Why the 24GHz Handheld Radar Velocity Meter is the “First Responder” for Emergency Flood Surveys

When a flash flood hits or a river rises rapidly, deploying traditional submerged current meters is not only time-consuming but life-threatening for field engineers. In 2025-2026, the industry has shifted toward Non-contact, Portable Solutions that allow for instant measurements from the safety of a bridge or riverbank.

The Solution: The Honde 24GHz Doppler Handheld Portable Surface Velocity Meter. Designed for “Point-and-Measure” convenience, this industrial-grade tool provides millisecond velocity feedback without ever touching the water.

The RD-200 Handheld uses the Doppler Effect to detect the velocity of the water surface.

• Instant Accuracy: Within seconds of aiming the device at the flow, the high-precision 24GHz radar captures velocity data ranging from 0.03 m/s to 20 m/s.

• Zero Interference: Unlike ultrasonic handhelds, our radar technology is unaffected by water temperature, sediment concentration, or air humidity—ensuring reliable data during heavy rain.

• Safety First: By standing on a bridge or high bank, operators remain safe from debris, rapid currents, and unstable shorelines.

While the RD-200 is a standalone portable powerhouse, it is also a critical part of the Honde Smart Water Solution:

1. 1
   Field Data Logging

   • The device acts as its own Handheld Meter and Data Logger, featuring an integrated, high-contrast screen for real-time viewing and local storage of field survey results.
2. 2
   Wireless Integration (The Data Bridge)

   • Field data collected by our handheld units can be seamlessly synchronized with our GPRS, 4G, WIFI, LoRa, or LoRaWAN wireless modules.
   • MQTT Json Support: For regional water monitoring networks, the system supports the MQTT Json format, allowing field survey data to be instantly uploaded to centralized Smart City platforms.
3. 3
   Cloud-Based Decision Support

   • All uploaded data is managed by the Honde Cloud Server and Software, which provides deep historical trend analysis.
   • Alarm Relay System: Even in a portable context, the data can trigger our cloud-based Alarm Relay System, notifying downstream emergency teams if the measured velocity exceeds the flood safety threshold.

• Emergency Flood Surveys: Rapid assessment of river velocity during storm surges when fixed stations are unavailable.

• Irrigation Canal Checks: Quick, routine checks of water distribution in open canals without installing permanent structures.

• Hydraulic Research: Instant surface velocity mapping for river modeling and environmental studies.

Honde Technology is a Germany TUV & Alibaba verified manufacturer with 15 years of excellence in non-contact hydrometry.

For more information, please contact Honde Technology Co., LTD.

WhatsApp:+86-15210548582

Email: info@hondetech.com

Company Website:www.hondetechco.com