Radar Flow Meter
A radar flow meter is a non-contact water flow measurement instrument. It is primarily used to measure flow velocity in open channels such as rivers, reservoir gates, underground water pipe networks, and irrigation canals.
This product effectively monitors flow velocity and flow rate fluctuations, which provides monitoring units with accurate flow information.
- Maintenance-free, automatic mounting angle calibration;
- No submerged mounting structure required;
- Operates 24/7, even in flooding environments;
- Monitors water flow direction and identifies water movement;
- Speed range: 0.1-25 m/s (depending on hydrological conditions);
- Operates in backwater conditions;
- Available for measuring tidal rivers;
- Configurable: RS-485 (MODBUS standard, customizable protocols, compatible with domestic and international RTUs).
It has an accurate data output.
It saves energy and protects the environment
It is not affected by factors such as impurities, temperature and density of the water flow
It has a simple operation and maintenance.
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Sino-Inst’s radar flow meters are primarily used for open channel flow measurement. Sino-Inst has been deeply involved in the flow measurement industry for over 20 years. Our products are high-quality and affordable, and have been highly praised by users worldwide. If you need to measure the flow of river water, stream water, or sewage, then our products are the right choice. We have a comprehensive after-sales service system and offer a one-year warranty. Please contact us today for a quote!
Rivers, Reservoirs and Irrigation Canals
Rivers, Reservoirs and Irrigation Canals
In hydrology and water resources monitoring, radar flow meters are mainly used to continuously measure flow velocity in rivers, reservoirs, irrigation canals, and other locations.
Real-time data provides accurate data for water resource scheduling and water volume accounting. Their non-contact nature makes them particularly suitable for complex river channels containing sediment and floating debris, which reduces maintenance costs.
Equipment in Urban Water Management
In urban waterlogging monitoring, radar flow meters can capture real-time flow velocity during rainfall, which provides data support for flood prevention and early warning.
In rainwater and sewage pipe network flow measurement, the unique structural design of radar flow meters effectively solves the problem of garbage stuck in pipes. They offer stable performance and accurate data.
Environmental Protection and Disaster Monitoring
In environmental pollution monitoring, radar flow meters can provide real-time monitoring of flow at enterprise discharge outlets.
In mountainous areas, the low power consumption and easy deployment of these devices are suitable for monitoring floods in remote areas where manual inspections are difficult, which enables the timely capture of flood data for disaster early warning.
Wastewater Treatment
Radar flow meters are also suitable for recording water volume in wastewater treatment processes. Unaffected by impurities, density, and temperature, they can provide accurate water flow data.
More Information
What is a radar meter?
Radar flow meter utilizes millimeter-wave radar technology to non-contactly measure flow in ditches and rivers, which provides continuous measurement of water levels and flow velocities. Radar flow meters are highly accurate, non-contact flow measurement devices widely used in irrigation canals, natural rivers, and urban drainage networks.
How does a radar flow meter work?
When a radar transmits signals from a non-uniform flow surface, the centimeter waves (called backscatter) on the surface cause a Doppler shift. During the dry season, these centimeter waves are accurately detected due to their velocity, generating positive or negative Doppler shifts depending on the direction of their ripples. These two effects, caused by turbulent scattering, are nearly identical, meaning they are zero during dry seasons. Downstream flow, transmitting surface waves, produces additional Doppler shifts, requiring specialized analysis and measurement of the received signal. During periods of high flooding, surface wave reflections are significant, making surface velocity characteristics more easily captured by radar probes.
Use the Doppler principle to measure point velocity at each vertical line on the surface of a water body. Based on the pre-set cross-sectional geometry and the measured water level, they infer the flow area of each section. The virtual flow rate is calculated by multiplying the point velocity by the area of each section. The product of the virtual flow rate and the surface velocity coefficient is the measured flow rate.
Can radar flow meters work in contaminated or sediment-heavy water?
Radar flow meters can measure flow in contaminated or sediment-heavy water because they are non-contact.