Emerson Fisher 3710 Data Sheet D200437X012_Feb15_AQ
2015-03-30
: Emerson Emerson-Fisher-3710-Data-Sheet-681682 emerson-fisher-3710-data-sheet-681682 emerson pdf
Open the PDF directly: View PDF 
.
Page Count: 12
| Download | |
| Open PDF In Browser | View PDF |
Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Fisherr 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 doubleacting for rotary actuators. SUPPLY CONNECTION W6144 FISHER 3720 POSITIONER MOUNTED ON A 1052 ACTUATOR SUPPLY CONNECTION EXTERNAL GROUNDING SCREW W6058-1 FISHER 3710 POSITIONER MOUNTED ON A 1066 ACTUATOR www.Fisher.com W6145 1/2 NPT OR M20 CONDUIT CONNECTION FISHER 3722 ELECTRO-PNEUMATIC CONVERTER Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Specifications 3720:. 6mm Spool Valve: 1.0 normal m3/hr (36 scfh) at 4.1 bar (60 psig) supply pressure Available Configuration 3710: J Single- or J double-acting pneumatic rotary valve positioner 3720: J Single- or J 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) signal for the pneumatic positioner 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(5) Input Signal 3710:. Standard: J 0.2 to 1.0 bar (3 to 15 psig) or J 0.4 to 2.0 bar (6 to 30 psig) Split-Range: J 0.2 to 0.6 bar (3 to 9 psig) and 0.6 to 1.0 bar (9 to 15 psig) or J 0.4 to 1.2 bar (6 to 18 psig) and 1.2 to 2.0 bar (18 to 30 psig) 3720:. Standard: J 4-20 mA DC constant current with 30 VDC maximum compliance voltage Split-Range: J 4-12 mA DC or 12-20 mA DC 3710 Pneumatic Positioner Independent Linearity: ±0.5% of output span Hysteresis: 0.5% 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 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(1): Field reversible between direct and reverse Note: Electromagnetic Compatibility specifications also apply to the 3720 positioner Operating Influences 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 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 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 Operative Temperature Limits(2) J -40 to 80_C (-40 to 180_F), J -50 to 107_C (-58 to 225_F) Construction Materials 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 Positioner Base: Low copper aluminum alloy Cover: Polyester plastic Feedback Shaft: Stainless steel Range Spring: Stainless steel -continued- 2 Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Specifications (Continued) Construction Materials (continued) Input Module Diaphragm, O-rings: J Nitrile or J 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: J Stainless steel or J 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 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 Meets Customs Union technical regulation TP TC 012/2011 for Groups II/III Category 2 equipment II Gb c T*X III Db c T*X Note: These ratings do not apply to the 3720 positioner Pressure Connections 1/4 NPT internal Electrical Connection for 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 1/2-14 NPT conduit connection Rotary Valve Rotation J 90 degrees (standard) J 60 degrees (optional) Options Span Adjuster Assembly: J 0.2 to 1.0 bar (3 to 15 psig) input range or, J 0.4 to 2.0 bar (6 to 30 psig) input range Elastomers (O-rings, diaphragm): J standard temperature range, -40 to 80_C (-40 to 180_F), J extended temperature range -50 to 107_C (-58 to 225_F) J Special applications, J Beacon indicator, J Gauges(6), 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 input signal retracts actuator rod. 2. The pressure and temperature limits in this document and any applicable standard or code limitation should not be exceeded. 3. Natural gas should not contain more than 20 ppm of H2S. 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 supply pressures. 6. Gauges not available for high temperature range. 