Proline Prosonic Flow W 400

Summary

Product Identification

• Product Name: Proline Prosonic Flow W 400
• Product Type: Ultrasonic clamp-on flowmeter
• Model/Part Number: 9W4B
• Manufacturer: Endress+Hauser

Field of Application

The Prosonic Flow W 400 is designed for the safe, cost-effective, and maintenance-free measurement of both conductive and non-conductive liquids. It is suitable for applications in the water and wastewater industry, process water, and hydropower plants.

Key Benefits

• Flexible mounting with reduced inlet runs thanks to FlowDC.
• Reliable and long-term stable measurement performance with maintenance-free mounting.
• Low capital investment, with cost-effectiveness increasing with pipe diameter.
• User-friendly operation via a web server for remote access and on-site display with touch control.
• Transparent process insights with Heartbeat Technology for integrated diagnostics, verification, and monitoring.
• Noninvasive and bidirectional measurement, independent of pressure, density, and conductivity.
• No process interruption required for mounting.

Operating Limits

• Medium Temperature Range: –40 to +130 °C (–40 to +266 °F)
• Max. Process Pressure: N/A
• Ambient Temperature Range (Sensor): -40 to 130 °C for all sensor sizes (DN 15 to 4000).

Feed Water / Process Media

• Liquids: Conductive and non-conductive liquids.

Measurement Performance

• Measuring Principle: Ultrasonic flow
• Measured Variables: Volume flow, Flow velocity, Sound velocity
• Measuring Range: 0 to 15 m/s (0 to 50 ft/s)
• Max. Measurement Error (Volume Flow):
  • ±3% o.r. for DN15
  • ±2% o.r. for DN25 to 200
  • ±2% o.r. above DN200

Hydraulic / Mechanical

• Nominal Diameter Range: DN 15 to 4000 (½ to 160")
• Sensor Materials (Clamp-on system):
  • Sensor holder: 1.4301 (304), 1.4404 (316L)
  • Sensor housing: 1.4301 (304), 1.4404 (316L)
  • Strapping bands: 1.4301 (304), 1.4404 (316L)
• Transmitter Housing Materials:
  • Wall-mounted housing: Polycarbonate; AlSi10Mg, coated
• Degree of Protection:
  • Transmitter: IP66/67, Type 4X enclosure
  • Sensor: IP66/67, Type 4X enclosure, IP68, Type 6P enclosure (optional)

Electrical

• Outputs:
  • 3 outputs: 4–20 mA/4–20 mA HART (active)
  • Pulse/frequency/switch output (passive)
  • Pulse/frequency/switch output (passive)
  • Modbus RS485
• Inputs: Status input
• Digital Communication: HART
• Power Supply: AC 100 to 240 V / AC/DC 24 V

Features

• Display/Operation: 4-line backlit display with touch control (operation from outside). Configuration via local display, web browser, and operating tools.
• Transmitter Features: Durable housing, optional remote version for wall mounting, integrated data logger.
• Sensor Features: Available sensor for GRP and plastic pipes.

Approvals and Certificates

• Product Safety: CE, C-tick marking, EAC-marking
• Metrological Approvals: Flowmeter verification for specified frequencies and line sizes, performed on accredited calibration facilities (acc. to ISO/IEC 17025). Heartbeat Technology complies with ISO 9001:2015.
• Other Approvals: cCSAus, other approvals and certificates available, Marine approvals and certificates available.

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror