The Proline Prosonic Flow I 400 is a cost-effective, high-performance solution specifically engineered for the water and wastewater industry. Designed to overcome the logistical and financial hurdles of measuring flow in massive pipelines (up to DN 4000 / 160"), this insertion technology eliminates the need for expensive, heavy-duty flanges and specialized lifting equipment.
Available through
| Feature | Technical Details |
| Measuring Principle | Ultrasonic (Transit Time / Insertion) |
| Pipe Diameter Range | DN 200 to DN 4000 (8" to 160") |
| Max. Measurement Error | ±2.0% o.r. (Standard) / Higher precision with field calibration |
| Velocity Range | 0 to 15 m/s (Ideal for gravity and pumped systems) |
| Medium Temperature | -40 to +80 °C (-40 to +176 °F) |
| Connectivity | Integrated Web Server, HART, Modbus RS485, EtherNet/IP |
| Special Functions | Heartbeat Technology™, Integrated Data Logger |
Fixed Cost vs. Exponential Cost: For pipes above DN 1000, the cost of an inline magmeter or ultrasonic meter skyrockets. The I 400 cost remains low and constant regardless of pipe size.
Simplified Installation: The I 400 is installed via a small welded boss on the pipe wall. No massive civil works, no heavy cranes, and no weeks of pipeline downtime.
Maintenance-Free Longevity: Unlike mechanical insertion meters with rotors that wear out, the ultrasonic I 400 has no moving parts, ensuring years of drift-free performance in raw water or wastewater.
Web-Based Operation: The built-in web server allows for wireless configuration via tablet or smartphone—perfect for deep pits or elevated pipelines where screen access is difficult.
Hanyu Engineering Support: We assist in calculating the exact insertion depth and positioning to ensure the highest possible accuracy for your specific pipe profile.
The Challenge: A municipal water utility needed to add flow monitoring to a DN 2400 (96") main distribution line. A traditional inline meter would have required a 14-day total system shutdown and millions in construction costs.
The Hanyu Solution: The utility deployed the Proline Prosonic Flow I 400 via
The Result: The sensors were installed using a "hot-tap" method, avoiding a total water shutdown for the district.
The Impact: The project was completed in just 48 hours instead of 2 weeks. The utility saw a 60% reduction in capital investment compared to a full-bore electromagnetic meter, with data flowing immediately into their SCADA via Modbus.
Q1: How accurate is an insertion meter compared to an inline meter?
A: While inline meters typically offer ±0.5%, the I 400 provides a reliable ±2.0%. For most large-scale water distribution and wastewater applications, this accuracy is more than sufficient and offers the best balance between cost and performance.
Q2: Can the I 400 be installed without stopping the water flow?
A: Yes. When used with a suitable ball valve and hot-tapping tool, the I 400 can be inserted into a pressurized pipe without any process interruption.
Q3: Is the sensor robust enough for sewage?
A: Absolutely. The sensor is designed for water and wastewater environments. Its smooth profile prevents the "ragging" or clogging that often plagues mechanical insertion meters in sewage applications.
Q4: How does Hanyu Zhilian ensure my project data is safe?
A: We take your infrastructure security seriously. Per our Privacy Policy, all technical drawings and site data shared via