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Radar Flowmeter: Flow Measurement for Narrow Channels & Pipe Networks

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The LDFM03 is an advanced radar flowmeter that integrates liquid level measurement and flow velocity measurement into a single compact device. Based on millimeter wave radar sensor technology, this non-contact radar flow meter solution is specifically designed for narrow channels, underground pipe networks, and confined spaces where traditional flow measurement methods are impractical. Combining a 24GHz mmWave radar sensor for velocity measurement and a 120GHz high-precision radar liquid level sensor, the LDFM03 delivers real-time flow velocity, water level, and flow rate data with exceptional accuracy.

1. Advanced Radar Technology

As a sophisticated radar flowmeter, the LDFM03 utilizes dual-radar technology: a mmWave radar sensor for velocity measurement and a radar liquid level sensor for high-precision water level detection with ±1mm accuracy. This millimeter wave radar sensor solution operates in FMCW mode, providing reliable velocity flow monitor capabilities in challenging environments. The system is unaffected by wind, temperature, haze, sediment, or floating debris, ensuring consistent performance in both indoor and outdoor applications as a true non-contact radar flow meter.

2. Key Features

  • Integrated velocity & level measurement – comprehensive flow data from a single device

  • Non-contact operation – no contact with water, immune to sediment and debris

  • Dual radar technology – 24GHz mmWave radar sensor for velocity, 120GHz radar liquid level sensor for level with ±1mm accuracy

  • Bidirectional flow detection – automatic identification of flow direction

  • Multiple cross-section support – rectangular, trapezoidal, and circular channels

  • Bluetooth configuration – easy setup and parameter adjustment via mobile app

  • Low power consumption – 140mA at 12V, suitable for battery-powered installations

  • Wide operating temperature – -45℃ to +85℃ for extreme environments

3. Comprehensive Application Scenarios

3.1 Underground Pipe Networks & Drainage Systems

The LDFM03 is specifically engineered for underground pipe network monitoring, where space is confined and access is limited. As a dedicated radar flowmeter, it provides reliable data in challenging below-ground environments.

  • Urban drainage networks – real-time velocity flow monitor in municipal sewer systems

  • Stormwater drainage pipes – detecting flow changes during heavy rainfall events

  • Combined sewer overflow (CSO) monitoring – tracking flow to prevent environmental contamination

  • Pipe condition assessment – identifying blockages or flow abnormalities

  • Flood prevention systems – early warning for potential overflow situations

  • Infiltration and inflow (I&I) detection – identifying excess water entering sewer systems

3.2 Narrow Channels & Irrigation Canals

The LDFM03 is ideal for narrow channels, irrigation canals, and small waterways where space constraints limit sensor installation. Its compact non-contact radar flow meter design ensures easy deployment.

  • Agricultural irrigation canals – precise flow measurement for water allocation and billing

  • Small rivers and streams – hydrology monitoring in headwaters and tributaries

  • Industrial water supply channels – measuring water usage in manufacturing facilities

  • Aquaculture and fish farming – monitoring water exchange rates in hatchery channels

  • Hydropower tailraces – flow measurement downstream of hydroelectric facilities

  • Water distribution networks – monitoring flow in secondary and tertiary canals

3.3 Water Treatment & Wastewater Management

The non-contact design and corrosion-resistant construction make the LDFM03 suitable for water and wastewater treatment applications. The radar liquid level sensor component ensures precise level data even in turbulent conditions.

  • Influent and effluent flow monitoring – measuring incoming and outgoing flow at treatment plants

  • Sludge return lines – monitoring flow in aeration and sedimentation basins

  • Chemical dosing control – measuring flow for precise chemical addition

  • Wastewater treatment plant influent – detecting diurnal flow variations

  • Stormwater retention basins – monitoring storage and release during wet weather

  • Industrial pre-treatment systems – tracking flow before discharge to municipal systems

3.4 Urban Water Supply & Distribution

The LDFM03 supports urban water management for efficient distribution and loss prevention, functioning as a reliable velocity flow monitor across distribution networks.

  • Water distribution network monitoring – tracking flow at key junctions and district metered areas

  • Leak detection and analysis – identifying abnormal flow patterns indicating pipe leaks

  • Pressure zone management – monitoring flow across different pressure zones

  • Reservoir inflow/outflow – measuring water entering and leaving storage facilities

  • Water loss reduction programs – providing accurate flow data for non-revenue water analysis

  • Smart city water infrastructure – integrating with IoT platforms for data-driven management

3.5 Environmental & Hydrological Monitoring

The LDFM03 is a valuable tool for environmental monitoring and hydrological studies, combining radar liquid level sensor accuracy with reliable flow measurement.

  • Stream gauging and flow monitoring – long-term data collection for water resource management

  • Wetland hydrology studies – measuring water levels and flow in sensitive ecosystems

  • Erosion and sediment transport studies – understanding flow dynamics in natural channels

  • Environmental flow assessment – monitoring minimum flow requirements for aquatic habitats

  • Floodplain mapping – flow data for flood risk assessment and modeling

  • Climate change impact studies – tracking changes in water flow patterns over time

3.6 Industrial & Commercial Applications

The LDFM03 serves diverse industrial and commercial flow measurement needs as a versatile radar flowmeter for various liquid media.

  • Cooling water systems – monitoring flow in power plants and manufacturing facilities

  • Process water management – tracking industrial water consumption and discharge

  • Mining operations – measuring water flow in dewatering and process water systems

  • Food and beverage processing – monitoring water usage in production facilities

  • Paper and pulp industry – measuring water flow in pulp processing

  • Construction site dewatering – monitoring pumped water discharge

3.7 Smart Agriculture & Precision Irrigation

The LDFM03 supports precision agriculture with reliable flow measurement in irrigation networks, leveraging its non-contact radar flow meter design for maintenance-free operation.

  • Drip irrigation flow monitoring – measuring water delivery to crops

  • Pivot irrigation system monitoring – tracking water usage in center-pivot systems

  • Water rights allocation – providing accurate flow data for water distribution

  • Irrigation scheduling optimization – using flow data for efficient water management

  • Remote farm monitoring – integrating with IoT platforms for agricultural automation

4. Cross-Section Compatibility

The LDFM03 supports multiple open channel cross-sections:

  • Rectangular channels – common in urban drainage and irrigation

  • Trapezoidal channels – widely used in agricultural irrigation systems

  • Circular pipes – standard in underground pipe networks

Cross-sectional parameters are configured via Bluetooth using the JET Radar Debugger mobile application for quick and easy setup.

5. Conclusion

The LDFM03 radar flowmeter is a comprehensive radar measure for water solution that combines precision, durability, and versatility. Whether deployed in narrow underground pipes, agricultural irrigation canals, or industrial water systems, this millimeter wave radar sensor flowmeter delivers reliable flow data unaffected by environmental conditions. Its low power consumption, Bluetooth configuration, and non-contact radar flow meter design make it an ideal choice for water resource management, environmental monitoring, and smart city infrastructure.

For technical datasheets, sample testing, or volume pricing, please contact our sales team.

Vivi

Hello, I'm Vivi, the export manager of Luda Technology (shenzhen) Co., Ltd..We have over 20 years of experience in the research and manufacturing of millimeter-wave radars. We have provided high-quality sensor products with excellent quality to more than 500 foreign companies, which are widely used in fields such as traffic speed measurement and river flow rate measurement. If you have any needs, please contact us to get a free quote.

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