E+H Proline Prosonic Flow W 400 Clamp-On Ultrasonic Flowmeter

Non-Intrusive Ultrasonic Flow Measurement for Water & Utilities

Modern water treatment facilities, power plants, and industrial utility networks require accurate flow metering without the high costs and risks associated with pipe cutting, plant downtime, or head loss. The Endress+Hauser Prosonic Flow W 400 Clamp-On Ultrasonic Flowmeter provides an economical, ultra-reliable, non-intrusive metering solution designed specifically for water and liquid utility management. As a professional global distributor of industrial process control instruments, we supply authentic, brand-new Endress+Hauser field instruments with full technical selection support and export services.

The Prosonic Flow W 400 operates on the proven transit-time ultrasonic difference principle. By attaching acoustic sensors to the pipe exterior, the system remains completely isolated from fluid pressure, chemical corrosion, and fouling inside the pipeline. Whether measuring raw river water, drinking water mains, industrial effluent, cooling water loops, or heating circuits, the W 400 delivers consistent, accurate continuous flow measurement across a vast array of metallic, plastic, and composite pipe materials.

Maintenance-Free Mounting and Submersible IP68 Protection

Traditional clamp-on flowmeters often suffer from acoustic signal deterioration due to dried-out coupling gel. The Prosonic Flow W 400 solves this operational challenge by utilizing durable, solid acoustic coupling pads. These coupling pads maintain permanently stable ultrasonic conductivity between the transducer and pipe wall without requiring periodic re-greasing or physical maintenance.

Key structural advantages include:

• IP68 Submersible Sensor Housing: The clamp-on sensors and mounting hardware are optionally rated to IP68 (NEMA 6P), making them suitable for long-term submersion in flooded pits, underground vaults, or direct outdoor exposure.

• Wide Pipe Diameter Range: A single sensor system can accommodate pipe sizes from DN 15 to DN 4000 (1/2″ to 160″), dramatically reducing spare parts inventory for municipal water authorities and plant operators.

• Zero Head Loss: Full-bore clamp-on operation creates zero internal restriction, eliminating pressure drops and lowering pumping energy costs over the life of the asset.

Smart Web Server Configuration & Field Communication

To streamline commissioning and field diagnostics, the Prosonic Flow W 400 transmitter platform features an integrated web server. Technicians can securely log into the flowmeter using any standard laptop, tablet, or smartphone web browser—without needing proprietary configuration software, specialized handheld communicators, or custom cables.

The system supports key digital control protocols, including 4-20 mA HART, Modbus RS485, PROFINET, and EtherNet/IP, enabling effortless integration into modern SCADA, DCS, and enterprise smart water networks.

Continuous Compliance with Onboard Heartbeat Technology

To simplify routine maintenance and comply with regulatory quality standards (such as ISO 9001 and environmental discharge permits), the Prosonic Flow W 400 integrates Endress+Hauser’s Heartbeat Technology. Operating continuously in the background during active measurement, Heartbeat Technology assesses sensor signal strength, acoustic transmission, and transmitter health. Operators can run on-demand, non-disruptive electronic verifications and generate tamper-proof diagnostic reports for audits and predictive maintenance schedules.

Applications

• Water & Wastewater Treatment: Raw water intake monitoring, drinking water distribution, sewage sludge, effluent discharge, and leakage detection networks.

• Industrial Utility Loops: Cooling water circuits, boiler feedwater, demineralized water distribution, and district heating loops.

• Power Generation & Energy: Condensate lines, auxiliary cooling systems, and hydropower penstock monitoring.

• Facility Management & HVAC: Chilled water metering, thermal energy accounting, and building water main monitoring.

• Retrofit & Temporary Monitoring: Adding flow measurement points to existing pipelines without shutting down active distribution networks.

Technical Specifications

• Measuring Principle: Ultrasonic Transit-Time Difference Measurement (Clamp-On)

• Nominal Pipe Size Range: DN 15 to 4000 (1/2″ to 160″)

• Measuring System: 1-path or 2-path acoustic measurement arrangement

• Suitable Pipe Materials: Carbon steel, stainless steel, cast iron, ductile iron, copper, PVC, PE, GRP, and lined pipes (e.g., cement, rubber)

• Measured Variables: Volume flow, sound velocity, signal strength, flow velocity, calculated mass flow

• Max. Measurement Error:

  • Field calibrated: ±0.5 % of reading

  • Standard: ±1.2 % of reading

• Measuring Range: 0 to 15 m/s (0 to 50 ft/s) bi-directional

• Medium Temperature Range: -40 to +130 °C (-40 to +266 °F)

• Ambient Temperature Range: -40 to +60 °C (-40 to +140 °F)

• Sensor Mounting & Enclosure Material: Stainless steel, aluminum, solid acoustic coupling pads

• Degree of Protection:

  • Clamp-on Sensor: IP67 (NEMA 4X) standard; IP68 (NEMA 6P) optional for long-term submersion

  • Transmitter Housing: IP66/67 (NEMA 4X)

• Transmitter Architecture: Compact version or remote version (9W4B)

• Display / Operation: Backlit display; integrated web server access via standard web browser; optional optical touch screen

• Digital Outputs / Communication: 4-20 mA HART, Modbus RS485, PROFINET, EtherNet/IP, pulse/frequency/switch output

• Power Supply: DC 24 V; AC 100 to 230 V

• Approvals & Certifications: Drinking water approvals (e.g., NSF 61, WRAS, ACS), CE, cCSAus, ATEX/IECEx (for hazardous utility areas), PED, CRN

常见问题回答 (FAQ)

Q1: Can the Prosonic Flow W 400 be installed on buried or underground pipes? A1: Yes, with the optional IP68 (NEMA 6P) sensor rating, the clamp-on transducers and mounting hardware can be permanently installed underground or in flooded valve chambers without water ingress damage.

Q2: Is your company the original manufacturer of the Prosonic Flow W 400? A2: No, we are an independent supplier and distributor of industrial process control devices. We supply authentic, brand-new Endress+Hauser devices with full technical documentation, selection support, and global export services.

Q3: How does the solid acoustic coupling pad simplify maintenance? A3: Unlike traditional acoustic gel that dries out or washes away over time, the solid coupling pads maintain permanent, maintenance-free ultrasonic contact between the pipe wall and sensor without requiring re-greasing.

Q4: Do I need special software to configure the W 400 flowmeter? A4: No, the built-in web server allows you to connect directly using a standard Ethernet cable or network connection from any laptop, tablet, or smartphone web browser for quick configuration and diagnostic checks.

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