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Picture of Ultrasonic flowmeter Prosonic Flow E Heat (DN50 / 2") for water energy management

Prosonic Flow E Heat ultrasonic flowmeter

Industrial, certified heat flow sensor for improved energy consumption measurement

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  • Measuring principle

    Ultrasonic flow

  • Product headline

    Industrial, certified heat flow sensor for improved energy consumption measurement.
    Full compliance with custody transfer regulations.
    Best choice for energy management of water (e.g. heating and cooling) across all industries.

  • Sensor features

    Long-term stability – reliable sensor with robust industrial design. Energy and cost savings – optimized sensor for fully insulated pipes. Dependable flow measurement – high turndown.
    Accuracy Class 2 according to international approvals such as MI-004, EN 1434, OIML R75. Entire sensor housing made of stainless steel. Process temperatures up to 150 °C (302 °F).

  • Transmitter features

    Effortless, safe operation – no commissioning needed, no unauthorized device access due to locked pulse output. Simple process indication – direct reading of status information via color LEDs. Increased reliability – comprehensive diagnostics.
    Certified pulse output. Cost-efficient, application-optimized transmitter.

  • Nominal diameter range

    DN 50 to 150 (2"to 6")

  • Wetted materials

    Measuring tube: 1.4301 (F304)
    Process Connection: 1.4571; 1.4404 (F316L); 1.0038 (S235JR); 1,4306 (F304L); 1.4307 (F304L); A105

  • Measured variables

    Flow velocity, sound velocity

  • Max. measurement error

    MID 004 accuracy class II (2%)

  • Measuring range

    0.025 to 5 m/s (0.02 to 16.4 ft/s)
    0 to 6360 dm3/min (0 to 1680 gal/min)

  • Max. process pressure

    PN 25/ ASME Cl. 150

  • Medium temperature range

    0 to 150° (17.8 to 302 °F)

  • Ambient temperature range

    -20 to 60 °C (-4 to 140 °F)

  • Sensor housing material

    Stainless steel

  • Transmitter housing material

    Compact: AlSi10Mg, coated

  • Degree of protection

    Standard: IP66/67, Type 4X enclosure
    With opened housing: IP20, Type 1 enclosure

  • Display/Operation

    direct reading of status information via color LEDs

  • Outputs


  • Inputs


  • Digital communication


  • Power supply

    DC 19.2 to 28.8 V

  • Hazardous area approvals


  • Product safety

    CE, C-Tick, EAC marking

  • Metrological approvals and certificates

    Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025)
    MI-004 Thermal Energy
    OIML R75 Class 2

  • Pressure approvals and certificates


  • Material certificates

    3.1 material