Rosemount 4051SFA Annubar™ Flow Meter
- Accuracy: 0.025% span
- Warranty: 20-year limited
- Rangedown: 28:1 flow turndown
- Protocol: 4-20 mA HART®
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Description
Rosemount 4051SFA Annubar™ Flow Meter
The Rosemount 4051SFA Annubar Flow Meter utilizes an averaging pitot tube paired with a T-shaped sensor design to deliver unmatched accuracy across a wide range of flow conditions. This engineering innovation allows for measurement through a single pipe penetration, integrating a thermowell for simultaneous temperature data without interrupting the flow. Maintaining a compact profile inside the pipe minimizes turbulence and ensures low permanent pressure loss, resulting in improved energy efficiency and reduced operational costs. Designed for harsh plants and aggressive processes, the all‑welded hermetic stainless steel SuperModule™ platform resists both overpressure damage and line pressure fluctuations, preserving long-term accuracy. Ideal for industries like oil refining, chemical manufacturing, and high‑volume water distribution systems, this meter ensures precision where every cubic meter matters. Clients ordering through tpt24.com, the world’s leading online store for this device, receive fully verified authentic products with guaranteed quality delivery anywhere in the world.
Reduced Noise and Prevention of Sensor Clogging
A unique advantage of the 4051SFA is its sensor stagnation zone placement, which combats noise interference and measurement inaccuracies while actively preventing particulate build‑up. In slurry transport for mining operations or pulp and paper manufacturing, these defenses protect accuracy despite contaminated or high‑solid content flows. The smooth surface and tube geometry help reduce turbulence that can otherwise destabilize readings. Such noise suppression benefits water treatment plants tracking variable inflows or industrial cooling systems where rapid changes challenge consistent data acquisition. Beyond protecting measurement integrity, this clog‑resistant design extends service intervals, reducing maintenance costs and downtimes. Units sourced from tpt24.com arrive factory‑tested, configured, and leak‑verified, ensuring that even in particulate-heavy applications, the Annubar performs flawlessly from installation.
Bluetooth® Connectivity Enhancing Operational Safety and Flexibility
The Rosemount 4051SFA incorporates Bluetooth® wireless connectivity, revolutionizing how operators interact with the meter. Hazardous locations, such as offshore drilling rigs or chemical reactor zones, can be monitored and configured remotely, keeping personnel away from danger. Wireless access also simplifies operator rounds, allowing data capture via handheld devices and enabling quick diagnostics without breaking process continuity. Combining Bluetooth with powerful built‑in tools like Plugged Impulse Line Detection, Loop Integrity Verification, and Expanded Process Alerts, the Annubar transforms into a proactive maintenance asset. This connectivity helps streamline adjustments across distributed facilities, as seen in natural gas transmission networks or distributed renewable energy systems. When purchased from tpt24.com, each meter undergoes full wireless function testing before shipment, ensuring global customers receive a device ready for immediate safe integration.
Intuitive Backlit Display with Multilingual Capabilities
Operational clarity is maximized through the Rosemount 4051SFA’s graphical backlit display, which is large, well‑illuminated, and easy to read, even in low‑light industrial environments. Critical flow rate data, diagnostics alerts, and configuration menus are presented with logical, color‑coded schema for rapid interpretation. Supporting seven languages, the display ensures accessibility for multinational teams across facilities in Asia, Europe, the Americas, or the Middle East. This multilingual interface reduces training times and minimizes human error in plants where English is not the main language. For instance, water utility operators in global mega‑cities benefit from locally readable diagnostics while global refinery groups integrate with standardized multi‑language support. Purchases through tpt24.com allow customers to specify preferred language settings at order time, delivering fully customized devices for immediate on‑site deployment.
Wide Pipe Size Compatibility and Range Flexibility
Covering line sizes from 2 to 96 inches (50 to 2440 mm), the Rosemount 4051SFA is versatile enough to manage applications from narrow industrial lines to massive municipal mains. Its 28:1 flow turndown ratio ensures that fluctuating process demands can be tracked with optimized accuracy, avoiding the need for multiple instruments to handle different conditions. This scalability benefits industries like district heating, where winter peaks and summer troughs cause significant variation, and petrochemical plants, where batch processes may require rapid range adjustments. The wide compatibility reduces inventory complexity and simplifies procurement for global corporations managing diverse facilities. Clients sourcing through tpt24.com gain access to the full size range, with each unit pre‑calibrated to specific operational needs before global shipment.
Energy Savings Through Low Permanent Pressure Loss
The T‑shape Annubar sensor is engineered to minimize permanent pressure loss, enabling reduced pumping demands and power consumption over the life of the meter. Even marginal reductions in differential pressure can yield substantial cost benefits in high‑volume systems such as crude oil pipelines, gas compressor stations, and industrial cooling circuits. Reduced resistance in the pipeline leads directly to increased energy efficiency without compromising measurement integrity. Over its 20‑year stability guarantee, these savings accumulate to make a measurable impact on operational costs. When purchased via tpt24.com, customers are ensured that each unit’s energy‑saving characteristics have been validated through stringent manufacturer testing.









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