Radar Ultrasonic Flow Meter
Radar Ultrasonic Flow Meter
  1. Radar Ultrasonic Flow Meter
  2. Radar Ultrasonic Flow Meter

Underground Pipeline Flow Meter

The QYF-RA02 Underground Pipeline Flow Meter is specifically designed for continuous flow and water level monitoring in urban underground drainage networks, stormwater systems, rivers, and wastewater outfalls. By integrating advanced radar and ultrasonic measurement technologies, it delivers accurate flow and water level measurements under challenging conditions, including both full-pipe and partially filled pipe applications, while eliminating blind-zone limitations. Its compact, rugged design enables quick installation, requires minimal maintenance, and ensures reliable long-term operation even in harsh field environments.

underground pipeline flow meterThe QYF-RA02 Radar Ultrasonic Flow Meter is an intelligent online monitoring device specifically designed for underground drainage networks. It provides accurate flow measurement across all water level conditions, including both partially filled and full-pipe applications.

Under partially filled pipe conditions, the meter utilizes 24 GHz or 60 GHz radar technology to measure flow velocity and water level. Built-in hydraulic models and advanced algorithms automatically calculate instantaneous flow rate and totalized flow. When the water level rises to a high level or the pipe becomes completely full, the device automatically switches to a high-precision pressure-based level sensor combined with 2 MHz ultrasonic Doppler technology to measure water level and flow velocity, ensuring accurate calculation of both instantaneous and cumulative flow.

This hybrid underground flow meter delivers reliable measurement performance that is unaffected by ambient temperature, atmospheric pressure, surface vapor, water contaminants, or sediment.

The QYF-RA02 features a compact design, ultra-low power consumption, and excellent waterproof and corrosion-resistant construction. It is easy to install, requires minimal maintenance, and combines the advantages of both contact and non-contact measurement technologies to provide comprehensive, blind-zone-free monitoring in demanding underground environments.

Measurement data is transmitted via an RS485 interface using the standard MODBUS RTU protocol, ensuring seamless integration with SCADA systems, PLCs, and other industrial control platforms.

The Radar Ultrasonic Flow Meter consists of three main components: a radar flow measurement module, an ultrasonic flow measurement module, and a control unit. The operating principle is illustrated in the diagram.

  • Compact Design – Specifically engineered for flow monitoring in underground drainage networks, with a small footprint for easy installation in confined spaces.
  • Low Maintenance – Non-contact measurement technology minimizes maintenance requirements and reduces operating costs.
  • Reliable Operation – Unaffected by debris, sediment, floating objects, or other contaminants in the water, resulting in low failure rates and dependable long-term performance.
  • Easy Configuration – No computer is required for setup. Parameters can be configured wirelessly via a Bluetooth-enabled mobile app, making commissioning fast and convenient.
  • Compatible with Multiple Channel Profiles – Supports a wide range of cross-sectional geometries, including circular, rectangular, and U-shaped channels.
  • IP68 Protection – Fully waterproof design for continuous operation in harsh underground environments.
  • Comprehensive Measurement Coverage – Integrates radar, ultrasonic, and pressure sensing technologies to provide accurate flow measurement under all operating conditions, including partially filled pipes, full pipes, and surcharged manholes.
  • Accurate and Comprehensive Data – Delivers high-accuracy measurements of flow velocity, water level, instantaneous flow rate, and totalized flow, meeting the requirements of diverse drainage network applications.
  • Low Power Consumption – Supports solar power or battery operation, enabling flexible installation with minimal maintenance and long service life.

  • Flow velocity, water level, and flow measurement in underground drainage networks, wastewater outfalls, box culverts, and similar drainage infrastructure.
  • Flow monitoring and flow calculation for open channels, drainage channels, and other short-range water conveyance systems.
  • Water and wastewater treatment applications, including municipal water supply systems and wastewater discharge monitoring.underground pipeline flow meter application

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