Critical Technical Advantages
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Scalable Cost-Efficiency: The I 400 is specifically designed for pipes ranging from DN 200 up to DN 4000. Unlike inline meters, the cost of an insertion system does not increase exponentially with pipe size, making it the most economical choice for large-diameter water distribution and raw water intake lines.
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Dual-Path Measurement: For increased accuracy and reliability, the system supports two parallel measurement paths. This multi-path configuration helps to average out flow profile disturbances, providing a more representative and stable flow reading than single-point insertion technologies.
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Permanent, Maintenance-Free Installation: Because the sensors are installed directly into the medium through the pipe wall, they provide a long-term stable signal. Once installed, the system requires no routine maintenance, as there are no moving parts to wear out or clog.
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Heartbeat Technology: This integrated suite provides continuous self-monitoring of the sensor’s health and signal integrity. It enables traceable verification of the device’s performance without interrupting the process, which is critical for infrastructure that must remain operational 24/7.
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Integrated Web Server & Data Logger: The I 400 simplifies field operations with a built-in web server for remote configuration and an integrated data logger. This allows operators to monitor historical flow trends and perform diagnostics via a standard web browser without needing specialized software.
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Independent of Medium Properties: The ultrasonic transit-time principle is unaffected by the liquid’s conductivity or density. This makes the I 400 equally effective for high-purity water, raw surface water, or wastewater.
Detailed Technical Performance Matrix
| Specification | Technical Details and Ranges |
| Measured Variables | Volume flow, sound velocity, flow velocity |
| Calculated Variables | Corrected volume flow, mass flow |
| Nominal Diameter | DN 200 to 4000 (8″ to 160″) |
| Measurement Accuracy | Typically ±2.0% (standard) or better with field calibration |
| Medium Temperature | -40 to +80 °C (-40 to +176 °F) |
| Number of Paths | 1 or 2 parallel measurement paths |
| Transmitter Housing | Polycarbonate or Aluminum (Remote version available) |
| Communication | HART, PROFIBUS DP, EtherNet/IP, PROFINET, Modbus RS485 |
Primary Applications
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Water Distribution Mains: Monitoring flow in large municipal pipelines to manage water supply and identify network-wide trends.
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Wastewater Treatment Plants: Measuring influent and effluent flows in large open-channel-to-pipe transitions or large-diameter sludge lines.
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Raw Water Intake: Tracking the volume of water extracted from rivers or lakes for industrial or municipal use.
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Cooling Water Systems: Managing flow in massive cooling loops for power plants or heavy industrial facilities.
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Leak Detection Projects: Providing the bidirectional flow data necessary for calculating water balances in large district metered areas (DMAs).
