How to measure a non full pipe flow meter with a sewage flow meter for the discharge outlet of a non full pipe

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1. How to measure the flow and water quality of the drainage network in real time? The real-time measurement of the flow and water quality of the drainage network is mainly achieved through the discharge monitoring system, which combines sensor technology, communication modules, and remote management platforms to complete data collection, transmission, warning, and visual analysis. The following is the specific implementation method:

1. Real time flow measurement method Sensor selection: Doppler ultrasonic flowmeter (contact type): suitable for full and non full pipe (such as sewage outlets that are mostly non full pipes) scenarios, the flow velocity is calculated by measuring the frequency change of the reflected wave of particles in the water flow, and the flow rate is obtained by combining the pipeline cross-sectional area. The overall height of the equipment is 3cm, and the minimum water level needs to be above 3cm to ensure that the probe is submerged in water. Radar flowmeter (non-contact): composed of a radar flowmeter and a radar water level gauge, it measures water surface velocity and water level height by emitting electromagnetic waves, suitable for scenarios where contact devices cannot be installed. Installation requirements: The selection of points should meet the conditions of smooth water flow and no backflow, and avoid mud or garbage blocking the probe. The Doppler ultrasonic flowmeter needs to ensure that the probe is completely immersed in water, while the radar flowmeter needs to avoid interference signals from obstacles.

2. Real time measurement method for water quality Monitoring parameters: Conventional five parameters: pH (acidity and alkalinity), turbidity (suspended solids conce

ntration), dissolved oxygen (water self purification capacity index), conductivity (ion concentration), water temperature (affecting biochemical reaction rate).

. Extended parameters: sludge concentration (SS, total suspended solids), chemical oxygen demand (COD), ammonia nitrogen, etc. (optional according to demand). Equipment configuration: Adopting a multi parameter water quality sensor, integrating the above parameter detection module, data is uploaded to the platform through the built-in GPRS module of the telemetry terminal. Sensors need to be calibrated regularly to ensure data accuracy.

III. System Composition and Data Transmission Hardware Modules: Flow and Water Quality Sensors: Collecting Raw Data.

. Image and video module: 4G camera captures real-time images of the flowmeter installation site, assisting manual verification of abnormal situations. Power supply system: solar power supply (in areas without mains power) or mains power supply (in stable scenarios). Communication equipment: The telemetry terminal sends data to the cloud through GPRS and supports breakpoint resume function. Software platform: After uploading data to the cloud server, users can remotely view real-time data, historical curves, and warning information through a computer or mobile browser. The platform supports SMS reminder function, which automatically notifies management personnel when the discharge exceeds the standard or the water quality is abnormal. 4. Core Functions and Application Scenarios Monitoring and Warning: Real time warning of excessive flow and water quality at sewage outlets, providing evidence for law enforcement. Assist in river inspection and assessment, optimize management efficiency through personnel

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