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Picture of ultrasonic flowmeter Proline Prosonic Flow I 400 (9I4B)

Proline Prosonic Flow I 400 ultrasonic flowmeter

Insertion flowmeter with Heartbeat Technology and web server for the water and wastewater industry

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  • Measuring principle

    Ultrasonic flow

  • Product headline

    Insertion meter with Heartbeat Technology and web server for the water and wastewater industry.
    Bidirectional flow measurement of water and wastewater.

  • Sensor features

    Low capital investment – cost-effectiveness increases with pipe diameter (up to DN 4000/156"). Long-term stable signal – maintenance-free permanent mounting from outside with coupling pads. Process transparency – diagnostic capability.
    Supports two parallel measurement paths. For large diameters: DN 200 to 4000 (8 to 160"). Medium temperatur: –40 to +80 °C (–40 to +176 °F).

  • Transmitter features

    Safe operation – no need to open the device due to display with touch control, background lighting. Full remote access – web server. Integrated diagnostics, verification and monitoring – Heartbeat Technology.
    Transmitter housing made of durable polycarbonate or aluminium. Remote version for wall mounting. Integrated data logger: measured values monitoring.

  • Nominal diameter range

    DN200 to 4000 (8 to 160")

  • Wetted materials

    Insertion system:
    Sensor holder 1.4301 (304), 1.4404 (316L)
    Sensor housing 1.4301 (304), 1.4404 (316L)

  • Measured variables

    Volume flow, Flow velocity, Sound velocity

  • Max. measurement error

    Volume flow: ±2% o.r. above DN200

  • Measuring range

    0 to 15 m/s (0 to 50 ft/s)

  • Max. process pressure


  • Medium temperature range

    –40 to +80 °C (–40 to +176 °F)

  • Ambient temperature range

    -20 to 60°C (-4 to 140°F)

  • Sensor housing material


  • Transmitter housing material

    Wall-mounted housing:
    Polycarbonat; AlSi10Mg, coated

  • Degree of protection

    Transmitter: IP66/67, Type 4X enclosure
    Sensor: IP66/67, Type 4X enclosure, IP68, Type 6P enclosure (optional)

  • Display/Operation

    4‐line backlit display with touch control (operation from outside)
    Configuration via local display, web browser and operating tools possible

  • Outputs

    3 ouputs:
    4‐20 mA/4‐20 mA HART (active)
    Pulse/frequency/switch output (passive)
    Pulse/frequency/switch output (passive)

  • Inputs

    Status input

  • Digital communication


  • Power supply

    AC 100 to 240 V / AC/DC 24 V

  • Approvals


  • Other approvals and certificates

    Other approvals and certificates

  • Product safety

    CE, C-tick marking, EAC-marking

  • Metrological approvals and certificates

    Flowmeter verification
    Verification performed on accredited calibration facilities (acc. to ISO/IEC 17025)
    Heartbeat Technology complies with the requirements for measurement traceability according to ISO 9001:2015 – Section a

  • Marine approvals and certificates

    Marine approvals and certificates