AM-RFM901 Radar Open Channel Flow Meter
1) It measures flow velocity,level and Flow Calculation.
2) Flow speed:0.05~20m/s
3) Distance:0.2~20m
4) Output:4-20mA,RS485,Modbus,Hart
5) Easy installation,low maintenance and non-contact.
Product Details
Aumeascon’s Radar open channel flow meter uses non-contact microwave radar to measure surface velocity and water level in rivers, canals, and sewers, calculating flow rate (Q=V*A) by combining velocity with cross-sectional area, making it ideal for harsh conditions with sediment or pollution, and offers easy installation and maintenance. These devices rely on the Doppler principle to detect reflections from surface waves, unaffected by fluid temperature, corrosion, or floating debris, supporting automation and remote monitoring.
How It Works
1) Velocity Measurement: The radar sensor emits microwave signals that bounce off surface waves. By analyzing the frequency shift (Doppler effect) of the returning signals, it calculates the water’s surface velocity.
2) Level Measurement: A separate radar or integrated sensor measures the water level (depth).
3) Flow Calculation: Using the measured velocity, depth, and pre-programmed channel geometry, the device’s software calculates the cross-sectional area and applies a correction factor to determine the total flow rate (Discharge = Velocity x Area).
Key Advantages
1) High Accuracy: Reliable in challenging environments like floods or polluted waters.
2) Easy Installation: Can be mounted on bridges, banks, or even moving platforms.
3) Low Maintenance: Minimal wear and tear due to non-contact design.
4) Non-Contact: No immersion, so it’s unaffected by fouling, sediment, chemical corrosion, or floating solids.
Technical Specification
Model | AM-RFM901 Radar Open Channel Flow Meter |
Flow speed | 0.05~20m/s |
Flow speed accuracy | 3%FS |
Distance | 0.2~20m |
Distance accuracy | ±1mm |
Frequency range: | 81GHz |
Installation height | 0.5~20m |
Beam Angle | Speed measurement beam angle: 15° |
Measured beam angle:5.9° | |
Power supply | DC12~24V |
Average power | ≤300mA @DC12V (continuous operation) |
Protection | IP68 |
Lightning protection level | 2KV |
Working temperature | -40℃~80℃ |
Output | RS485 Modbus RTU, 4-20mA. Hart |
Configuration method: | PC interface |
Housing material | Aluminum alloy +ABS |
Size | 146*100*105mm (length * width * height) |
Maily Applications
- Water Resource Management: Monitoring rivers, streams, and reservoirs for optimized usage, conservation, and reservoir release management.
- Wastewater & Sewage: Measuring influent/effluent in treatment plants and monitoring urban drainage for regulatory compliance and process efficiency, unaffected by corrosive water.
- Irrigation: Tracking flow in agricultural channels to improve water efficiency and ensure crops get needed water without waste.
- Stormwater & Drainage: Managing runoff, mitigating flood risk, and ensuring accurate reporting in culverts and retention basins.
- Hydrological Studies: Providing continuous, accurate flow data for research, water conservancy projects, and natural water body analysis.
- Hydropower: Monitoring ecological discharge from power stations.
