Emerson Rosemount 3051SFP Flow Meter

Emerson Rosemount 3051SFP Flow Meter

Product Overview

The Rosemount™ 3051SFP Integral Orifice Flow Meter represents Emerson’s premier multivariable flow measurement solution, engineered specifically for small line size applications ranging from 0.5 to 1.5 inches (15 to 40 mm)-2. Unlike conventional DP flow meters that require separate primary elements and complex impulse piping, the 3051SFP integrates an integral orifice primary element directly into the meter run assembly, delivering a compact, pre-configured, and leak-tested solution that installs straight out of the box-1.

This device is built on the proven Rosemount 3051S platform and incorporates built-in flow calculations for fully compensated mass flow, volumetric flow, and energy flow measurements without requiring external flow computers-2. The multivariable capability enables simultaneous measurement of differential pressure, static pressure, and process temperature through a single process penetration.

Available model configurations include 3051SFP1, 3051SFP2, 3051SFP3, 3051SFP4, 3051SFP5, 3051SFP6, 3051SFP7, and 3051SFPD series variants. Each 3051SFP model can be further customized with performance class options (Ultra, Ultra for Flow, or Classic) to match specific application accuracy requirements.

For those requiring SIL-rated installations, 3051SFP configurations are available with SIL 2/3 certification to IEC 61508, validated by independent third-party assessment and supported by FMEDA data for safety instrumented system integration-2.

Key Features

Integral Orifice Primary Element: The orifice plate is factory-installed within the meter body, eliminating field assembly errors and reducing installation labor. The 3051SFP’s integral design removes the need for separate impulse lines, minimizing plugging risks in dirty or viscous fluid applications-2.

Built-in Multivariable Flow Calculations: Onboard computational capabilities deliver direct reporting of mass flow, volumetric flow, and energy flow using differential pressure, static pressure, and process temperature inputs. The 3051SFP supports both compensated and uncompensated flow measurement modes-2.

Ultra for Flow Performance Class: Optional high-accuracy configuration delivers ±0.04% of reading accuracy, optimized specifically for flow measurement applications using DP ranges 2 and 3-1. The Ultra for Flow class also provides a 15-year stability specification, significantly reducing recalibration frequency.

All-Welded SuperModule™ Design: The sensor module is hermetically sealed and welded, providing superior protection against environmental extremes, humidity, and corrosive atmospheres. The SuperModule platform resists overpressure and line pressure effects, maintaining measurement integrity in harsh industrial environments-1.

Callendar-Van Dusen Sensor Matching: Factory characterization of the RTD temperature sensor improves temperature measurement accuracy, directly enhancing flow calculation precision. This feature is particularly valuable in applications with wide temperature variations-1.

Advanced Diagnostics Suite: Onboard diagnostics include loop integrity monitoring, process intelligence algorithms, and plugged impulse line detection. These capabilities enable predictive maintenance strategies and reduce unplanned downtime-2.

WirelessHART® Option: The wireless variant of the 3051SFP eliminates cabling costs while maintaining >99% data reliability. SmartPower™ modules provide up to 10 years of maintenance-free operation with field-replaceable design-2.

Complete Pre-configuration: Every 3051SFP is factory-configured, leak-tested, and ready for immediate installation upon delivery, accelerating project commissioning-1.

Technical Specifications

General Specifications

Measurement Capabilities

The 3051SFP simultaneously measures multiple process variables:

Differential pressure

Static pressure (absolute or gage)

Process temperature

Mass flow (fully compensated)

Volumetric flow

Energy flow

Scaled variable

Pressure Measurement Ranges

Flow Performance Specifications (Uncompensated)

The following flow accuracy data applies when the 3051SFP operates using DP readings without pressure and temperature compensation. Performance varies based on the beta ratio (β) of the integral orifice:

Note: The 3051SFP is available only with DP ranges 1, 2, and 3. The Lower Range Limit (LRL) is 0 inH₂O for Ultra for Flow performance class configurations-4.