3 Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Table 1. Fisher 3722 Electro-Pneumatic Converter(1) EMC Summary Results—Immunity Port Enclosure Phenomenon Electrostatic Discharge (ESD) IEC 61000-4-2 Radiated EM field IEC 61000-4-3 Rated power frequency magnetic field Burst (fast transients) I/O signal/control Basic Standard Test Level 4 kV contact; 8 kV air 80 to 1000 MHz @ 10V/m with 1 kHz AM at 80% 1400 to 2000 MHz @ 3V/m with 1 kHz AM at 80% 2000 to 2700 MHz @ 1V/m with 1 kHz AM at 80% Performance Criteria(2) A A IEC 61000-4-8 60 A/m at 50 Hz A A IEC 61000-4-4 1 kV 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 n Accurate, Fast Response—3710 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. n Modular Construction—The 3710 positioner converts easily to a 3720 positioner by adding the 3722 electro-pneumatic converter. The converter 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. n 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. 4 n 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. n 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. n 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. n Stable Operation—Changes in supply pressure and ambient temperature have minimal effect on positioner operation. n Control Valve Diagnostic Testing Capability—To support diagnostic testing 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. n Valve Position Indicator—Standard, low-profile indicator or optional, beacon-style indicator mount easily to the positioner cover. Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Figure 1. Features and Adjustments NAMEPLATE AREA 1 2 SPAN ADJ ASSY ACTION BLOCK MOUNTING SCREW HOLE SCREENED VENT OPENING SPOOL VALVE ZERO ADJ PIVOT INPUT MODULE SPAN ADJ SHAFT (THREADED ROD) ZERO ADJUSTER LOCK NUT ZERO ADJUSTER SUMMING BEAM FEEDBACK ARM ASSEMBLY MOUNTING SCREW HOLE CAM MOUNTING SCREW HOLE Notes: 1 The Span Adj Assy is made up of the range spring, span adj shaft (threaded rod) and span adj knob. 2 The Span Adj Assy features a red color-coded range spring for a 6 to 30 psig input signal. W5947 Actuators A mounting plate is used to mount the 3710 positioner to the following Fisher actuators: The positioner mounts integrally to the actuator cover plate (figure 2) of the following Fisher actuators: n 1031, size 26, 33, 45, 60, and 80 n 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. n 1032, size 45, 70, 185, 280, 425, 680, 1125, 1370, 2585, and 4585 n 1051, size 33 n 1052, size 20, 33 n 1051, size 40 and 60 n 1052, size 40, 60, and 70 n 1061, size 30, 40, 60, and 68 n 1061, size 80, 100 n 1066, size 20, 27, and 75 n 2052, size 1, 2, and 3 5 Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Figure 2. Mounting the Positioner Base Plate MOUNTING SCREW FEEDBACK SHAFT W6059 MOUNTING 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. 6 TIE BAR EXTENSION POSITIONER MOUNTING PLATE 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 February 2015 D200437X012 Figure 3. Fisher 3710 Positioner Schematic INPUT SIGNAL PRESSURE INPUT MODULE SUMMING BEAM PIVOT SPOOL VALVE FEEDBACK SPRING A B SUPPLY SPAN ADJ CAM PIVOT FEEDBACK LEVER ZERO ADJ PIVOT OUTPUT B PISTON ACTUATOR A5944-1 Figure 4. Cam OUTPUT A 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 7 Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Figure 5. Dimensions and Connections BODY PROTECTOR BODY PIPE BUSHING 84.0 (3.31) PIPE TEE 50.5 (1.99) 1/4-18 NPT OUTPUT CONN (A) PLUGGED ON SINGLE ACTING 41.8 (1.65) PIPE NIPPLE DIAGNOSTIC CONNECTOR 12B8055-A B2385 1/4-18 NPT INSTR CONN 1/4-18 NPT OUTPUT CONN (B) 1/4-18 NPT SUPPLY CONN 48.0 (1.89) 167.9 (6.61) 70.3 (2.77) 45.2 (1.78) 68.7 (2.70) 41.8 (1.65) 167.9 (6.61) 132.6 (5.22) A5945-1 132.6 (5.22) 146.1 (5.75) 11B5496-A A6149-1 8 39.6 (1.56) mm INCH Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Ordering Information 6. Ambient temperature range When ordering, specify: 7. Special application material requirements such as EPDM elastomers Required Application Information 8. Supply pressure regulator and options such as gauges or tire valves, if required 1. Positioner type number 9. Connectors for diagnostic testing, if required 2. Pneumatic or DC current input signal range 3. Direct- or reverse-acting 4. Actuator type, size, and degrees of rotation 5. Maximum supply pressure available 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. 