 3710 positioner converts easily to a 3720 positioner by adding the 3722 electro pneumatic converter The conve
14. rter mounts over the instrument and supply ports in the 3710 positioner base This provides a simple compact and cost effective field conversion from pneumatic to electro pneumatic valve positioning Corrosion Resistant Construction with Air Purge Case components and gasket materials withstand harsh environments Proven engineered resins and 300 Series stainless steel construction is used throughout each unit Die castings are low copper aluminum alloy to maximize corrosion resistance Positioner bleed air purges internal positioner parts As an option with some Fisher actuators bleed air also purges the actuator housing for additional protection Extended Temperature Capability With EPDM O rings and input module diaphragm 3710 and 3720 positioners can be used in low temperature and high temperature applications Meets Special Application Requirements 3710 and 3720 positioners with EPDM O rings and input module diaphragm can be used in applications with special material requirements as in the food and beverage industry pharmaceuticals and tobacco processing Easy Positioner Adjustments With the cover removed figure 1 all internal components are easily accessed Zero and span adjustments are made by hand with no tools required Stable Operation Changes in supply pressure and ambient temperature have minimal effect on positioner operation Control Valve Diagnostic Testing Capability To support diagnostic tes
15. ting of valve actuator positioner packages connectors piping and other hardware can be installed between the 3710 positioner and the actuator A typical connector installation is shown in figure 5 Valve Position Indicator Standard low profile indicator or optional beacon style indicator mount easily to the positioner cover 3710 and 3720 Positioners D200437X012 Figure 1 Features and Adjustments 1 NAMEPLATE n SPAN ADJ ASSY AREA SCREENED VENT OPENING ZERO ADJ PIVOT SPAN ADJ SHAFT THREADED ROD ZERO ADJUSTER LOCK NUT ZERO ADJUSTER FEEDBACK ARM ASSEMBLY Notes W5947 Actuators The positioner mounts integrally to the actuator cover plate figure 2 of the following Fisher actuators m 1051 and 1052 size 30 The size 30 actuator is no longer manufactured by Emerson Process Management The 3710 positioner is available for field installation on existing size 30 actuators m 1051 size 40 and 60 m 1052 size 40 60 and 70 m 1061 size 30 40 60 and 68 Product Bulletin 62 1 3710 February 2015 ACTION BLOCK MOUNTING SCREW HOLE SPOOL VALVE INPUT MODULE SUMMING BEAM MOUNTING MOUNTING CAM SCREW HOLE SCREW HOLE 1 The Span Adj Assy is made up of the range spring span adj shaft threaded rod and span adj knob 2 gt The Span Adj Assy features a red color coded range spring for a 6 to 30 psig input signal A mounting plate is used to mount the 3710 positioner to the f
Download Pdf Manuals
Related Search