Outputs and Communication

Process Wetted Materials

Diagnostics Suite

Basic Diagnostics

Loop Integrity

Process Intelligence

Plugged Impulse Line Detection

Environmental and Operating Conditions

Update Rate: 1 second to 60 minutes, user-selectable

Wireless Range: Long range (225 m), extended range (800 m), remote (225 m), high-gain remote (1 km)

Power Module Life (Wireless models): Up to 10 years, field-replaceable

Electronics Temperature Limits: Per 3051S platform specifications

Certifications and Approvals

SIL 2/3 certified to IEC 61508 (via independent third party)

FMEDA data for safety installations with prior-use certificate

NACE MR0175 / MR0103 certification

Hazardous location certifications (multiple approvals available—refer to full specification for complete list)

Stability and Reliability

Long-term Stability: Up to ±0.15% of URL for 15 years for Ultra and Ultra for Flow performance classes

SIL 2/3 Rating: Enables use in safety instrumented systems up to SIL 3 when properly configured

Ordering Code Breakdown

The complete model code defines every aspect of the instrument’s configuration, from performance class and pressure range to output protocol, materials, and certifications. A representative full model code is presented below for reference:

3051SFPDS010W3S0800D52AA1A3P1Q8J6Q4E1M5T1D1

This 3051SFP ordering code string specifies the following configuration:

Note: For exact interpretation of each code position, refer to the current Emerson Rosemount 3051S product data sheet, as code definitions may vary by revision and regional availability.

When specifying a 3051SFP, the complete ordering code must be verified against Emerson’s official range tables to confirm that the selected pressure range code aligns with the actual process requirements. Sensor range codes correspond to capability tables defining allowable lower and upper range limits, not fixed setpoint ranges-29.

Common 3051SFP Model Variants

Depending on application needs, alternative 3051SFP configurations may include:

3051SFP1xxxxx — Basic configuration for uncompensated flow

3051SFP3xxxxx — Multivariable configuration with pressure and temperature inputs

3051SFP4xxxxx — Extended diagnostics and performance options

3051SFPDxxxxx — Advanced multivariable with mass flow calculation

Applications

The Rosemount 3051SFP is ideally suited for small line size flow measurement across multiple industries:

Oil and Gas

Wellhead flow monitoring

Chemical injection metering

Small pipeline flow measurement

Uncompensated gas flow measurement

Chemical and Petrochemical

Reactor feed control

Additive injection systems

Solvent and catalyst flow monitoring

Power Generation

Boiler feedwater flow

Cooling water monitoring

Fuel gas measurement

General Industrial

Compressed air systems

Steam flow measurement (saturated)

Liquid flow in utility services

HVAC flow monitoring

The integral orifice design of the 3051SFP eliminates the need for straight pipe run requirements typically associated with conventional orifice plates, making it particularly effective in tight-fit retrofit applications where space is constrained-1.

Installation Considerations

Mounting Guidelines

For liquid flow applications using the 3051SFP, process taps should be placed to the side of the line, with the transmitter mounted beside or below the taps. Drain/vent valves must be oriented upward to ensure proper venting-48.

For gas flow applications, taps should be placed in the top or side of the line, with the transmitter mounted beside or above the taps to prevent condensate accumulation.

For steam flow applications, taps should be placed to the side of the line, with the transmitter mounted beside or below the taps. Impulse lines must be filled with water prior to operation to establish proper condensate legs.

Direct Mount Installation

The 3051SFP supports direct mount installation, where the flow meter mounts directly into the pipe with connections to the transmitter made using standard pipe fittings. This configuration eliminates impulse lines entirely, reducing the risk of plugging, freezing, or measurement lag-.

Certifications and Compliance

The Rosemount 3051SFP is manufactured under ISO 9001-certified processes. Key certifications available for 3051SFP configurations include:

SIL 2/3 to IEC 61508 — Suitable for safety instrumented systems up to SIL 3 with appropriate proof test intervals

NACE MR0175 / MR0103 — For H₂S service in oil and gas applications

ATEX, IECEx, FM, CSA — Hazardous location approvals for Zone 0, Zone 1, Zone 2, and Class I, Division 1/2 environments

PED — Pressure Equipment Directive compliance for European markets

Complete certification details vary by ordering code selection. Consult the full Emerson Rosemount 3051SFP product data sheet for country-specific approvals.