The Rosemount 2051CFC is an industry-standard differential pressure flow meter engineered to provide reliable performance for industrial flow monitoring, closed-loop control, and custody transfer applications. As a versatile 2051CFC primary element, it is designed to operate seamlessly in gas, liquid, and steam service, even under harsh process conditions.
For installations with limited space, this compact orifice flow meter can be configured with a patented 4-hole conditioning plate. This innovative design is optimized for turbulent flow measurement, requiring only two diameters (2D) of upstream and downstream straight pipe run. By reducing pipe straight-run requirements, it offers unmatched application flexibility and lower installation costs.
As shown in the conditioning plate diagram, the 4-hole design stabilizes turbulent flow profiles.
To meet the demands of modern digital plants, the device is available as a WirelessHART flow transmitter, delivering >99% data reliability without the high cost of traditional wiring. For safety-critical environments, the 2051CFC is a SIL 2/3 certified solution, ensuring compliance with IEC 61508 standards for safety-instrumented systems.
| Feature | Specification Details |
| Rangedown | Up to 100:1 (5:1 flow turndown) |
| Line Size | 0.5 to 12 in. (15 to 300 mm) |
| Wetted Material | Durable 316 SST flow meter construction |
| Safety Certification | SIL 2/3 certified to IEC 61508 |
| Communication | HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS® |
| Power Module | SmartPower™ module with up to 10-year life |
Compliance: NACE® MR0175/ISO 15156 for sour gas service.
Hazardous Area Approvals: ATEX, IECEx, and CSA certifications.
Application Flexibility: Choose line sizes from 0.5 to 12 inches to suit your specific piping requirements.
Output Options: Configure for differential pressure or a scaled variable depending on your control system needs.
Material Selection: The 316 SST body provides robust resistance for standard industrial media.
Leak Reduction: Complete flow assemblies are factory leak-tested and calibrated to reduce potential leak points by up to 70%.
Quick Setup: The local operator interface features easy-to-use menus and built-in configuration buttons for streamlined commissioning.
No Wiring Costs: Utilize the WirelessHART option for quick instrumentation of measurement points in remote locations.
Select Your Primary Element: Choose the standard compact orifice or the patented 4-hole conditioning plate based on your pipe straight-run availability.
Mount the Assembly: Install the factory-calibrated flow assembly between flanges, ensuring correct orientation with the 2051CFC primary element.
Configure Output: Use the local operator interface to set the 100:1 rangedown and scaled variables for your control system.
Establish Connection: Activate WirelessHART® for secure, cable-free data reliability over 99%.
SmartPower™ Management: The power module offers up to 10 years of maintenance-free operation and can be replaced in the field without removing the transmitter.
Diagnostic Monitoring: Utilize Basic Diagnostics to ensure continuous loop health and measurement accuracy.
Update Rates: User-selectable update rates from 1 second to 60 minutes allow you to optimize battery life against data frequency requirements.
Space Issues: Most plants struggle with enough straight piping; the 4-hole plate solves this.
Installation Time: The factory-calibrated assembly and LOI interface solve the problem of slow, complex commissioning.
Cost: WirelessHART solves the massive expense of trenching and wiring.
Safety: SIL 2/3 certification solves the compliance requirement for safety-instrumented systems.
How does the Rosemount 2051CFC reduce straight pipe requirements?
The patented 4-hole conditioning plate design allows for accurate measurement in turbulent flow profiles, requiring only 2D upstream and downstream straight-run.
What line sizes are compatible with the 2051CFC?
This compact orifice flow meter is available for line sizes ranging from 0.5 to 12 inches (15 to 300 mm).
Is this flow meter suitable for safety-critical applications?
Yes, it is SIL 2/3 certified to IEC 61508 by an independent 3rd party and includes prior-use certificate of FMEDA data for safety installations.
What are the wireless capabilities of this device?
The device utilizes WirelessHART® technology for secure, cost-effective data reliability (>99%) and features a SmartPower™ module with up to 10-year life.
How does the factory calibration benefit installation?
Complete flow assemblies are factory leak-tested and calibrated, which simplifies installation and reduces potential leak points by up to 70%.
