System Introduction/ system introduction
The sewage discharge monitoring system KNF-400C is developed based on the relevant requirements of water quality monitoring for urban garbage treatment stations, sewage discharge, enterprise discharge, etc. It provides a basis and support for strengthening the safety management of urban discharge and is a water quality online monitoring system mainly aimed at COD, ammonia nitrogen PH、 Implement online and early warning for dissolved oxygen, turbidity, temperature, etc. The product adopts modular design, which is easy to install and maintain, suitable for monitoring needs of single point and large-scale distribution.
The system consists of important components such as sensor units, data acquisition and transmission units, seven inch touch screen display units, and IoT cloud platforms. The system can achieve automatic sampling, real-time online monitoring and early warning of enterprise wastewater, urban wastewater, rural wastewater, and aquaculture wastewater


System Schematic/ System Schematic
The KNF-400C sewage monitoring system is a product developed, produced, and operated by Kenaf Technology based on online water quality monitoring sensors, data collection and transmission, cloud platform data management, and other aspects. Shenzhen Kenaf has a long-term, stable, and effective solution for monitoring sewage discharge characteristics. This system can achieve digital management of the entire process of monitoring and analysis, data collection and transmission, equipment control, monitoring and early warning of sewage discharge, promoting the informatization and modernization of water environment management and comprehensively improving management level.
system composition/ System composition
The main monitoring items of this system include water temperature COD、 Emission indicators such as ammonia nitrogen, pH value, conductivity of oil and suspended solids (SS) in water. The system sensors are easy to install, plug and play, and distributed in a networked manner. In addition to the basic key water quality factors, users can customize and add other monitoring parameters and cooperate with the (fish method) biological toxicity prediction system to complete early warning work.

Application scope/ Scope of application
System Characteristics/ System Features
1. Integrated structure, modular design, small size, suitable for large-area deployment
2. Free docking protocols such as HJ212 protocol, supporting data reporting to relevant departments
3. No need for reagents, ultra-low consumption, ultra-low maintenance, and significant savings in operation and maintenance costs
4. Adopting internationally advanced water quality sensors with stable performance and long-term online measurement capability
5. During the monitoring process, there will be no secondary pollution to the environment, and real-time online monitoring of the Internet of Things is available
6. High cost-effectiveness, high system stability, easy installation and maintenance, and targeted configuration for different water bodies
Product parameters/ Technical indicators
Parameter indicators |
measuring principle |
measuring range |
resolution |
accuracy |
power consumption |
data output |
Supply Voltage |
protection grade |
---|---|---|---|---|---|---|---|---|
dissolved oxygen |
Fluorescence photometry |
0~20mg/L |
0.01mg/L |
±2%F.S. |
About 0.5W |
RS485 |
12-24VDC |
IP68 |
salinity |
electrochemistry |
0~70PSU |
0.1mg/L |
±1.5%F.S. |
- |
RS485 |
12-24VDC |
IP68 |
PH |
Glass electrode method |
0~14ph |
0.01ph |
±0.05ph |
About 0.3W |
RS485 |
12-24VDC |
IP68 |
ORP |
Platinum electrode |
0~±1999mV |
1mV |
1mV |
About 0.5W |
RS485 |
12-24VDC |
IP68 |
temperature |
thermocouple |
0~50℃ |
0.1℃ |
±0.5℃ |
Inside the electrode |
RS485 |
12-24VDC |
IP68 |
conductivity |
Conductivity cell method |
0~5000µS/cm |
1µS/cm |
1% |
About 0.5W |
RS485 |
12-24VDC |
IP68 |
COD |
spectrometry |
0.3~500mg/L |
0.01mg/L |
±5%F.S. |
About 1.5W |
RS485 |
12-24VDC |
IP68 |
turbidity |
90 º scattered light |
0~1000NTU |
1NTU |
±2%F.S. |
About 0.6W |
RS485 |
12-24VDC |
IP68 |
Ammonia nitrogen |
Ion selection method |
0~100mg/L |
0.1mg/L |
±5%F.S. |
About 1.2W |
RS485 |
12-24VDC |
IP68 |
Data reporting |
The adjustable reporting time interval can be uploaded to the cloud via GPRS |
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Data Storage |
The display screen is equipped with a 128MB storage chip, which can be inserted into a USB flash drive to export data tables. At the same time, the cloud platform can also store and export data tables |
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data output |
RS485 (Modbus RTU protocol), 4G wireless output, NB |
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working voltage |
AC220V @DC12-24V |
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Display System |
7-inch touch LCD collector, built-in large capacity storage USB drive export, data calibration and compensation functions, curve drawing and alarm record query |
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protection box |
Adopting anti radiation coating, built-in power distribution system, data acquisition system, data transmission system, outdoor rainproof, dustproof, insect proof function, column clamp installation, protective box size: 300X250X470mm |
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Monitoring (optional) |
Optional Hikvision and Fluorite monitoring access platforms can be used to monitor on-site images at any time |
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Maintenance Cycle |
About 6-18 months or depending on the actual situation on site |
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Cloud platform software |
Software copyright registration rights, using Alibaba Cloud servers, real-time collection, storage, and synchronized publishing of data to LED display terminals, with functions such as PC, mobile, WeChat binding, and warning. Independent account with mobile app |
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Software and Certification |
Having a software registration certificate, ISO9001、ISO14001、 Measurement and testing report, CMA testing report. |
Kenaf Water Quality Monitoring Cloud Platform Software/ ENVIRONMENT
Kenafu Technology's "Water Quality Monitoring Cloud Platform" is an efficient, stable, and secure application platform built between IoT applications and monitoring devices. The main monitoring center provides an intuitive user interface, through which you can manage all devices of your user, such as querying real-time data, historical data, connection status, alarm status, alarm records, real-time positioning, historical trajectory, flow query, switch control, data distribution, and other functions.