BT7350 24GHz Radar Velocity Meter for Hydrological Monitoring
Click here to download the datasheet.
1. Overview
The BT7350 Radar Velocity Meter is a non-contact, high-precision water flow speed measurement sensor designed for natural rivers, irrigation canals, urban drainage systems, and flood monitoring. Powered by a built-in German InnoSenT 24GHz planar microstrip radar module, the BT7350 delivers fast, accurate, and stable velocity data even in high-flow and flood condition environments without being affected by weather, sediment, or floating debris.
2. Key Features & Advantages
-
German 24GHz Radar Technology: Built-in InnoSenT 24GHz (ISM band) planar microstrip radar for precise velocity extraction.
-
Non-Contact & Low Maintenance: Continuous surface flow measurement free from water sediment, vegetation, or floating object interference.
-
Flexible Interfaces: Supports RS-232 (default), RS-485, SDI-12, and 4–20mA current loop for seamless system integration.
-
Ultra-Low Power Consumption: Smart operation and low-power standby modes ($\le 1\text{ mA}$) make it ideal for solar-powered remote telemetry stations.
-
Adjustable Frequency: Adjustable transmission frequency to prevent mutual interference when using multiple sensors nearby.
-
Rugged & Weatherproof: IP66-rated housing (POM front cover + Aluminum alloy back cover) with a wide operating temperature range of $-40^\circ\text{C}$ to $+60^\circ\text{C}$.
3. Technical Parameters
| Effective distance | 0.5 ~ 30 m |
| Speed range | 0.15 ~ 15 m/s |
| Resolution | 0.01 m/s |
| Accuracy | ±0.02 m/s |
| Start duration | ＜ 3 s |
| Measuring duration | 3~240s |
| Antenna type | Planar microstrip array antenna 32°× 14° |
| Radio frequency | 24.000 ~ 24.250 GHz |
| Transmit power | 26 dBm |
| Communication interface | RS-232(default)/ RS-485 / SDI-12 / 4-20 electric current loop
mA electric current loop |
| Digital type | 9600(default)8n1; baud rate adjustable |
| Working voltage | +7 ~ 28 V DC |
| Working current | Normal operating mode: 12 V, 110 mA Standby mode current ≤ 1mA |
| Working temperature | -40 ~ 60 ℃ |
| Protection level | IP66 |
| Dimension（length×width×height） | 100×100×40（mm） |
| Housing material | Front cover: POM; back cover: aluminum alloy |
4. Typical Applications
-
Hydrological Monitoring: Natural rivers, open streams, reservoirs, and lakes.
-
Agricultural Irrigation: Water flow speed tracking in canals and culverts.
-
Urban Drainage & Flood Control: Low-lying groundwater drain monitoring, storm pipe flow measurement, and flash flood detection.
5. Physical Parameters
Installation Guidelines
-
Mounting Angle : 30° ~ 60° (Recommended for optimal surface reflection)
-
Mounting Height: 0.5 ~ 30 m above the water surface
