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The MG3200 Polarographic Dissolved Oxygen Analyzer is a microprocessor-driven Online Water Quality Monitor engineered and manufactured by Mega-tek Instrument (Chengdu) Co., Ltd., a leading China-based supplier of industrial water quality testing equipment. This professional Industrial DO Analyzer is designed for real-time, continuous monitoring and control of dissolved oxygen content in aqueous solutions, and it is widely applied in municipal sewage treatment, industrial wastewater disposal, livestock breeding water management and domestic water supply systems.
Featuring a high-precision polarographic sensor with platinum (Pt) cathode, Ag/AgCl anode and silicone rubber permeable membrane, the analyzer applies a 0.68V polarization voltage for accurate DO detection, with the diffusion current converted into precise oxygen concentration readings. It is equipped with an LCD display and intelligent operation menu, plus automatic/manual temperature compensation and electrode auto-calibration functions. The MG3200 Polarographic Dissolved Oxygen Analyzer integrates advanced phase method technology and Mega-tek’s imported manufacturing process, delivering stable performance, low maintenance and high anti-interference capacity for long-term on-site operation.
This section decodes the core user benefits of the MG3200 Polarographic Dissolved Oxygen Analyzer and its unique technical features that solve practical pain points in water treatment DO monitoring, distinguishing it from conventional DO analysis equipment.
Cut long-term maintenance costs: No need to replace the electrolyte membrane head during the whole service life, eliminating consumable purchase and manual replacement labor costs.
Simplify on-site installation: The analyzer does not consume oxygen during measurement, with no flow rate or agitation requirements, omitting the need for additional supporting equipment.
Ensure accurate detection in complex water: Unaffected by H₂S, pH, CO₂, NH₄⁺, Cl⁻, Cl₂ and other interfering substances, maintaining reliable DO readings in harsh industrial water environments.
Enable intelligent system integration: Standard Modbus communication protocol with RS485 signal output supports seamless networking with various terminal control devices, meeting intelligent water treatment management needs.
Adopts state-of-the-art phase method technology and imported manufacturing process for ultra-high stability (weekly drift <2%FS under normal pressure and constant temperature).
Equipped with a digital signal Polarographic DO Sensor with strong anti-interference ability and long-distance signal transmission, adapting to industrial on-site magnetic interference environments.
Configurable current/voltage output, freely adjustable measurement range and high/low limit alarm prompts with two sets of relay control switches (adjustable hysteresis range).
Multiple signal output modes and dual power supply options, providing flexible configuration for different on-site application requirements.
Measurement Range | Dissolved oxygen:0~25mg/L0~200ug/L |
Oxygen saturation:0~100% | |
Resolution | Dissolved oxygen:0.001ug/L0.001mg/L |
Oxygen saturation:0.1% | |
Basic Error | Dissolved oxygen:±0.2mg/L |
Temperature:±0.5℃ | |
Stability | Under normal pressure and constant temperature,weekly drift<2%FS |
Power Supply | 24VDC |
220VAC | |
Output Signal | 4-20mA |
4-20mA+HART | |
RS485/232 | |
Relay | |
Installation Method | Immersion type |
Flow cell | |
Flange | |
Ingress Protection | IP65 |
IP68 | |
Process Pressure | Atm |
High pressure special inquiry | |
Process Temperature | 0～45℃ |
0～100℃ | |
High temperature special inquiry | |
Operating Environment | Ambient temperature:-10～60℃ |
Relative humidity:90% | |
No strong magnetic interference around installation environment |
As a versatile Water Quality Analysis Instrument, the MG3200 Polarographic Dissolved Oxygen Analyzer covers the whole process of water treatment and breeding water quality control, and its core application scenarios include:
Municipal sewage treatment plants and domestic water supply systems
Industrial wastewater treatment workshops of various manufacturing industries
Aeration tanks and aerobic/anaerobic digestion tanks in biological water treatment processes
Effluent water quality real-time monitoring of sewage treatment facilities
Livestock and poultry breeding water quality control and aquaculture DO monitoring
It is equipped with a high-precision polarographic sensor, which uses platinum (Pt) as the cathode, Ag/AgCl as the anode, 0.1M KCl as the electrolyte and silicone rubber as the permeable membrane, with a 0.68V polarization voltage applied for DO detection.
The standard version is suitable for atmospheric pressure and 0～45℃ process conditions, and high pressure/high temperature (0～100℃ or above) versions are available via special inquiry to meet personalized on-site needs.
It is designed with automatic and manual dual temperature compensation modes. The thermistor detects the solution temperature in real time for automatic compensation, and the manual mode can be adjusted according to actual on-site requirements to ensure measurement accuracy.
The MG3200 Polarographic Dissolved Oxygen Analyzer is the ideal choice for efficient, cost-effective and reliable online DO monitoring in water treatment and breeding projects. As the direct manufacturer, Mega-tek provides global customers with one-stop services including product customization, on-site installation guidance and after-sales technical support, and can tailor high temperature/high pressure versions according to your industry characteristics and actual monitoring needs.
We offer factory-direct ex-factory prices and a perfect after-sales service system to ensure the stable operation of your equipment. If you want to get the detailed quotation of the MG3200 Polarographic Dissolved Oxygen Analyzer or consult customized DO monitoring solutions, please contact our professional engineering team immediately via the inquiry channel, and we will reply you with a detailed solution within 24 hours!
