The Non-Contact Radar Flow Meter from TOOL online is designed for accurate and maintenance-free water level and flow monitoring in rivers, open channels, reservoirs, and irrigation systems. Using advanced 76–81GHz radar technology, it delivers stable measurement with up to ±1mm accuracy over a range of 65m, even in harsh outdoor environments.
Specs
| Model |
T-RS-RAD-N01-3 |
| Power Supply |
DC 10-30V |
| Maximum Power Consumption |
1.3 W |
| Temperature and Humidity Resistance of Transmitter Components |
-40°C~+80°C, 0%RH~95%RH (non-condensing) |
| Velocimetry Transmission Frequency |
24.00GHz |
| Speed range |
0.1 ~20m/s |
| Velocimetry Accuracy |
±2% |
| Speed Resolution |
0.01m/s |
| Ranging Frequency |
76GHz~81GHz |
| Water Level Range |
0.1~65m (Maximum range for water level measurement only) |
| Ranging Accuracy |
±1mm |
| Ranging Resolution |
0~20m |
| Height of Use |
0~20m |
| Waterproof Rating |
IP67 |
| Dimension |
210*108*130mm |
| Conventional Vertical Pole Size |
Upper and lower sections 1.5m each, calibre 114mm, total length 3m (optional) |
| Net Weight |
3.5kg |
| Common Vertical Pole Weight |
4kg |
Key Features:
- High-Precision Radar Measurement: 24GHz velocity measurement with 0.01m/s resolution and 80GHz level detection with ±1mm accuracy.
- Non-Contact Operation: Measures from above the water surface, avoiding clogging, corrosion, and sediment interference.
- Long Measurement Range: Supports up to 65m distance for large rivers, reservoirs, and open channels.
- Harsh Environment Ready: IP67 protection with stable operation from -40°C to +80°C.
- Ultra-Low Power Design: Only 1.3W power consumption, ideal for solar-powered remote monitoring systems.
- Anti-Interference Beam Design: 8° narrow beam reduces errors from walls, bridges, and channel structures.
Dimension Drawing (unit: mm)

Common Vertical Pole Installation

Core Technologies

Precision Millimeter-Level Dual-Frequency
- MeasurementHigh-Precision Detection: Utilizing advanced dual-frequency signal processing to achieve ±1mm water level accuracy, ensuring stable data even amidst minor surface ripples.
- Comprehensive Parameter Coverage: A single device integrates flow velocity and water level measurement. Our precision algorithms eliminate interference from complex flow patterns to provide reliable discharge monitoring.
- Millisecond Response Time: Rapidly captures hydrological changes, providing accurate data support for flood warning systems and automated irrigation.

Non-Contact & Maintenance-Free Design
- Corrosion and Silt Resistance: The meter is suspended above the water surface with zero fluid contact, completely eliminating scale buildup, siltation, and chemical corrosion.
- Ultra-Long Detection Range: Features an extensive 65-meter measuring range, making it easily adaptable to deep reservoirs, dams, and various complex terrains with flexible installation.
- Extreme Environment Protection: Engineered with an IP67 waterproof rating and a fully sealed metal enclosure, ensuring long-term stable operation in temperatures ranging from -40°C to +80°C.
Application
The radar flow meter is a piece of precision equipment that provides high-accuracy monitoring across diverse sectors, including reservoir monitoring, hydropower facilities, agricultural irrigation, and riverine water flow tracking. It is widely utilized in conservancy engineering, wastewater treatment plants, and urban drainage systems, as well as by research institutes and environmental laboratories seeking reliable, non-contact data.

FAQs
Q1: How does the radar flow meter work?
A1: It uses 24GHz Microwave Doppler for surface velocity and 80GHz ToF technology for water level. This dual-frequency radar ensures high-precision, non-contact flow measurement.
Q2: Why choose non-contact radar meters?
A2: Unlike submerged meters, radar remains unaffected by corrosion, sediment, or debris. It offers lower maintenance, longer lifespan, and high reliability during flood conditions.
Q3: What are the installation requirements?
A3: Mount the device perpendicularly using the adjustable bracket. Ensure a clear line-of-sight to the water surface, preferably in a section with stable, uniform flow.
Tips: How to improve Non-Contact Radar Flow Meter signal on calm water?
To improve the Non-Contact Radar Flow Meter signal on calm or "mirror-like" water, use the adjustable bracket to tilt the meter 15° to 20° against the flow direction.
On extremely smooth surfaces, radar waves often reflect away (specular reflection) rather than returning to the meter. By angling the Non-Contact Radar Flow Meter, you increase the probability of capturing backscattered signals from subtle surface ripples. This technique significantly enhances the sensitivity of the 24GHz velocity meter, allowing for reliable data collection in low-flow conditions as slow as 0.01m/s. Always ensure the device remains stable after adjustment to prevent vibration interference.