Portable Doppler Flow Meter for Precise Hydrological Flow Measurement Across Diverse Scenarios

The portable Doppler flow meter utilizes the ultrasonic Doppler effect to measure flow velocity and discharge. Suitable for various operating conditions—including rivers, open channels, and pipelines—it features high measurement accuracy, low power consumption, and long battery life. It simultaneously collects water level and temperature data, supports data storage and export, and is widely used in fields such as hydrological monitoring and eco-friendly aquaculture.

This portable Doppler flow meter is a lightweight, high-precision hydrological instrument that operates based on the ultrasonic Doppler effect. It calculates flow velocity by measuring the frequency shift resulting from the relative motion between the probe and the water, and accurately determines discharge using the velocity-area method. By eliminating traditional mechanical rotating parts, it avoids mechanical wear, significantly reducing the likelihood of failure and the frequency of routine maintenance. The device offers exceptional operational stability, resists environmental interference, and is suitable for measurements in complex aquatic environments.

The device is highly versatile, covering a wide range of applications such as "Sponge City" operations and maintenance, routine management under the "River Chief System," inland water quality monitoring, natural river inspections, industrial and agricultural aquaculture, and discharge outlet monitoring. It is particularly well-suited for measuring municipal underground sewage pipes, partially filled pipes, irregular river channels, and natural streams. Supporting concealed installation and long-term stable operation, it meets the needs for both short-term spot checks and long-term fixed-point monitoring. Equipped with a single flow velocity sensor, it is simple and convenient to install, lowering the technical barrier for field operations.

The portable Doppler flow meter integrates pressure-based water level sensors and temperature sensors, enabling the simultaneous measurement of multiple parameters—including flow velocity, instantaneous flow rate, cumulative flow, water depth, and water temperature—across a comprehensive measurement range. It offers a flow velocity measurement range of 0.020 m/s to 6.00 m/s and a water depth measurement capability of up to 10 meters. With accuracy and resolution meeting all relevant standards and errors kept within industry limits, it provides precise, reliable data for hydrological monitoring, environmental testing, and water conservancy operations, making it a preferred choice for portable hydrological testing.