The Rosemount™ 2051CFA Annubar™ Flow Meter is an integrated differential pressure flow measurement solution designed for accurate measurement of gas, liquid, and steam applications. It combines the proven Rosemount 2051 pressure transmitter with patented Annubar™ averaging pitot tube technology to provide reliable flow measurement through a single pipe penetration.

With its compact sensor design, low permanent pressure loss, and multiple communication options, the Rosemount 2051CFA helps reduce installation complexity while improving process efficiency. It is widely used in industrial flow monitoring, energy management, and process control applications.

Key Features

• Annubar™ averaging pitot tube flow measurement technology
• Differential pressure-based flow measurement for gas, liquid, and steam
• Single pipe penetration design for simplified installation
• Low permanent pressure loss compared with traditional flow elements
• Supports HART®, WirelessHART®, FOUNDATION™ Fieldbus, and PROFIBUS® communication
• Measurement range up to 1000 inH₂O differential pressure
• Suitable for pipe sizes from 2 to 12 inches (50 to 300 mm)
• Advanced diagnostics and optional Local Operator Interface (LOI)
• SIL 2/3 safety certification options available
  

Applications

• Oil & Gas flow measurement
• Natural gas monitoring
• Steam flow measurement
• Chemical processing systems
• Power generation utilities
• Refinery process control
• Compressed air measurement
• Industrial water and utility systems

Selection Notes

Before selecting the Rosemount 2051CFA Annubar Flow Meter, consider:

• Measurement medium type (gas, liquid, or steam)
• Pipe size and installation conditions
• Required flow range and accuracy
• Process pressure and temperature requirements
• Communication protocol requirements
• Material compatibility with process media

Proper configuration ensures stable measurement performance and long-term reliability.

FAQ

Q1: What is Rosemount 2051CFA used for?
Rosemount 2051CFA is designed for differential pressure-based flow measurement of gases, liquids, and steam in industrial processes.

Q2: What is the advantage of Annubar technology?
Annubar technology uses an averaging pitot tube design to provide accurate flow measurement while reducing pressure loss and installation requirements.

Q3: Which communication protocols are supported?
Rosemount 2051CFA supports HART®, WirelessHART®, FOUNDATION™ Fieldbus, and PROFIBUS® communication options depending on configuration.