Rosemount 3051CFA Annubar Flow Meter
The Rosemount 3051CFA Annubar flowmeter is an industry-leading flow measurement solution that utilizes a patented T-shaped averaging pitot tube to provide reliable accuracy across various flow ranges.
Key words:
measurement
flowmeter
pressure
Classification:
Rosemount flow meter
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Detailed introduction
The Rosemount 3051CFA Annubar flowmeter is an industry-leading flow measurement solution that utilizes a patented T-shaped averaging pitot tube to provide reliable accuracy across various flow ranges. Its patented sensor design allows for a smaller footprint in the pipeline to reduce permanent pressure loss and obtain flow and pressure measurements through a single pipe orifice. Additionally, the flowmeter has undergone leak testing and calibration to minimize leak points and enhance process control.
Here’s a streamlined snapshot of the key features of the Rosemount 3051CFA Annubar Flow Meter:
Integral Annubar Technology: Patented averaging pitot tube design measures the velocity profile across the pipe for high accuracy with minimal pressure drop.
Multivariable Output: Measures differential pressure, static pressure, and process temperature in a single installation—ideal for calculating mass and energy flow.
Communication Versatility: Supports multiple protocols including HART, WirelessHART, FOUNDATION Fieldbus, and PROFIBUS PA.
Smart Diagnostics: Includes Plugged Impulse Line Detection, Loop Integrity, and advanced troubleshooting through AMS Device Manager.
SIL 2/3 Certification: Certified for use in safety instrumented systems in accordance with IEC 61508.
Modular & Scalable Design: Available for pipe sizes from 2” to 96”, allowing customization for a broad range of flow applications.
Wireless Ready: Optional wireless transmitter with Bluetooth® access and extended battery life for remote or hard-to-reach installations.
| Parameter | Specification |
|---|---|
| Primary Element Type | Averaging Pitot Tube (Annubar) |
| Transmitter Model | Rosemount 3051C |
| Measured Variables | Differential Pressure, Static Pressure, Temperature |
| Flow Calculation | Mass, Volume, and Energy Flow |
| Pipe Size Range | 2 in. to 96 in. (50 mm to 2440 mm) |
| DP Range | Up to 1000 inH₂O (2.48 bar) |
| Output Protocols | 4–20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS® PA, Low Power HART® |
| Accuracy | ±0.75% of flow rate (typical) |
| Operating Temperature | -40 to 302 °F (-40 to 150 °C), depending on configuration |
| Operating Pressure | Up to ANSI Class 600 (varies by model) |
| Wireless Range | Up to 225 meters with extended battery life |
| Safety Certification | SIL 2/3 Certified (IEC 61508) |
| Diagnostics | Plugged Impulse Line Detection, Loop Integrity, Advanced Troubleshooting |
| Installation | Single pipe penetration with integral mounting |
FAQ for the Rosemount 3051CFA Annubar Flow Meter, tailored to common technical and application-related queries:
Frequently Asked Questions
1. What is the Rosemount 3051CFA Annubar Flow Meter used for?
It’s designed for accurate flow measurement of gases, liquids, and steam using differential pressure. It’s ideal for applications requiring minimal pressure loss and multivariable output.
2. What makes the Annubar design unique?
The patented T-shaped averaging pitot tube captures the velocity profile across the pipe, delivering high accuracy with low permanent pressure loss.
3. What variables can it measure?
It measures differential pressure, static pressure, and process temperature, enabling calculation of mass, volume, and energy flow.
4. What communication protocols are supported?
It supports 4–20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS® PA, and Low Power HART®.
5. What is the accuracy of the flow measurement?
Typical flow accuracy is ±0.75%, depending on installation and process conditions.
6. Is it suitable for safety-critical applications?
Yes, it is SIL 2/3 certified per IEC 61508, making it suitable for use in safety instrumented systems.
7. What pipe sizes can it accommodate?
It supports line sizes from 2 to 96 inches (50 to 2440 mm).
8. Can it be used in wireless applications?
Absolutely. It offers Bluetooth® connectivity and a wireless range up to 225 meters, with a 10-year field-replaceable power module.
9. What diagnostics are available?
It includes Plugged Impulse Line Detection, Loop Integrity, and Process Alerts for proactive maintenance.
10. What materials are available for wetted parts?
Standard options include 316L stainless steel and Alloy C-276, suitable for a wide range of process fluids.
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