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Averaging Pitot Tubes

Averaging Pitot Tubes

For Topside Flow Measurement

Solartron ISA Averaging pitot tubes use multiple sensing ports to continually average the flow profile and generate a differential pressure that represents the mean flow rate across the pipeline.

Averaging Pitot Tubes offer an accurate measurement and low permanent pressure loss, typically <10% of DP. There are two measurement principles and designs; High Flow have a single static pressure port outside of the flowing fluid region. This results in a lower DP and enables the accuracy figure to be sustained over a wider turn-down and at higher flow rates.

Low Flow have a dual ports which are both within the flowing region. The position produces a suction effect at the ports which magnifies the available range of differential pressure, enabling the Averaging Pitot Tube to be used in low velocity systems.

Solartron ISA offer the Averaging Pitot Tube design to suit the needs of any pipe-work configuration with different connections & orientations available. We provide complete Engineering support from initial design and sizing concepts to manufactured final products.


  • Low Permanent Pressure Loss
  • Wide flow turn-down

  • Specifications +

    • Air Ducts
    • Low Permanent Pressure Loss
    • Process Measurement

    Key Parameters
    • Proven Technology
    • Robust design
    • Low Permanent Pressure Loss
    • Accurate Flow Measurement
    • Suitability for clean process conditions

    Functional Specifications

    Line Size DN50 (1”) to DN2000 (80”) Larger lines sizes available on request
    Pressure Ratings Ranging from ANSI 150# to 2500#
    Connection Types Flanged, Compression Fittings, Further connections are available on request
    Types of Tappings Flanged / NPT / Socket Weld Further types are available on request
    Product Type High Flow / Low Flow
    Reynolds Number Ranging from 104 up to 107

    Accuracy Better than ±5%
    Upstream Straight Lengths
    8D – Single 90 degree bend
    10D – Double 90 degree bend
    NDT Testing Hydro-testing, Dye Penetrant,
    Additional options: PMI, Further testing is available on request
    Flow Turndown Typically >10:1, depending on Transmitter configuration
    Averaging Pitot Tube Material Stainless Steel, Duplex, Super Duplex, 6 Mo, Monel 400, Inconel 625
    Further materials are available on request

  • Downloads +

  • Guidelines +

    Flowstream Averaging Pitot Tubes
    ISA Standard Design

    ASME B31.3


    PED 97/23/EC
  • DP Flow Questionnaire +