The PRE575-RFM Radar Wave Flow Meter is the ultimate solution for accurate, reliable, and cost-effective water flow measurement. Whether for urban water management, environmental monitoring, or industrial applications, this advanced radar-based technology ensures real-time and precise flow data for better decision-making.
The PRE575-RFM Radar Wave Flow Meter is an advanced, fully automated flow measurement device powered by cutting-edge microwave technology. Utilizing state-of-the-art K-band planar radar, it accurately measures water flow velocity and level without any physical contact. This makes it an ideal solution for various water monitoring applications, from rivers and irrigation canals to underground drainage systems and flood control.
With its low power consumption, high reliability, and minimal maintenance requirements, the PRE575-RFM offers a dependable and cost-effective choice for organizations needing real-time flow and cumulative water data across different environments.

This advanced flow meter is designed for diverse water monitoring applications, including:
Water Velocity, Level, and Flow Measurement
Urban Water Treatment & Sewer Monitoring
Flow Calculation & Drainage Monitoring
| Item | Details |
| Versions | PRE575-RFM (Standard version)
PRE575-RFM-R (RTU version ): Support parameter adjustment by bluetooth; Wireless configuration and maintenance by mobile phone; Equipment remote upgrade |
| Measurement System | |
| Measuring Principle | Planar microstrip array antenna, CW + FMCW |
| Operating Mode | Manual, automatic, telemetry |
| Applicable Environment | 24-hour operation, suitable for rainy days |
| Operating Temperature | -30~80℃ |
| Operating Voltage | 7–32VDC; 5.5–32VDC (Optional) |
| Working Current | For 12VDC input, Operating mode: <150mA; Standby mode: <1mA |
| Ambient Temperature Output | Temperature resolution: 0.1℃; Temperature accuracy: ±1℃ |
| IP Rating | IP68 |
| Radar Velocity Meter | |
| Radar Power | 100mW |
| Radar Frequency | 24GHz |
| Max Measurement Range | 40 meters |
| Velocity Range | 0.02~20 m/s |
| Velocity Measurement Resolution | 0.001 m/s |
| Velocity Measurement Accuracy | ±0.1%FS |
| Antenna Angle | 12° |
| Flow Direction Detection | Automatic recognition of water flow direction, built-in vertical angle correction |
| Radar Water Level Sensor | |
| Radar Power | 100mW |
| Radar Frequency | 24GHz |
| Level Measurement Range | 40 meters |
| Level Measurement Revolution | 0.5 mm |
| Level Measurement Accuracy | ±2mm |
| Antenna Angle | 11° |
| Data Transmission System | |
| Data Transmission | RS485 (default), RS232 (reserved), 4–20mA, 433MHz (optional), 4G (optional), NB-IoT (optional) |
✅ High Accuracy – Precise velocity and water level measurements, even in complex conditions.
✅ Reliable Performance – Works under extreme temperatures, sedimentation, and debris presence.
✅ Low Maintenance – Minimal servicing required, reducing operational costs.
✅ Easy Integration – Supports multiple data output options for seamless system compatibility.
✅ Environmentally Friendly – Non-contact measurement prevents contamination and reduces interference with ecosystems.
The PRE575-RFM Radar Wave Flow Meter is the ultimate solution for accurate, reliable, and cost-effective water flow measurement. Whether for urban water management, environmental monitoring, or industrial applications, this advanced radar-based technology ensures real-time and precise flow data for better decision-making.
👉 Contact us today to learn more about how the PRE575-RFM Flow Meter can optimize your water flow monitoring system!
📧 Email: info@prems-usa.us
🌍 Website: PREMS Instruments