Industrial Monitoring Devices 3051CFA Gas Flow Indicator
The 3051CFA Flow Indicator is an industrial-grade flow measurement device designed for precise monitoring of gas and liquid flows using differential pressure technology. Part of the Rosemount 3051CFA Annubar Flow Meter series, it offers high accuracy, durability, and advanced diagnostics to ensure reliable operation in industrial, HVAC, and pipeline applications. With Wireless HART® connectivity and robust materials like 316L stainless steel, it enhances process efficiency and safety across various sectors.
| Parameter / Model |
Rosemount 3051CFA |
Rosemount 8800 |
Yokogawa DY Series |
Siemens SITRANS F C MASS 2100 |
KROHNE OPTISONIC 7300 |
| Measurement Principle |
Differential Pressure (Annubar) |
Vortex Shedding |
Vortex Shedding |
Coriolis Mass Flow |
Ultrasonic (Clamp-on) |
| Accuracy |
±0.55% of the rate |
±0.65% of the rate |
±0.75% of the rate |
±0.1% of the rate |
±1% of the rate |
| Rangeability |
Up to 14:1 |
30:1 |
30:1 |
100:1 |
20:1 |
| Pressure Rating |
Up to 41 MPa (6000 psi) |
Up to 10.3 MPa (1500 psi) |
Up to 16 MPa |
Up to 100 bar |
Non-intrusive (no pressure loss) |
| Applications |
Gas, steam, liquid in oil & gas, chemical, and power |
Steam, gas, liquid, where no moving parts are preferred |
Steam, compressed air, and industrial gases |
Custody transfer, chemical dosing, high-accuracy gas/liquid |
Large pipelines, natural gas, and water distribution |
Product description:
Packaging:
Applications of the Rosemount™ 3051CFA Gas Flow Indicator
- Natural Gas Distribution: Accurate measurement of gas flow in pipelines for custody transfer, billing, and network balancing.
- Steam Flow Monitoring: Reliable monitoring of saturated and superheated steam in power plants, refineries, and chemical facilities.
- Compressed Air Systems Optimization of industrial compressed air usage, reducing energy costs and improving efficiency.
- Process Gas Measurement Suitable for oxygen, nitrogen, hydrogen, and other process gases in chemical and petrochemical industries.
- Energy Management provides real-time mass and energy flow data for plant-wide energy efficiency programs.
- Oil & Gas Production Flow measurement in upstream and midstream operations, including flare gas monitoring and fuel gas control.
- Utility Monitoring Integration into plant utility systems for monitoring steam, air, gas, and water (SAGW) networks.
FAQ – Rosemount™ 3051CFA Gas Flow Indicator
Q1. What is the Rosemount 3051CFA Gas Flow Indicator?
A: It is a differential pressure-based Annubar™ flow meter designed for accurate measurement of gas, steam, and liquid flow. It combines a Rosemount 3051S/3051C transmitter with an Annubar primary element for reliable, high-performance flow monitoring.
Q2. What measurement principle does it use?
A: It uses the differential pressure principle across a patented T-shaped Annubar sensor, which creates a pressure drop proportional to flow rate.
Q3. What is the accuracy of the 3051CFA?
A: Typical accuracy is ±0.55% of the rate for flow measurement, depending on installation and calibration.
Q4. What is the turndown ratio (rangeability)?
A: Up to 150:1 range down (with 8:1 flow turndown), allowing it to handle a wide range of flow conditions.
Q5. What communication protocols are supported?
A: Standard options include 4–20 mA HART®, WirelessHART®, FOUNDATION™ Fieldbus, PROFIBUS® PA, and Low Power HART®.
Q6. What line sizes can it be installed on?
A: Suitable for pipe sizes from 2 to 96 inches (50 to 2440 mm).
Q7. What are the wetted materials available?
A: Common options include 316L Stainless Steel, Alloy C-276, Monel, and Titanium, depending on process compatibility.
Q8. What industries typically use the 3051CFA?
A: Oil & gas, chemical, power generation, refining, and general industrial applications where accurate flow measurement of gas, steam, or liquids is required.
Q9. What are the key advantages compared to traditional flow meters?
A:
- Single pipe penetration → reduced installation cost and leak points
- Low permanent pressure loss → improved energy efficiency
- High-strength sensor design → suitable for severe service
- Multiple outputs (flow, pressure, temperature) from one device
Q10. What warranty is offered?
A: Emerson provides up to a 5-year limited warranty on the 3051CFA.
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