The rainwater and sewage drainage pipe network water quality monitoring system aims to monitor the water quality status of the rainwater and sewage drainage pipe network in real time. The system deploys multiple water quality sensors at key nodes of the pipeline network, which can quickly and accurately detect multiple indicators such as acidity, chemical oxygen demand, and ammonia nitrogen. Through IoT technology, the collected data is transmitted in real-time to the monitoring center, making it convenient for management personnel to keep track of water quality dynamics at any time. Once there is an abnormality in water quality, the system immediately alerts and helps to trace and investigate the source of pollution in a timely manner. This helps to ensure the normal operation of urban drainage systems, prevent illegal discharge of sewage, protect the urban water environment, and provide strong support for urban water resource management and pollution prevention and control.
Rainwater and sewage drainage network water quality monitoring systemIntended to monitor the water quality of the rainwater and sewage drainage network in real-time. The system deploys multiple water quality sensors at key nodes of the pipeline network, which can quickly and accurately detect multiple indicators such as acidity, chemical oxygen demand, and ammonia nitrogen. Through IoT technology, the collected data is transmitted in real-time to the monitoring center, making it convenient for management personnel to keep track of water quality dynamics at any time. Once there is an abnormality in water quality, the system immediately alerts and helps to trace and investigate the source of pollution in a timely manner. This helps to ensure the normal operation of urban drainage systems, prevent illegal discharge of sewage, protect the urban water environment, and provide strong support for urban water resource management and pollution prevention and control.

1Rainwater and sewage drainage network water quality monitoring systemProduct Overview
The low-power collection microsystem of the pipeline network directly transmits JSON data to the designated server through 4G and supports MQTT protocol transmission.
Other formats of data are transmitted to our company's cloud platform via 4G. Our company provides an HTTP interface, and other platforms obtain data through this interface.
The built-in 8GB TF card can store the read data in the memory card.
The baud rate of each serial port communication can be modified through commands, and the required sensor parameters can also be added, modified, and deleted through commands.
2、 Functional Features
1. Equipped with a built-in 3.6V 152AH lithium battery, ensuring continuous operation for 3 years.
2. IP68 waterproof rating, no need to worry about pipeline swelling.
3. There are two 485 interfaces, one for device configuration and one for sensor reading
4. Supports Modbus RTU sensor reading and data saving function
5. The serial port baud rate can be independently modified
6. The sensor communication port supports a maximum of 32 nodes
3、 Specification parameters
Working voltage: 3.6V with built-in lithium battery
Product size: 204x82x162mm
Usage environment: Temperature: -40-85 ° C, Humidity: 5% -95%
Communication type: RS485
Communication protocol: Modbus RTU protocol
Communication distance: 300 meters
Baud rate: 1200-115200bps, default 9600 8N 1
Protection level: RS-485 interface with 600W lightning surge protection per line, ± 15KV ESD protection
4、 Sensor parameters
| serial number |
sensor type |
measurement range |
Measuring principle |
measurement accuracy |
configuration |
| 1 |
temperature |
0~50℃ |
High precision digital sensor |
±0.3℃ |
√ |
| 2 |
conductivity |
0~5000uS/cm,0~10000uS/cm |
Contact electrode method |
± 1.5% |
√ |
| 3 |
pH |
0~14(ph) |
Electrochemistry (salt bridge) |
± 0.1PH |
√ |
| 4 |
dissolved oxygen |
0~20mg/L |
Fluorescence lifetime method |
± 2% |
|
| 5 |
ammonia nitrogen |
0-1000.00mg/L (default) 0-1000mg/l/(customizable) |
Ion selective electrode method |
10% of the reading, ± 0.5 ℃ |
|
| 6 |
turbidity |
0~40NTU (optional) |
scattered light method |
± 1% |
|
| 7 |
COD |
0~500mg/ L |
UV254 absorption method |
±5% |
|