Emerson Process Management 3051N Process Connections Housing Rotation, Electrical Considerations

Page 46

Rosemount 3051N

Reference Manual

00809-0100-4808, Rev CA June 2008

Process Connections

Housing Rotation

ELECTRICAL CONSIDERATIONS

Power Supply

Rosemount 3051N connections on the transmitter flange are 1/4–18 NPT. Use your plant-approved lubricant or sealant when making the connections. The end-user is responsible for the qualification of the threaded seal interface on the transmitter’s 1/4-18 NPT connections.

Do not attempt to loosen or remove the flange bolts while the transmitter is in service.

The electronics housing can be rotated up to 180 degrees (left or right) to improve field access or to better view the optional LCD meter. To rotate the housing, perform the following procedure:

1.Loosen the housing rotation set screw using a 9/64-in. hex wrench.

2.Turn the housing up to 180 degrees to the left or right of its original (as shipped) position. Do not rotate the housing more than 180 degrees.

Over-rotation will sever the electrical connection between the sensor module and the electronics module.

3.Retighten the housing rotation set screw.

The transmitter terminal block is in the compartment of the electronics housing labeled “FIELD TERMINALS.” The other compartment contains the transmitter electronics module. Connections for the HART-based communicator are attached beneath the terminal screws on the terminal block. Figure 3-7shows power supply load limitations for the transmitter.

4–20 mA Transmitters

The dc power supply should provide power with less than 2 percent ripple. The total resistance load is the sum of the resistance of the signal leads and the load resistance of the controller, indicator, and related pieces. Note that the resistance of intrinsic safety barriers, if used, must be included.

NOTE

A minimum loop resistance of 250 ohms is required to communicate with a HART-based communicator. With 250 ohms of loop resistance, the transmitter will require a minimum of 16 volts to output 20 mA. If a single power supply is used to power more than one Rosemount 3051N transmitter, the power supply used, and circuitry common to the transmitters, should not have more than 20 ohms of impedance at 1200 Hz. For additional details, see Figure 3-7 "Power Supply Load Limitations."

See “Safety Messages” on page 3-1for warning information.

