The Rosemount 3051CFP measures flow using the differential pressure created as fluid passes through an orifice plate. The integrated plate and meter run are designed to address alignment and internal pipe diameter variations that can affect measurement accuracy in small line sizes.

The transmitter converts differential pressure into a flow measurement signal. Depending on the selected configuration, it can also provide flow-specific calculations and totalization, allowing operators to monitor flow rate and accumulated flow.

Key Features

• Integrated orifice design: Combines the orifice plate and meter run to simplify installation.
• Small-pipe measurement: Designed for line sizes from 0.5 to 1.5 inches (15–40 mm).
• Self-centering orifice plate: Helps reduce alignment-related measurement errors.
• Preassembled flow assembly: Factory leak-tested and calibrated to simplify installation and reduce potential leak points.
• Flow totalization: Optional flow-specific configuration supports flow rate and totalized flow display.
• Wide turndown: Up to 150:1 rangedown, depending on configuration and application.
• Long-term stability: Emerson specifies 10-year installed stability.
• Digital communication: Options include HART, WirelessHART, FOUNDATION Fieldbus, PROFIBUS PA, and other configuration-dependent interfaces.
• Bluetooth connectivity: Available for convenient configuration and maintenance.
• Local display: Optional graphical, backlit display with multilingual operation.
• Diagnostics: Optional loop integrity and plugged impulse line diagnostics.
• Safety certification: SIL 2/3 certification to IEC 61508 is available for specified configurations.

Suitable Applications

• Chemical processing: Flow monitoring of compatible process fluids in small-bore pipelines.
• Oil and gas: Differential-pressure flow measurement in suitable process and utility lines.
• Power generation: Monitoring flow in auxiliary systems and process piping.
• Industrial utilities: Measuring compatible liquid, gas, or steam flows when properly sized and configured.
• Process control systems: Providing flow measurement signals to distributed control systems (DCS) or programmable logic controllers (PLC).
• Compact installations: Applications where an integrated orifice assembly can simplify installation and reduce separate primary-element components.

The appropriate fluid, pressure, temperature, and flow range must be confirmed through application sizing.

Technical Highlights & Selection Considerations

Before ordering the Rosemount 3051CFP, verify the following:

• Line size: Available nominal sizes include 0.5, 1, and 1.5 inches (15, 25, and 40 mm).
• Fluid properties: Provide the fluid type, density, viscosity, operating temperature, and pressure.
• Flow range: Confirm minimum, normal, and maximum flow rates to ensure the selected differential-pressure range is suitable.
• Pressure and temperature ratings: Check the complete assembly's limits for the actual operating conditions.
• Process connections: Specify the required pipe-end or flange configuration, pressure class, and connection materials.
• Output and communication: Select the required HART, WirelessHART, fieldbus, or other supported communication option.
• Display and totalizer: Confirm whether local flow indication, totalized flow, or Bluetooth setup is needed.
• Diagnostics and safety: Specify required diagnostic functions and safety approvals for the installation.
• Configuration code: Confirm the full model and option code, since performance, materials, and available features depend on the selected configuration.

Important: The 3051CFP is a differential-pressure flow meter, not a universal inline flow sensor. Correct sizing depends on the fluid properties, line conditions, orifice configuration, and required flow range. Consult the manufacturer’s sizing tools and datasheet before final selection.

FAQ

Q1: What is the Rosemount 3051CFP used for?

It measures flow in small pipelines using the differential pressure generated across an integrated orifice plate.

Q2: What pipe sizes are supported?

The product is designed for nominal line sizes from 0.5 to 1.5 inches (15–40 mm), with specific sizes and connections selected through the order code.

Q3: What is the advantage of the integral orifice design?

The integrated, self-centering orifice plate and precision meter run simplify installation and help reduce alignment-related errors and potential leak points.

Q4: Can the 3051CFP measure totalized flow?

Yes. Flow-specific configuration options can provide flow rate and totalized flow functions. Confirm the necessary configuration when ordering.

Q5: What information is needed to select the correct model?

Provide the fluid type, minimum and maximum flow rates, operating pressure and temperature, line size, process connections, output protocol, and required display or safety options.