Daniel 3415 4+1 Dual-Configuration Gas Ultrasonic Flow Meter


Daniel 3415 4+1 Dual-Configuration Gas Ultrasonic Flow Meter


Designed to minimize fiscal measurement uncertainty, the Daniel™ 3415 4+1 Ultrasonic Flow Meter combines the power and performance of a field-proven Daniel four-path chordal, British Gas-design meter (certified to OIML R137 1&2 Accuracy Class 0.5) with a one-path, reflective check meter in a single body. The reflective path increases sensitivity to costly buildup on pipeline walls, enabling operators to take necessary action before measurement is adversely impacted. The meter is equipped with ultra-fast 3410 Series Electronics that generate a wealth of predictive diagnostics displayed via MeterLink™ Software, providing a wealth of flow intelligence to help expedite identification of costly process upsets.


Line Sizes
DN200 to DN600 (8-in to 24-in)
Fluid Type
  • 4-Path Meter: ±0.05% of reading relative over entire calibration range
  • 1-Path Meter: ±0.2% of reading with calibration (±1.5% of actual vol without calibration)
  • 4-Path Meter: ±0.05% of reading for 5 to 100 ft/s (1.5 to 30.5 m/s)
  • 2-Path Meter: ±0.1% of reading for 5 to 100 ft/s (1.5 to 30.5 m/s)
Rated up to 100 fps (30 m/s) with over-range performance exceeding 125 fps (38 m/s) on some sizes
Operating Temperature Range
  • T-21 Transducers: -20°C to +100°C (-4°F to +212°F)
  • T-22 Transducers: -50°C to +100°C (-58°F to +212°F)
Operating Pressure Range
  • T-21/T-22 Transducers: 689 to 27,579 kPag (100 to 4,000 psig)
  • T-21/T-22 Transducers: 345 kPag (50 psig) minimum operating pressure available with reduced Qmax (see product datasheet)
Carbon steel and stainless steel


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  • Detect buildup on pipeline walls in real time with sensitive 30°, single reflective path
  • Expedite flow disturbance detection with patented transducer synchronization that prevents interference and noise
  • Avoid common mode errors with chordal and reflective paths that work in unison
  • Reduce measurement uncertainty with process alerts for wall buildup, liquids, blockage and deviating gas quality
  • Speed issue resolution with 3D view of the flow profile that indicates swirl, crossflow, asymmetry and turbulence
  • Reduce manual errors with automatic calculations of AGA 8 Compressibility and AGA 10 Speed of Sound
  • Increase I/O with new Type 4 CPU Module with up to six frequency or digital outputs

Documents & Drawings