Handheld Surface Velocity Radar (SVR)
  • Handheld Surface Velocity Radar (SVR)
  • Handheld Surface Velocity Radar (SVR)
  • Handheld Surface Velocity Radar (SVR)
  • Handheld Surface Velocity Radar (SVR)

    • Radar Flow Measurement

    Handheld Surface Velocity Radar (SVR)

    Portable non-contact radar sensor for measuring surface flow velocity in open channels and rivers

    Handheld surface-velocity radars make it easy to measure flow speed without having to put any equipment in the water. They use K-band non-contact measurement to read surface velocity in rivers, wastewater channels, muddy streams and coastal areas. Their compact and lightweight build makes them easy to carry during field inspections, and one-hand operation keeps the process straightforward. Because the readings are taken from above the surface, the sensors are not affected by corrosion, sediment or suspended solids. Portable non-contact radars are widely used for routine field checks, flood-season patrols and on-site wastewater inspections, and they stay reliable even when the conditions change fast.

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    Parameters
    • Operating Frequency 24 GHz
    • Measuring Accuracy ±1%
    • Measuring Distance Up to 30 m
    • Velocity Measuring Range 0.1 to 25 m/s
    • Antenna Type Planar array antenna, 12° × 25°
    • Ingress Protection IP66
    • Measurement Modes Quick-measure mode / Continuous-measure mode
    • Operating Temperature -20 to 70 °C
    • Product Weight 730 g
    • Product Dimensions 155 × 94 × 223 mm
    • Horizontal Angle Compensation 0° to 60° (manual)
    • Vertical Angle Compensation 30° to 70° (automatic)
    • Power Supply Continuous operation of lithium battery ≥20 h / dry battery ≥20 min
    • Power Modes Dual-power option (lithium battery/dry batteries for emergency use)
    Dimensional Drawing
    Dimensional Drawing
    Features
    • The compact and portable design makes the radars easy to hold, and the non-contact measurement works well in complex field conditions.
    • A custom LCD screen shows instantaneous velocity, average velocity and tilt-angle data clearly during measurement.
    • More than 1,000 measurement records can be stored, reviewed, deleted or transferred when needed.
    • The radars support bracket mounting and Bluetooth configuration, offering comfortable operation even in bad weather.
    • An ultra-low-power design and dual-power options (lithium battery or dry batteries) allow reliable use during emergency measurements.
    • The in-house measurement module and velocity algorithm handle different wave conditions and keep the readings stable.
    Applications
    River and Channel Monitoring

    River and Channel Monitoring
    Used to measure surface-flow velocity in rivers and open channels.

    Flood-season Monitoring

    Flood-season Monitoring
    Ideal for on-site observations during heavy rain, whether it’s urban flooding or sudden flood surges in mountain regions.

    Wastewater and Drainage Inspections

    Wastewater and Drainage Inspections
    The radars support field checks in wastewater outlets and underground drainage networks by providing surface-flow readings without contact.

    Coastal and Marine Monitoring

    Coastal and Marine Monitoring
    Handheld radars can also be used to measure surface currents in nearshore and marine environments during routine coastal inspections.
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    Other Radar Sensors

    A 24 GHz planar microstrip radar combined with dedicated backend processing can extract surface-flow velocity with good stability. This type of sensor (RVM2400) performs well in open channels and natural river sections, where the water surface often changes due to debris, uneven flow or varying depth.

    The sensor measures flow velocities from 0.05 to 30 m/s with an accuracy of ±1%. This range covers both slow and high-speed conditions, allowing the sensor to follow the rapid increases in water velocity that occur during flood season while keeping the output stable, even when the flow becomes turbulent.

    FMCW millimeter-wave radar is a better option for monitoring flow velocity or flow rate without contact, as it takes measurements from above the water surface. Guided-wave radars use a probe that needs to be in direct contact with the material, which means it can't measure speed or flow from a distance. FMCW radars, on the other hand, can accurately detect water movement using Doppler or time-shift analysis, providing stable and reliable results.