Application of Dayu Electronic Doppler Velocimeter in Partial-Fill Measurement of DN400 Sewage Pipe
In urban drainage systems and industrial wastewater treatment, flow measurement in partially filled sewage pipes has always been a challenge. Today, let's discuss how the Dayu Electronic compact Doppler velocimeter delivers outstanding performance in a DN400 sewage pipe!
The customer needed to measure the flow rate of a DN400 sewage pipe, but the water level was typically only one-third or half of the pipe's diameter, and the sewage contained some sediment. There was no suitable installation position behind the valve, so a compact Doppler flowmeter was chosen for installation at the upstream outlet. On-site power was available, and data did not need to be transmitted remotely; only local viewing was required.
This velocimeter is well-suited to the application scenario thanks to three core advantages: first, ±2% measurement accuracy in partially filled pipes, which eliminates the influence of flow fluctuations through Doppler frequency shift analysis technology; second, strong anti-interference capability, ensuring stable operation even when the water contains sediment or air bubbles; third, easy installation, requiring only 3 cm of probe immersion to operate, with no need for pipe cutting or modification.
Applications and Advantages
1. Urban drainage systems: Suitable for flow monitoring in partially filled sewage pipes, providing real-time insight into drainage conditions, quickly detecting blockages or overflows, and ensuring drainage safety especially during extreme weather such as heavy rain.
2. Industrial wastewater treatment: Capable of accurately measuring flow rates of sewage containing high concentrations of suspended solids and oils, unaffected by internal pipe wall deposits, and adaptable to complex fluid environments.
To ensure long-term stable operation, three points should be noted: reserve straight pipe sections of 10 times the pipe diameter upstream and 5 times downstream to stabilize the flow; pre-enter parameters such as pipe diameter and fluid density to calibrate the algorithm; regularly clean sediment deposits from the probe, and for high-sediment environments, it is recommended to use a model with a wear-resistant coating.
The Dayu Electronic Doppler velocimeter, with its high accuracy, strong adaptability, and real-time monitoring capability, has become a mainstream solution for large-diameter flow measurement, especially suited for complex scenarios such as urban drainage and industrial wastewater. In the future, with continuous optimization of sensor technology and algorithms, its application scope will further expand to more extreme operating conditions.