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MG3500 Series
The MG3500 Residual Chlorine/Chlorine Dioxide Analyzer is an intelligent online water quality instrument built around a microprocessor and advanced constant-voltage measurement technology. By maintaining a stable potential across platinum and reference electrodes, it eliminates the influence of sample resistance and redox potential. The micro-current signal maintains a stable linear relationship with the disinfectant concentration in the water sample, ensuring accurate and repeatable readings. Designed for continuous monitoring of drinking water, tap water, swimming pools, and cooling water systems, the analyzer supports RS485/Modbus digital networking, 4–20 mA analog output, and relay control, ensuring seamless integration into modern treatment and distribution processes.
The MG3500 Residual Chlorine/Chlorine Dioxide Analyzer employs advanced constant-voltage measurement technology to maintain a stable potential across platinum and reference electrodes. Through uninterrupted dynamic potential control by the secondary instrument, the system eliminates the inherent resistance and oxidation-reduction potential influence of the measured water sample. This ensures a stable linear relationship between the electrode current signal and measured water sample concentration, delivering very stable zero-point performance and highly reliable quantitative results.
Adopting innovative electrode construction, the MG3500 requires no replacement of electrolyte membrane heads, eliminating membrane consumables and secondary pollution risks. The digital signal sensor architecture offers strong anti-interference capability and extended transmission distance, ensuring signal integrity across complex plant environments. Combined with its inherently low maintenance requirements, the analyzer significantly reduces lifecycle operating costs while sustaining high measurement stability over time.
Equipped with RS485 signal output and standard Modbus communication protocol, the MG3500 Residual Chlorine/Chlorine Dioxide Analyzer supports effortless integration and networking with diverse terminal devices, SCADA systems, and central control platforms. This robust connectivity enables real-time data acquisition, remote parameter adjustment, and centralized management of disinfection processes across drinking water plants, distribution networks, and industrial cooling systems.
General Specifications | Details |
Measurement Range | 0~20mg/L Oxygen saturation: 0~100% |
Resolution | 0.001mg/L |
Basic Error | Better than +1%F·S or +0.05mg/L, whichever is larger |
Stability | Under normal pressure and constant temperature, weekly drift < 2%F·S |
Power Supply | 24VDC; 220VAC |
Output Signal | 4-20mA; 4-20mA+HART; RS485/232; Relay |
Installation Method | Flow cell |
Ingress Protection | IP65; IP68 |
Process Pressure | Atm |
Process Temperature | 0~45℃ |
Operating Environment | Ambient temperature: -10~60℃ Relative humidity: 90% No strong magnetic interference around installation environment |
In drinking water treatment facilities and municipal tap water distribution networks, the MG3500 Residual Chlorine/Chlorine Dioxide Analyzer performs continuous online monitoring of disinfectant residuals. It ensures that chlorine or chlorine dioxide levels remain within regulatory limits, guaranteeing microbiological safety from treatment plant to end-user tap while optimizing chemical dosing to avoid over-treatment.
For swimming pools and recreational water facilities, the MG3500 maintains precise control of residual chlorine and chlorine dioxide concentrations. By preventing both under-disinfection and excessive chlorination, it protects bathers from waterborne pathogens while minimizing eye irritation and skin discomfort, ensuring a safe and comfortable aquatic environment.
Integrated with chlorine dioxide generators, the MG3500 provides real-time concentration feedback to regulate generation efficiency and output stability. Accurate chlorine dioxide measurement enables precise dosing control for downstream disinfection processes, ensuring consistent antimicrobial performance across food processing, pharmaceutical, and general industrial applications.
In cooling water recirculation loops and general industrial water treatment, the MG3500 tracks residual chlorine and chlorine dioxide to inhibit biofilm formation and microbial proliferation. It is ideally suited for clean process water and general water areas; however, it is not recommended for sewage or wastewater containing copper ions, manganese ions, or chromium ions, which may interfere with electrode measurement.
The MG3500 employs a constant-voltage measurement method using platinum and reference electrodes. Unlike traditional sensors that rely on consumable electrolyte membranes, the instrument maintains a stable electrode potential through dynamic control by the secondary instrument. This design eliminates the need for membrane head replacement, prevents secondary pollution, and ensures long-term stability with minimal maintenance.
The MG3500 Residual Chlorine/Chlorine Dioxide Analyzer is ideally suited for drinking water, tap water, swimming pools, cooling circulating water, and chlorine dioxide generator effluent. However, it is not recommended for sewage or wastewater containing copper ions, manganese ions, or chromium ions, as these substances can interfere with the electrode measurement and compromise accuracy.
The analyzer is equipped with a digital signal sensor featuring strong anti-interference capability and long transmission distance. It supports RS485 signal output with standard Modbus protocol, as well as 4–20 mA analog output and relay contacts. This enables seamless integration with SCADA systems, PLCs, and various terminal devices for centralized monitoring and control.
Looking for a maintenance-free, high-precision residual chlorine or chlorine dioxide monitoring solution for your water treatment plant, distribution network, or pool facility? The MG3500 Residual Chlorine/Chlorine Dioxide Analyzer delivers membrane-free operation, stable zero-point performance, and seamless digital connectivity to safeguard your water quality around the clock. Contact our technical team today for application guidance and a tailored quotation. Click "Inquire" to review detailed specifications, or add the product to your basket for immediate delivery!
