Related Manuals for Flowserve NT3000 Series
Summary of Contents for Flowserve NT3000 Series
- Page 1 USER INSTRUCTIONS NT3000 Series Installation Electro-Pneumatic Transducer Module Operation Maintenance FCD VLENIM0047-05 – 07/10 Experience In Motion...
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Page 2: Table Of Contents
NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 Contents General Information Transducer Operation Converting Positioner Input Signal Calibration Adjusting the Pressure Regulator Output Adjusting the Pressure Modulator Maintenance Inspection and Replacement of the Transducer Orifice Service and Replacement of the Transducer Filter Service and Replacement of the Transducer Vent Element (not applicable for vented model) Service and Maintenance of the Transducer Circuit Board... -
Page 3: General Information
This bulletin is designed to assist in installing, calibrating, trouble- Intrinsically Safe: See Figure 1 NEMA Type 4X shooting and performing maintenance as required for the Flowserve Class I, Div. 1, Groups A, B, C, D Valtek NT 3000 series electro-pneumatic transducer. -
Page 4: Transducer Operation
Figures 4 or 5 and proceed as follows. 6.1 V while the impedance varies between 1330 ohms and 270 ohms. Flowserve recommends an operating voltage of 6.5 VDC (i.e., the DCS NOTE: Although calibration can be accomplished using the output system should allow for at least 6.5 V loop load across the NT 3000... - Page 5 = 2 µH Figure 2 – NT 3000 Transducer Schematic Figure 3 – NT 3000 Transducer Orifice Screw 4-20 mA Diaphragm Input Flapper Circuit Board Pressure Pressure Modulator Sensor 3-15 psi Output Gauge Supply Internal Regulator Replaceable Filter Element flowserve.com...
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Page 6: Adjusting The Pressure Regulator Output
NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 Adjusting the Pressure Adjusting the Pressure Modulator Regulator Output The pressure modulator is factory set and normally does not need adjustment; however, if adjustment is necessary refer to Figures 6 and The setpoint of the internal pressure regulator is set at the factory 7, proceed as follows. - Page 7 Zero Adjustment Knob Range Arm Zero Adjustment Locking Knob Range Adjustment Locking Screw Range Adjustment Gear Zero Span Adjustment Adjustment Grounding Vent Screen Screw Instrument Signal Feedback Capsule Spring Mounting Screws Current Loop Current Loop Terminal Block Termination (+) Termination (-) flowserve.com...
- Page 8 NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 Figure 5 – XL Positioner with NT 3000 Transducer Zero Arm Zero Adjustment Knob Range Arm Zero Adjustment Locking Knob Range Adjustment Locking Screw Range Adjustment Gear Zero Span Adjustment Adjustment Grounding Vent Screen...
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Page 9: Maintenance
To check or replace filter, refer to Figure 8 and proceed as follows: 1. Disconnect air supply pressure to the positioner. 2. Remove the filter cover (24) from the housing (45), being careful not to damage the O-ring (23). flowserve.com... -
Page 10: Service And Maintenance Of The Transducer Circuit Board
NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 Figure 7 – NT 3000 Transducer Pressure Modulator (circuit board removed) Pressure Sensor Port Modulator Screw Pressure Modulator Assembly Setscrew Service and Maintenance of the 5. Disconnect the pressure modulator (11) electrical connector from the bottom of the circuit board. -
Page 11: Disassembly And Reassembly Of The Transducer Pressure Regulator
-inch socket wrench, remove the poppet guide screw tions as outlined in the “Adjusting Pressure Regulator Output” (30), its O-ring (29), the regulator poppet (28) and the poppet section of this manual. spring (27). 15. Reconnect the air supply to the positioner. flowserve.com... -
Page 12: Removal And Replacement Of The Transducer Pressure Modulator
NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 Removal and Replacement of the Transducer Pressure Modulator Removal and replacement of the NT 3000 pressure modulator should only be performed by a certified service center. Figure 8 – NT 3000 Transducer, Exploded View Exploded View of Circuit Board and Housing Fasteners Terminal Block... -
Page 13: Parts List
Regulator setscrew Flame arrestor Pressure gauge (0-30 psi) I/P to positioner housing air connection O-rings Orifice O-ring Vent cover screws Orifice screw O-ring Vent cover Orifice screw Vent element Transducer housing Filter Sensor O-ring O-ring O-ring retainer Filter cover flowserve.com... -
Page 14: Spare Part Kits
NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 Spare Part Kits Kit 1 – Regulator Assembly Kit 4 – Vent Element PN 138727.999.000 PN 098335.999.000 Item Description Quantity Item Description Quantity Poppet Spring Vent Cover Screws Regulator Poppet Vent Cover Poppet Guide O-ring Vent Element... -
Page 15: Standard Explosion Proof Emi / Rfi Wiring Installation Procedures (Using Conduit)
NT 3000 transducer and within six feet of any radios or microwave the source power supply or other contamination. Any noise generated sources. The conduit system includes an aluminum fitting at the NT at the source can affect the NT 3000 transducer. 3000 transducer. flowserve.com... -
Page 16: Troubleshooting
NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 Troubleshooting Failure Probable Cause Corrective Action 1. Supply pressure is low or not connected properly 1. Set supply pressure to recommended value 2. Pressure gauge is faulty 2. Replace gauge Transducer output is less than 1.5 psig with 3. -
Page 17: Nt 3000 Model Numbers
(Standard) Buna-N, Fluorosilicone / -40° to +185°F (-40° to +85°C) Soft Goods / Temperature Viton / -20° to +185°F (-29° to +85°C) EPDM / -40° to +185°F (-40° to +85°C) 1/2" NPT Conduit Connection Non-Vented Vent Vented White Black Paint Food Grade No paint (Stainless steel) flowserve.com... -
Page 18: Adjusting The Minimum Pressure Cutoff Feature On Old Transducers
NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 Adjusting the Minimum Pressure This signal can range from the factory setting of 3.7 to 8 mA. See Figure 11. Cutoff Feature on Old Transducers 4. Turn the minimum pressure cutoff pot clockwise until the output Older models of the NT 3000 Transducer have a “Minimum Pressure pressure drops off. - Page 19 NT 3000 Series Electro-Pneumatic Transducer Module FCD VLENIM0047-05 - 01/10 This page is intentionally blank. flowserve.com...
- Page 20 Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions.