Dayu Products Applied in Online Monitoring of Water Level, Flow, and Gas in the Jiuqu River Sewage Pipe Network
1. Time: March 18, 2025;
2. Location: Ziyang City, Sichuan Province;
3. Products Used: Ultrasonic Doppler flowmeter and gas concentration monitoring alarm.
Project Overview: This project is an online monitoring project for water level, flow, and gas in the sewage pipe network of the Jiuqu River in Ziyang City, Sichuan Province. To protect the ecological balance of the river, the relevant departments of Ziyang City decided to implement real-time monitoring of water level, flow, and gas concentration at the manhole openings of 40 inspection wells along the Jiuqu River.
Product Selection: Based on on-site inspections and the owner's requirements, due to varying pipe sizes (DN400~DN1200), the small ultrasonic Doppler flowmeter manufactured by Fuzhou Dayu Electronic Technology Co., Ltd. was selected for this project to collect real-time data on water level, temperature, instantaneous flow, and cumulative flow. An RTU selected by the owner is used for real-time data collection and transmission via RS485 to the owner's designated platform, facilitating data viewing and effective management for the owner.
Installation Requirements: The Doppler flowmeter sensor (current meter) is installed inside the inlet pipe below the inspection well. If there is silt or debris in the pipe, it should be cleaned. Based on actual site conditions, an L-shaped bracket should be designed and fabricated to extend the current meter sensor at least 0.5 meters into the pipe to measure water level, flow velocity, and temperature. The data is transmitted via RS485 to the transmitter, which is configured to convert it into flow data. The gas monitoring alarm (product from another company) is wall-mounted at the wellhead to monitor whether toxic gas concentrations in the inspection well exceed limits. The above data is collected and packaged by the RTU and uploaded to the local housing and construction department's comprehensive management platform.