Radar Flow Meter

Product Brochure

Adopting advanced planar microwave radar technology, this radar flow meter measures water flow velocity and water level in a non-contact manner. With built-in software algorithms, it calculates and outputs real-time cross-section flow and cumulative flow, suitable for flow measurement in rivers, irrigation canals and other scenarios.

Equipped with 24GHz microwave technology for velocity and water level detection, the device is immune to temperature gradients, pressure, air density, wind and other meteorological factors, as well as sewage corrosion and sediment interference, enabling stable operation around the clock. Featuring low power consumption, compact size and easy installation & maintenance, it is well-suited for field measurement environments.

The radar flow meter integrates a radar velocity sensor and a radar water level sensor. The velocity sensor collects the surface flow velocity of water, and calculates the average flow velocity of the water cross-section via professional models. Combined with the water level data measured by the water level sensor and cross-section parameters, the cross-sectional flow area is obtained.

The flow is calculated by the formula:

Flow = Average Flow Velocity × Cross-sectional Flow Area × Correction Factor

The correction factor is determined based on actual field conditions.

The antenna beam angle of the water level sensor is 14×10°, whose detection area on the water surface is approximately circular. The beam angle of the velocity sensor is 14×32°, forming an elliptical detection area. A clear understanding of the radar coverage helps select proper installation positions and avoid interferences such as swaying branches on river banks.

Product Advantages & Features

n Non-contact measurement: Free from the impact of temperature, humidity, pressure, wind, sewage corrosion and sediment.

n Multi-parameter detection: Outputs flow velocity, water level, flow and other data to adapt to diverse measurement conditions.

n Standard communication interface: Equipped with RS485 standard data communication port.

n High-level protection: IP68 protection grade, with lightning protection and reverse connection protection design for all field environments.

n Low power consumption: Low energy consumption, high reliability and maintenance-free performance.

n Built-in water level filtering algorithm: Ensures accurate and stable data, resisting interference from water surface fluctuations and floating objects.

Velocity Measurement Range：0.1～20 m/s

Velocity Measurement Accuracy：Less than ±0.01 m/s or ±1%FS (whichever is larger)

Velocity Resolution：0.001 m/s

Ranging Range：0.1～40 m

Water Level Accuracy Class：Class 1

Water Level Resolution：1 mm

Transmit Frequency：24.000～24.250 GHz

Communication Interface：1-channel RS485

Communication Protocol：MODBUS-RTU / Custom Protocol

Start-up Stabilization Time：≤ 5 s

Antenna Beam Angle：Velocity sensor: 14×32°; Water level sensor: 14×10°

Data Update Cycle：1 s

Cross-section Setting：Cross-section types and parameters configurable via communication

Flow Direction Configuration：Forward, reverse or bidirectional monitoring available

Attitude Monitoring & Correction：Reads pitch and roll angles, automatically calibrates velocity data

Extended Configuration：Supports output of operating frequency and sampling times for equipment status monitoring

Supply Voltage：DC 10V～24V

Power Consumption (12V Power Supply)：Operating average current: ≤ 130 mA;

Sleep average current: ≤ 6 mA

Protection Grade：IP68

ESD Immunity Level：Level 3

Surge Immunity Level：Level 4

Level Bubble：Diameter ≥ 25 mm

Housing Material：Stainless steel

Surface Treatment：Electrostatic spraying, silver-grey finish

Overall Dimension (Meter)：200mm × 124mm × 102mm

Bracket Dimension：100mm × 100mm × 55mm

Total Weight (Meter + Bracket)：2.15 kg

Operating Temperature：-30℃ ～ 80℃

Storage Temperature：-40℃ ～ 80℃