9 Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Table 2. Hazardous Area Classifications for Fisher 3722 Electro-Pneumatic Converter(1)—CSA (Canada) Certification Body CSA Certification Obtained Intrinsically Safe Ex ia IIC T4/T5/T6 per drawing GE28591 Ex ia Intrinsically Safe Class I, II Division 1 GP A,B,C,D,E,F,G T4/T5/T6 per drawing GE28591 Explosion-proof Ex d IIC T5 Class I, Division 1, GP A,B,C,D T5 Type n Ex nA IIC T6 Class I, Division 2, GP A,B,C,D T6 Class II, Division 1, GP E,F,G T5 Entity Rating Vmax = 30 VDC Imax = 150 mA Pi = 1.25 W Ci = 0 nF Li = 0 mH Temperature Code T4 (Tamb ≤ 82°C) T5 (Tamb ≤ 62°C) T6 (Tamb ≤ 47°C) --- T5 (Tamb ≤ 82°C) --- T6 (Tamb ≤ 82°C) T6 (Tamb ≤ 82°C) --- Class II, Division 2, GP F,G T6 T5 (Tamb ≤ 82°C) T6 (Tamb ≤ 82°C) 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 Intrinsically Safe Class I Zone 0 AEx ia IIC T4/T5/T6 per drawing GE28590 Class I, II, III Division 1 GP A,B,C,D,E,F,G T4/T5/T6 per drawing GE28590 FM Explosion-proof Class I Zone 1 AEx d IIC T5 Class I, Division I, GP A,B,C,D T5 Type n Class I Zone 2 AEx nA IIC T5 Class I, Division 2, GP A,B,C,D T5 Class II, Division 1, GP E,F,G T5 Class II, Division 2, GP F,G T5 Entity Rating Vmax = 30 VDC Imax = 150 mA Pi = 1.25 W Ci = 0 nF Li = 0 mH Temperature Code T4 (Tamb ≤ 82°C) T5 (Tamb ≤ 62°C) T6 (Tamb ≤ 47°C) --- T5 (Tamb ≤ 82°C) --- T5 (Tamb ≤ 82°C) --- T5 (Tamb ≤ 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 II 1 G & D Intrinsically Safe Gas Ex ia IIC T4/T5/T6 Ga Dust Ex ia IIIC Da T120°C (Tamb ≤ 82°C) / T100°C (Tamb ≤ 62°C) / T85°C (Tamb ≤ 47°C) Ui = 30 VDC Ii = 150 mA Pi = 1.25 W Ci = 0 nF Li = 0 mH T4 (Tamb ≤ 82°C) T5 (Tamb ≤ 62°C) T6 (Tamb ≤ 47°C) --- II 2 G & D ATEX Flameproof Gas Ex d IIC T5 Gb Dust Ex tb IIIC Db T82°C (Tamb ≤ 79°C) II 3 G & D Type n Gas Ex nA IIC T6 Gc Dust Ex tc IIIC Dc T85°C (Tamb ≤ 82°C) 1. These hazardous area classification also apply to 3720 positioners. 10 T5 (Tamb ≤ 82°C) ----- T6 (Tamb ≤ 82°C) ----- Product Bulletin 3710 and 3720 Positioners 62.1:3710 February 2015 D200437X012 Table 5. Hazardous Area Classifications for Fisher 3722 Electro-Pneumatic Converter(1)—IECEx Certification Certification Obtained Intrinsically Safe Gas Ex ia IIC T4/T5/T6 Ga IECEx Flameproof Gas Ex d IIC T5 Gb Type n Gas Ex nA II T6 Gc Entity Rating Ui = 30 VDC Ii = 150 mA Pi = 1.25 W Ci = 0 nF Li = 0 mH Temperature Code T4 (Tamb ≤ 82°C) T5 (Tamb ≤ 62°C) T6 (Tamb ≤ 47°C) --- T5 (Tamb ≤ 82°C) --- T6 (Tamb ≤ 82°C) 1. These hazardous area classification also apply to 3720 positioners. 11 Product Bulletin 62.1:3710 February 2015 3710 and 3720 Positioners 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, 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, Iowa 50158 USA Sorocaba, 18087 Brazil Chatham, Kent ME4 4QZ UK Dubai, United Arab Emirates Singapore 128461 Singapore www.Fisher.com E 121991, 2015 Fisher Controls International LLC. All rights reserved.
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : Yes XMP Toolkit : Adobe XMP Core 5.4-c005 78.147326, 2012/08/23-13:03:03 Format : application/pdf Creator : - Title : D200437X012_Feb15_AQ Create Date : 2015:01:29 08:33:11-06:00 Creator Tool : BroadVision, Inc. Modify Date : 2015:01:29 08:33:59-06:00 Metadata Date : 2015:01:29 08:33:59-06:00 Producer : Acrobat Distiller 11.0 (Windows) Document ID : uuid:d1985d7d-6239-4d89-b44e-6c2627c59649 Instance ID : uuid:f2f42502-cb67-4467-ba80-4dc0ac33dced Page Count : 12 Author : -EXIF Metadata provided by EXIF.tools