1. Product Introduction

The RG-30 non-contact flow velocity measurement enables fast, stable, and accurate measurement of river flow velocity. The device comes with a vertical angle correction sensor, allowing reliable data acquisition during fixed installation or movement (e.g., cableway). Additionally, the radar sensor can measure flow velocity in rivers (with the option to input the angle to the main flow), channels, and flexible cableways.

2. Technical Specifications

Adaptable flow direction: Downstream or upstream (selectable)

River/channel type options:

1) Extremely flat and uniform water surface

2) Generally flat river/channel

3) Typical river/channel

4) Turbulent river/channel

5) Extremely turbulent river/channel

6) Splashing water flow

Climate adaptability: All-weather operation, suitable for heavy rain and snow conditions

Control method: Hardware trigger and software protocol parallel control

Radar band and frequency: Ka-band; 24.160 GHz (critical requirement)

Data acquisition time: Adjustable from 5 to 240 seconds

Measurement interval setting range:

Mode 1: Adjustable from 8 s to 5 h;

Mode 2: External device hardware trigger;

Mode 3: RS485, SDI-12 port command;

Flow velocity data output methods in a single measurement:

1) Moving average

2) Outlier-removed average

3) Minimum value average

4) Median average

Radar beam angle: 12°

Radar vertical angle adjustment range: 30-60° (auto-compensated)

Vertical angle auto-tracking resolution and accuracy: Resolution 0.1°; Accuracy 1°

Radar horizontal angle: Configurable

Distance from radar probe to water surface: 0.5 m to 30 m

Flow velocity measurement range: 0.15 m/s to 15 m/s

Resolution and error: ±0.02 m/s; ±1%

Analog interface: 4-20 mA, compatible with integrated water level, temperature, meteorological, and other environmental sensors

Digital interfaces: RS232; RS-232 (TTL); RS-485A; RS-485B (1200 Baud -115200 Baud); SDI-12 (1200 Baud)

Transmission baud rate: 1200-192000

Automatic output results: Flow velocity, angle, signal-to-noise ratio, and data quality analysis (9 signal quality sub-items), supports multiple ASCII protocols.

Restart modes:

1) Hard restart: Clears all historical data from the previous measurement in cache and starts calculating current flow velocity with new data.

2) Soft restart: Retains all historical data from the previous measurement in cache and combines it with new data to calculate current flow velocity.

Simulation debugging function: Dynamic graphical display of signal quality and noise for easy adjustment.

Command and integration function:

For complex cross-sections, one host can command two other radar flow velocity sensors of the same type to achieve synchronized operation of three sensors.

Power supply: 5.5-30 VDC

Power protection: Reverse polarity and overvoltage protection

Current: <130 mA (during measurement)

During sleep: <1 mA

Operating temperature: -35°C to +60°C; Storage temperature: -40°C to +60°C

Built-in lightning protection standard: 0.6 kWPpp; Field protection rating: IP68