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Picture of ultrasonic flowmeter Proline Prosonic Flow W 400 (9W4B)

Proline Prosonic Flow W 400 ultrasonic clamp-on flowmeter

Reliable, flexible, zero maintenance – noninvasive flow measurement, consistently accurate, even in limited spaces

9W4B
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Picture of ultrasonic flowmeter Proline Prosonic Flow W 400 (9W4B)
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Ultrasonic clamp-on flowmeter Proline Prosonic Flow W 400 – noninvasive and easy to install – no process interruption – maintenance-free operation

Picture of ultrasonic flowmeter Proline Prosonic Flow W 400 in limited space
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When space is limited: Ultrasonic clamp-on flowmeter with FlowDC function for consistently high performance even at only 2 x DN inlet runs

Picture of ultrasonic flowmeter Proline Prosonic Flow W 400 on a DN 2000 pipe
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Ultrasonic flow measurement in an energy plant – maintenance-free clamp-on sensors on a DN 2000 pipe

Picture of ultrasonic flowmeter Proline Prosonic Flow W 400 in spite of disturbed flow profile
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Consistently high measurement performance in spite of disturbed flow profile – Prosonic Flow W 400 with FlowDC

Ultrasonic clamp-on flowmeter Proline Prosonic Flow W 400 – noninvasive and easy to install – no process interruption – maintenance-free operation

Heartbeat Technology

Specs at a glance

  • Max. measurement error

    Volume flow:
    ±3% o.r. for DN15
    ±2% o.r. for DN25 to 200
    ±2% o.r. above DN200

  • Measuring range

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

  • Medium temperature range

    –40 to +130 °C (–40 to +266 °F)

  • Max. process pressure

    N/A

Field of application

Prosonic Flow W 400 is the ultrasonic clamp-on flowmeter of choice for safe, cost-effective and maintenance-free measurement of conductive and non-conductive liquids. It measures flow noninvasively and bidirectionally, independent of pressure, density and conductivity, and without process interruption.

FlowDC makes mounting as flexible as never before. The specified accuracy is maintained at an inlet run of only 2 x DN, even in the case of disturbed flow profiles.

Special coupling pads make this ultrasonic clamp-on system maintenance-free during the entire product life cycle.


Heartbeat Technology provides continuous process transparency with its diagnostic, verification and monitoring functions. This way, build-up can be detected before it affects operation.

Benefits

  • Flexible mounting – FlowDC reduces inlet runs to a minimum

  • Reliable measurement performance – proven sensors in combination with maintenance-free mounting system deliver long-term stable signals

  • Low capital investment – cost-effectiveness increases with the pipe diameter (up to DN 4000/160")

  • User-friendly operation – the web server offers full remote access, while the device’s display offers convenient on-site interaction

  • Transparent process insights – Heartbeat Technology with its integrated diagnostics, verification and monitoring functions enable compliance and process safety at all times

Videos

  • How to install an Endress+Hauser ultraonic clamp-on flowmeter

  • How FlowDC function reduces inlet runs to a minimum

  • Straightforward application of FlowDC in practice

  • The ultrasonic flow measuring principle

  • Heartbeat Technology
    Smart instrumentation through Heartbeat Technology

    You want to increase plant performance and reduce costs? Our smart instrumentation portfolio with Heartbeat Technology offers in-depth device insight for more cost-efficiency and operational safety.

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