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Contents Reference Manual Page Rosemount 3051N Return of Material Old Changes from June 2006 to JuneChanges Rosemount 3051N Table of Contents Troubleshooting InstallationSpecifications Reference Data Appendix a OptionsHart Communicator Glossary Index Using this Manual Section IntroductionRosemount 3051N Overview Safety Messages Transmitter FunctionsTransmitter Alarm Level VerificationSecurity Configuring Transmitter Alarm and Security Jumper Procedure Physical Removal Local Zero and Span Local KeysElectronics Board Setting the Loop to Manual Wiring Diagrams Bench Hook-up Wiring Diagrams Field Hook-up Check Output Review Configuration DataProcess Variables Set Process Variable Units Sensor TemperatureBasic Setup Set OutputRerange Rerange with a Communicator OnlyRerange with a Pressure Input Source and a Communicator Span and Zero Adjustment Buttons Detailed Setup Diagnostics ServiceLoop Test Transmitter TestCalibration Transmitter Bench Calibration Tasks Field Calibration Tasks Configure the Analog Output Parameters Calibration OverviewSensor Trim URVZero Trim Typical Zero vs Non-zero-Based Application IllustrationsFull Trim Digital Trim Connection Drawing 4-20 mA TransmittersRecall Factory Trim- Analog Output Digital-to-Analog Trim Using Other ScaleRecall Factory Trim Recall Factory Trim- Sensor Trim Analog Output TrimZero Effect HTc = URV + S URV Ps Rosemount 3051N Section Installation Rosemount 3051N Typical Installation Flowchart Special Draft Range Considerations General ConsiderationsMechanical Considerations 156 181 16 x 11/4 Bolts for Mounting to 54.1 Transmitter 120 127 66.8 Traditional Flange Option Code H2 Dimensional Drawing Mounting Rosemount 3051N GAS or Liquid Service GAS Service Steam Service Power Supply Process Connections Housing RotationElectrical Considerations Wiring Power Supply Load LimitationsGrounding the Transmitter Case Access Requirements Cover InstallationEnvironmental Considerations Troubleshooting Symptom Corrective Actions Returning Rosemount Products and MaterialsNuclear Specifications SeismicModel Range Code Hydrostatic Test Pressure Reference Accuracy Performance SpecificationsAmbient Temperature Effect12 DriftRange Code Overpressure Effect Power Supply Effect Load Effect Mounting Position EffectOverpressure Effect Static Pressure Effect Range Code Static Pressure Zero Effect1Temperature Limits Functional SpecificationsService OutputRange Minimum Span Upper URL Lower LRL Span and Zero, Zero Elevation, SuppressionRange Code Minimum Time Constant Tc Including Dead Time Td Static Pressure Limits Maximum WorkingPressure12 Overpressure Limits Burst PressurePhysical Specifications Materials of Construction Option Code Description Add Ordering Information Mounting Bracket Options Configuration InformationHousing Material Conduit Entry Size Meters optionalDate  On Rosemount 3051N Exploded View with Coplanar Process Flange Rosemount 3051N Rosemount 3051N Overview Safety Messages LCD Meter Section OptionsCustom Meter Configuration Installing the Meter Exploded View of the Rosemount 3051N with Optional LCD MeterRosemount 3051N Diagnostic Messages ErrorPress Limit Operation Mounting BracketsTraditional Flange H2 Transient Protection Terminal Block T1Transient Protection Terminal Block T1 Rosemount 3051N Introduction Safety Messages Appendix a Hart CommunicatorRosemount 3051N Online Menu Function Hart Fast Key Sequence Figure A-3. Rosemount Hart terminal access door Connections and HardwareFigure A-4. Bench Hook-up MA Transmitters Communicator Keys RosemountAction Keys Alphanumeric and Shift Keys Function KeysData Entry Menus Functions Fast Key SequencesFast Key Sequence Conventions Fast Key Sequence Example Main MenuOnline Menu Touch Touch Screen Alphanumeric KeysMultifunction LED Multifunction LED Processing IndicationRosemount 3051N Fast Key Sequences Hot Key options Diagnostic MessagesMessage Description Rosemount 3051N Uploadvariable Rosemount 3051N Rosemount 3051N Glossary Smart Family Index 00809-0100-4808, Rev CA June Security Page ¢00809-0100-4801V¤

3051N specifications

The Emerson Process Management 3051N is a state-of-the-art pressure transmitter that exemplifies precision and reliability in process automation. Designed for a wide range of industrial applications, the 3051N is celebrated for its advanced features, innovative technologies, and robust construction, catering to the evolving needs of process industries.

One of the standout features of the 3051N is its exceptional accuracy. With a standard accuracy rating of ±0.075% of span, it ensures precise pressure measurements, critical for maintaining optimal process conditions. This high level of accuracy makes it suitable for applications in industries such as oil and gas, chemicals, and water treatment, where even minor deviations can lead to significant operational issues.

The 3051N employs Smart Pressure Technology, integrating digital communication capabilities with traditional analog systems. This technology allows for seamless interoperability with existing process control systems, providing users with vital data for diagnostics, calibration, and configuration via HART, FOUNDATION fieldbus, or Profibus protocols. These capabilities lead to enhanced process efficiency and reduced downtime due to effective predictive maintenance.

Another notable characteristic of this transmitter is its robust design. The 3051N is built to endure harsh industrial environments, with a rugged housing that is resistant to corrosive and hazardous conditions. Its wide operating temperature range, typically from -40°C to 85°C, coupled with various diaphragm materials, ensures that it can function effectively across diverse applications.

Moreover, the Emerson 3051N incorporates advanced predictive diagnostics, enabling users to monitor the health of the transmitter continuously. This feature alerts operators to potential issues before they escalate, facilitating proactive maintenance strategies that can significantly lower operational costs.

The flexible configuration options offered by the 3051N also enhance its usability. Users can select from a variety of pressure ranges, process connection types, and electrical connections, making it easy to customize the transmitter to fit specific application needs.

In conclusion, the Emerson Process Management 3051N pressure transmitter is a versatile and highly efficient device that integrates advanced technology with robust design and exceptional accuracy. Its ability to adapt to various industrial demands while providing predictive diagnostics makes it a preferred choice for professionals seeking reliability and precision in process management.
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