The Rosemount SeniorSonic 3414 is preferred worldwide for fiscal measurement and custody transfer applications. By retaining the field-proven British Gas-chordal design and integrating ultra-fast 3410 Series Electronics, this four-path gas ultrasonic flow meter significantly increases sampling speeds. This powerful platform minimizes measurement uncertainty by enabling rapid detection of abnormal flow profiles, upstream blockages, and the presence of liquid hydrocarbons.
Equipped with the new Type 4 CPU Module, the 3414 series provides deep insights via MeterLink™ Software. Operators receive a 3D view of the flow profile to monitor swirl and turbulence in real-time. With the included Smart Meter Verification feature, users can reduce data analysis time significantly. The meter also automates complex AGA 8 Compressibility and AGA 10 Speed of Sound calculations to eliminate manual errors and ensure regulatory compliance.
| Feature | Specification Details |
| Line Sizes | DN100 to DN1050 (4-in to 42-in) |
| Accuracy | ±0.1% of reading relative over calibration range |
| Repeatability | ±0.05% of reading (1.5 to 30.5 m/s) |
| Fluid Type | Natural Gas, Fuel Gas, Process Gas |
| Operating Pressure | Up to 27,579 kPag (4,000 psig) |
| Temperature Range | -50°C to +125°C (-58°F to +257°F) with T-200 |
| Body Orientation | British Gas (BG) for 8" and larger; Dual X for 4"-6" |
| Transducers | T-21, T-22, or Titanium Encapsulated T-200 |
When selecting a Rosemount SeniorSonic 3414, consider the specific requirements of your fiscal gate station. For high-pressure or corrosive environments, we strongly recommend the titanium-encapsulated T-200 Transducers. For smaller line sizes (4" to 6"), the meter utilizes a 45° dual X orientation, while larger lines (8" and up) leverage the British Gas (BG) orientation to ensure complete chordal coverage. If your application involves liquid hydrocarbons, consider standardizing your facility with the [Rosemount 3812 Two-Path Liquid Meter].
To maintain ±0.1% accuracy, the 3414 must be installed according to AGA 9 standards regarding straight pipe runs and flow conditioning. The 3414 simplifies fiscal measurement setups by providing up to six frequency or digital outputs via the Type 4 CPU. Ensure that the meter is oriented correctly to utilize the predictive diagnostics that alert users to wall buildup or deviating gas quality. For remote instrumentation without local power, pairing with the [Rosemount 3051S Wireless] system can provide auxiliary pressure monitoring.
The T-200 Transducers are designed for longevity and are safely extractable under pressure without special tools, minimizing downtime during inspections. We recommend a proactive maintenance schedule using MeterLink™ Software to review flow profile symmetry and crossflow. By tracking performance against the initial calibration baseline with Smart Meter Verification, you can safely extend recalibration cycles. For processes with high-viscosity or abrasive fluids elsewhere in your plant, the [Rosemount 9195 Wedge Flow Meter] serves as an excellent complementary solution.
Q: What makes the Rosemount 3414 suitable for fiscal measurement?
A: Its four-path British Gas-chordal design provides the high sampling speed and redundancy required to meet global standards (like AGA 9 and OIML R137 Class 0.5) for custody transfer and fiscal accuracy.
Q: Can the T-200 transducers be replaced while the line is pressurized?
A: Yes, the titanium-encapsulated T-200 transducers are specifically designed to be safely extractable under pressure without the need for special tools, ensuring continuous operation and zero downtime.
Q: How does Smart Meter Verification help reduce maintenance costs?
A: It allows operators to verify the meter's health and performance against a known baseline while in-situ, which can help safely extend the interval between expensive off-site laboratory recalibrations.
