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Rosemount 3051 Multivariable Differential Pressure Transmitter
The Rosemount 3051 is an industry-standard pressure transmitter engineered to deliver precise multi-variable measurement of differential pressure, static pressure, temperature, and flow. Featuring Emerson's proprietary Coplanar platform, it provides modular installation flexibility, robust long-term stability, and seamless integration into modern process automation systems.
Technical Specifications
| Feature | Specification |
| Model Type | Coplanar / Differential Pressure Transmitter |
| Measurement Range | 0.1 inH₂O to 4000 psi (0.25 bar to 276 bar) |
| Reference Accuracy | Up to ±0.04% of Upper Range Limit (URL) |
| Long-Term Stability | 10-year stability guarantee |
| Output Signal | 4–20 mA with HART Protocol or FOUNDATION Fieldbus |
| Power Supply | 10.5–36 VDC |
| Process Connection | 1/4–18 NPT or flanged modular options |
| Housing & Rating | Aluminum with NEMA 4X / IP66/67 enclosure |
Core Engineering Features
Multivariable Measurement: Simultaneously tracks differential pressure, line pressure, and process temperature to optimize loop efficiency.
Coplanar Platform: Streamlines direct mounting to manifolds, primary elements, and remote seal assemblies while reducing leak points.
Advanced Diagnostics: Local Operator Interface (LOI) and configuration software enable real-time loop testing, anomaly detection, and guided setup.
Rugged Durability: Engineered to withstand severe thermal extremes (-40 to 185°F) and corrosive industrial environments.
Primary Industrial Applications
Oil & Gas: Wellhead monitoring, high-pressure pipelines, and custody transfer separation.
Chemical & Petrochemical: Corrosive fluid processing and reactor pressure tracking.
Power Generation: Boiler feed water, steam systems, and condenser vacuum control.
Water & Wastewater: Filtration pressure monitoring and municipal pump station control.
Standard Installation Procedure
Preparation & Safety: Review technical manuals, verify nameplate specifications, and ensure safe line conditions.
Mechanical Mounting: Secure the coplanar transmitter to a rigid pipe or bracket in a vibration-isolated location using rated hardware.
Process Connections: Align impulse piping, utilize compatible gaskets, and torque flange bolts evenly to prevent leaks.
Electrical Wiring: Terminate shielded loop cables into the terminal compartment, maintaining correct polarity and earth grounding.
Configuration & Commissioning: Power the loop (10.5–36 VDC), perform zero trimming via HART or the LOI interface, and verify output signals.
Related Part Numbers & Alternatives
Rosemount 3051C: Standard Coplanar Pressure Transmitter variant.
Rosemount 3051CD: Dedicated Differential Pressure Transmitter for flow and filter monitoring.
Rosemount 3051CA: Absolute Pressure Transmitter variant for closed-vessel or vacuum service.
Rosemount 3051H: High-accuracy variant built for critical custody transfer applications.
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Rosemount 2090P Pressure Transmitter
Rosemount 3051DP Coplanar Transmitter Level Gauge
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