Multi-parameter Water Quality Monitor Enables Precise Online Monitoring of Multiple Water Indicators

The multi-parameter water quality monitor enables real-time online detection of key water quality indicators—such as temperature, pH, conductivity, dissolved oxygen, ammonia nitrogen, turbidity, and COD. Utilizing professional detection principles to ensure data accuracy, it supports sensor expansion, data storage and export, and universal communication interfaces, making it suitable for routine online monitoring across various water environments.

This integrated online monitoring device is widely used in environmental monitoring and water treatment engineering. It continuously collects critical water quality parameters, replacing traditional manual sampling and testing methods to effectively enhance the timeliness and accuracy of monitoring. The device integrates multiple mature detection technologies, employing specific principles for different indicators: COD is measured via the UV254 absorption method; turbidity via the scattered light method; ammonia nitrogen via the ion-selective electrode method; pH and conductivity via electrochemical salt bridge and contact electrode methods, respectively; and dissolved oxygen via the fluorescence lifetime method. The detection accuracy and resolution for all indicators meet industry standards, ensuring the stable output of valid monitoring data.

The monitor offers flexible configuration and expansion capabilities, allowing users to select and combine various water quality sensors to meet the specific needs of applications such as river and lake monitoring, industrial wastewater treatment, drinking water management, and aquaculture. Equipped with a comprehensive data logging system, the device records real-time and historical monitoring data as well as alarm logs around the clock. It supports local storage and data export, providing robust data support for analysis, source tracing, and regulatory compliance reporting.

Regarding data transmission and system integration, the monitor features a standard RS485 interface and is compatible with the Modbus-RTU communication protocol. This ensures excellent compatibility and scalability, allowing direct connection to industrial and monitoring equipment—such as PLCs, DCSs, SCADA/HMI software, and DTUs—to facilitate real-time data transmission and remote control. The device offers stable operation, ease of use, and low maintenance costs, making it suitable for long-term automated online monitoring of both natural and industrial water bodies; it serves as a core component for routine water quality management and aquatic environmental remediation.