LDSR08M 24GHz Water Flow Radar: Precision Velocity & Liquid Level Detection Sensor

The LDSR08M is a high-performance 24GHz Doppler radar sensor designed specifically for water flow radar and velocity measurement applications. Integrating a microstrip antenna, RF circuit, and signal processing circuitry into a compact module, this mmWave radar sensor directly outputs target speed information for river flow monitoring and underground pipe network measurement. Featuring imported German integrated chips, a pre-low-noise amplifier, and ultra-high sensitivity, the LDSR08M delivers exceptional measurement accuracy from 0.05 to 20 m/s with ±0.01 m/s precision, making it an ideal solution for water conservancy, environmental monitoring, and industrial liquid flow applications.

1. Advanced 24GHz Radar Technology for Water Flow & Level Detection

As a sophisticated 24GHz radar sensor, the LDSR08M utilizes advanced PCB layout technology with ultra-low intermediate frequency sampling noise and stable, reliable algorithms. This water flow radar features high-gain antennas with 18.5dB gain and a radiation angle of ±6° / ±12°, ensuring focused detection on the water surface. The system’s exceptional sensitivity and noise suppression capabilities provide reliable liquid level detection performance when integrated with complementary sensors, making it a versatile tool for comprehensive water monitoring systems.

2. Core Features

2.1 High-Precision Water Flow & Velocity Measurement

• Measurement range: 0.05 – 20 m/s

• Measurement accuracy: ±0.01 m/s

• Resolution: 0.01 m/s

• Measurement rate: 1 measurement/second

2.2 Bidirectional Flow Detection

• Automatic flow direction identification – distinguishes between forward and reverse flow

• Configurable filtering – customizable signal processing for specific applications

2.3 High-Performance Hardware

• Frequency: 24 GHz Doppler radar sensor

• EIRP: 20 dBm

• Antenna gain: 18.5 dB

• Digital interface: RS485 with 9600 baud rate

• Protocols: ASCII / MODBUS (switchable)

2.4 Robust & Efficient Design

• Wide voltage support: 9 – 24V

• Operating current: 88mA @ 12V

• Operating temperature: -40°C ~ +85°C

• Ultra-low noise for stable signal acquisition

3. Application Scenarios

3.1 Water Flow Radar for River & Stream Monitoring

• River velocity measurement – real-time water flow radar monitoring for flood warning and water resource management

• Stream gauging – continuous flow monitoring for hydrological studies

• Reservoir inflow/outflow – tracking water movement in storage facilities

• Open channel flow measurement – 24GHz Doppler radar sensor for irrigation canals

3.2 Liquid Level Detection & Monitoring

• Liquid level detection systems – integrating with radar liquid level sensor for comprehensive water monitoring

• Tank level monitoring – using liquid level detection sensors for industrial storage tanks

• Reservoir water level – continuous liquid level detection machine functionality for water resource management

• Sewage and drainage systems – liquid level sensor integration for wastewater applications

3.3 Underground Pipe Networks & Drainage

• Urban drainage monitoring – measuring flow velocity in sewer systems

• Stormwater management – detecting flow changes during rainfall events

• Pipe network flow analysis – understanding flow dynamics in confined spaces

3.4 Environmental & Hydrological Studies

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

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

• Wetland monitoring – measuring flow in sensitive ecosystems

• Groundwater recharge studies – monitoring water movement in natural systems

3.5 Industrial & Commercial Applications

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

• Process water management – tracking industrial water consumption and discharge

• Wastewater treatment – measuring influent and effluent flow

• Chemical and petrochemical – liquid level detection in storage and processing tanks

3.6 Smart Agriculture & Irrigation

• Precision irrigation – monitoring water delivery to crops

• Aquaculture – measuring flow rates in fish farming operations

• Agricultural water distribution – water flow radar for efficient resource management

4. Installation Guidelines

4.1 Recommended Installation

• Mounting height: 2 – 20m (theoretically as low as 0.1m)

• Installation angle: 40° – 60° (55° recommended for flat channels)

• Direction: Face upstream for positive velocity reading

4.2 Angle Considerations

• Larger installation angles produce stronger signal reflection

• 50° – 65° recommended for maximum energy return

• For steep river slopes, smaller pitch angles are recommended

• Steeper channels require smaller pitch angles for optimal signal reception

4.3 Radome Design

• Module does not include antenna cover – customer must provide

• Recommended materials: PBT, PLA (strong wave transmission)

• Maintain at least 6.22mm distance between antenna surface and cover

5. Why Choose the LDSR08M?

6. Conclusion

The LDSR08M 24GHz Doppler radar sensor is a versatile water flow radar that combines high-precision velocity measurement with seamless integration capabilities for comprehensive liquid monitoring systems. Whether deployed as a standalone mmWave radar sensor for river flow monitoring, integrated with liquid level detection sensors for tank and reservoir management, or combined with a radar liquid level sensor for complete water conservancy solutions, this 24GHz radar sensor delivers accurate, maintenance-free performance in the most challenging environments. Its flexible protocol support, wide voltage range, and robust design make it an ideal choice for system integrators, water resource professionals, and industrial monitoring applications.

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