Rosemount 3051 Pressure Transmitter

Overview

The Emerson Rosemount 3051 Pressure Transmitter family sets a benchmark for reliable pressure measurement across differential (DP), gauge (GP), and absolute (AP) applications. Built on Emerson’s robust architecture, 3051 transmitters combine high accuracy, fast step response, and outstanding long-term stability, making them a favorite for flow (with primary elements), level (wet/dry leg), density/DP and general pressure duties in oil & gas, chemicals, power generation, water & wastewater, marine and utilities. Standard output is 4–20 mA with HART® for universal DCS/PLC integration; digital protocols are available on related 3051 variants if your architecture requires them.
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Key Benefits

• Accuracy & stability you can trust: Tight reference accuracy and excellent long-term stability reduce recalibration intervals and lifecycle cost.

• Fast dynamics: Quick response supports tighter control on flow and steam loops.

• Versatile measurement types: Configure as DP for flow/level/density, GP for line pressure, or AP for absolute pressure.

• Broad range & materials: Multiple capsule ranges, wetted materials and process connections suit harsh media and temperature/pressure envelopes.

• Seamless integration: 4–20 mA + HART fits legacy and modern systems; diagnostics aid loop checks and maintenance.

• Scalable platform: From basic pressure duty to advanced assemblies with remote seals and local displays—3051 adapts to your spec.

Typical Applications

• Flow measurement (DP): Pair with orifice/venturi/Annubar/averaging pitot tubes; enable square-root extraction in the DCS/flow computer for volumetric/mass flow.

• Level on pressurized vessels: Wet/dry leg DP configurations for columns, drums and tanks (including steam and condensate service).

• Line pressure (GP) and absolute pressure (AP) in process and utilities.

• Density/DP monitoring for separators and process optimization.

Communication & Integration

• Output: 4–20 mA DC with HART® (standard).

• Device diagnostics: Advanced device/status diagnostics via HART help identify loop issues or plugged impulse lines (availability by model/options).

• Digital ecosystems: If your site requires FOUNDATION™ Fieldbus / PROFIBUS® PA, specify the appropriate 3051 variant; we’ll validate codes.

Construction, Ranges & Materials

• Capsule ranges: Wide selection from low DP up to high ranges for steam/HP gas.

• Wetted materials: Stainless steels and optional corrosion-resistant alloys to match medium.

• Process connections: NPT/Threaded, flanged, and remote seals (single/dual capillary) for hot, viscous or plugging services.

• Local indicator: Optional display for on-site commissioning and live variables.

Installation & Commissioning Tips

• Impulse lines: Keep runs short and symmetrical for DP flow; slope toward the transmitter on liquid service and away on gas service to avoid condensate pooling.

• Wet leg care (level): Use compatible fill fluid and keep temperature exposure consistent; insulate where needed to minimize drift.

• Square-root extraction: Decide whether to apply √ in transmitter, DCS or flow computer (e.g., FloBoss S600+ یا ABB Flow-X)—we can align with your metering standard.

• Damping & filtering: Set damping to smooth noise but preserve control responsiveness; verify update rate in the host.

Why Seven Star LLC

• Genuine Emerson supply with quick lead times.

• Model code guidance: We help choose capsule/range, wetted materials, process connections, remote seals and approvals.

• Commissioning support: HART setup, scaling, damping and loop checks; flow/level strategy alignment with your DCS or flow computer.

• Documentation pack: Datasheets, material certificates and wiring notes on request.

FAQ

Q1: What measurement forms are available on the 3051?

DP (differential), GP (gauge) and AP (absolute). Tell us your service and range; we’ll pick the right capsule and code.

Q2: Does it support 4–20 mA + HART?

Yes. 4–20 mA with HART is standard; digital variants (FOUNDATION Fieldbus/PROFIBUS PA) exist in the family.

Q3: Can it be used for steam flow and wet-leg level?

Absolutely—3051 is widely applied in steam service and wet/dry-leg level with the right impulse-line/condensate practices.

Q4: Do you supply remote seals and accessories?

Yes—single/dual remote seals, capillaries, manifolds and local indicators per your process.

Q5: Where should square-root be applied?

Either in the transmitter, DCS or flow computer. We’ll match your control philosophy and metering standard.

Q6: What if I need corrosion-resistant wetted parts?

Specify the medium and conditions; we’ll recommend suitable alloys or seal systems.

Call to Action

Request a quote—Share your medium (liquid/gas/steam), DP/pressure range, process temp/pressure, wetted material, process connection, display/remote-seal need and protocol. We’ll validate the exact 3051 build, confirm lead time, and ship with the right accessories.