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Ellipse Pitot Tube Annular High Pressure Hot Tap Flow Meter (Model AHL)

Preso’s patented elliptical design outperforms and provides greater accuracy than traditional differential pressure flow measurement devices. This differential pressure flow meter is designed with a series of ports facing the upstream velocity pressures, as well as flow sensing ports strategically located ahead of the trailing edge flow separation
The multi-ported, self-averaging flow element consists of an elliptical shape with two independent flow sensing chambers. The impact velocity sensing holes (high pressure) are located along the leading edge and the true static sensing holes (low pressure) are on the exterior probe side. Model AHL comes with instrument shut-off valves or optional integral manifold valve for direct transmitter mount.

  • Applications:
    • Air
    • Liquids
    • Gases
  • Pipe Sizes:
    • 2 to 30 inches (50 to 760 mm)
  • Pressure:
    •   800 PSI (5515 kPa) Consult factory for higher pressure
  • Temperature:
    • 800 °F (426 °C) Consult factory for higher temperature
  • Accuracy:
    • ± 0.75% of reading
  • Turndown Ratio:
    • 17:1 with no vacuum effect