Working Characteristics and Application Advantages of Ultrasonic Open-Channel Flow Meters
2025-12-19
Ultrasonic open-channel flow meters are currently widely used devices in the field of discharge outlet, water intake, and channel flow measurement. They typically emit ultrasonic signals at frequencies of 100 kHz and 64 kHz to carry out measurements. This equipment is often paired with throttling devices such as Parshall flumes, triangular weirs, and rectangular weirs. Its core operating principle relies on measuring the time difference in ultrasonic wave transmission to precisely determine the water level upstream of the throttling device. The water flow rate is then calculated using a pre-set formula or by consulting a lookup table, and finally, the measured flow rate is directly displayed.
It boasts numerous practical advantages and offers flexible and diverse power supply options. In addition to being powered by 220V AC, it can also be paired with a 12V solar power system. When installed in outdoor environments, the solar power system provides a convenient power source, facilitating the decentralized deployment of devices and easily meeting the power requirements of various installation scenarios. The main unit supports remote configuration, allowing users to conveniently set relevant parameters via remote operation, thereby effectively reducing installation and maintenance costs. At the same time, this device features cost-effectiveness and high reliability, and is unaffected by impurities or entanglements in water bodies, requiring relatively little routine maintenance.
In addition, the device’s main unit can upload measurement results—complete with timestamp annotations—to a server via its built-in 4G wireless transmission module, facilitating data traceability and enabling remote monitoring of flow data. This provides crucial data support for decision-making by relevant management authorities and organizations. Thanks to these features, this flow meter can also serve as an important technological tool in digital and smart twin projects related to urban water supply and drainage, environmental protection, and water resources management.
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