Rosemount™ 3415 4+1 Dual-Configuration Gas Ultrasonic Flow Meter
Combines a 4-path fiscal meter with a 1-path check meter for enhanced accuracy and early detection of buildup. Ideal for custody transfer.
Key Features
- Detect pipeline wall buildup early with a dedicated reflective check path that increases sensitivity to contamination and flow profile changes.
- Reduce custody transfer uncertainty through independent verification from chordal and reflective measurement paths with different failure modes.
- Increase operational flexibility with >100:1 rangeability to support wide flow conditions with fewer meter runs.
- Identify blockage, contamination, and abnormal flow conditions before measurement bias occurs using advanced ultrasonic diagnostics.
- Simplify troubleshooting with Smart Meter Verification, which translates diagnostic data into actionable insights and recommended actions.
- Visualize flow profile conditions in real time with diagnostics that identify swirl, asymmetry, and turbulence.
Frequently Asked Questions
The Rosemount™ 3415 4+1 Dual-Configuration Gas Ultrasonic Flow Meter provides continuous verification by comparing the primary four-path chordal measurement with an independent single reflective check path that responds differently to process disturbances, enabling operators to confirm measurement integrity in real time and detect deviations caused by buildup, blockage, or abnormal flow conditions within natural gas pipelines.
The Rosemount™ 3415 is suitable for custody transfer applications where a second independent measurement for verification (check metering) is required. Its reflective path provides continuous validation of the measurement, additional diagnostic information such as speed of sound (SOS), and a different failure mode than the chordal paths.
The Rosemount™ 3415 identifies measurement errors by comparing four chordal custody- transfer paths with a single reflective check path that is highly sensitive to contamination, liquids, and other process upsets. Operators can quickly detect deviations in flow measurement and speed of sound (SOS) without complex diagnostic interpretation, enabling corrective action before measurement errors impact fiscal accuracy.
The Rosemount™ 3415 uses separate electronics for the chordal and reflective paths, enabling operators to detect deviations in flow rate or speed of sound that may indicate emerging process issues before they impact fiscal measurement accuracy.
The Rosemount™ 3415 combines two meters in a single body. AGA 9 refers to this design as "close-coupled metering." The chordal 4-path meter meets custody transfer requirements, while the 1-path reflective meter is used only for verification (check metering) and does not meet custody transfer requirements. Although both meters are typically flow calibrated in a laboratory, only the 4-path meter is approved for custody transfer applications.