Wuxi Daoxin Technology Co., Ltd.
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Wuxi Daoxin Technology’s DX-DO3000 Online Dissolved Oxygen Analyzer is a professional-grade environmental monitoring instrument, purpose-built for long-term deployment in natural water bodies such as rivers, lakes, reservoirs, and wetlands. It supports both luminescent (optical) and membrane-based sensing principles, providing flexibility to meet the diverse demands of field monitoring applications.
The luminescent sensor uses optical fluorescence technology, which requires no membrane or electrolyte and offers a long service life with minimal maintenance. With a resolution of 0.01 mg/L and accuracy up to ±1% FS, the analyzer delivers highly precise readings, essential for detecting subtle oxygen fluctuations linked to ecological health or pollution events.
Its automatic temperature compensation (0–80°C) ensures accurate measurements across varying climates and seasons. The wide operating temperature range (-10 to 60°C) and corrosion-resistant housing make it ideal for harsh outdoor deployments, including unattended field stations and buoy-mounted installations.
The analyzer is compatible with 4-20mA and RS485 (Modbus RTU) communication, allowing for seamless integration into environmental telemetry platforms, SCADA systems, or government-managed water quality databases. It supports solar-powered operation when connected to external DC24V sources, making it suitable for remote and off-grid areas.
| Temperature Compensation Range | 0 ～ 80 ℃ (Automatic Or Manual Compensation) |
| Measurement Accuracy | ±1% FS Or ±0.1 Mg/L |
| Installation | Immersion / Flow-through (Flange Option) |
| Sensor Type | Fluorescence Method: No Membrane, Resistant To Contamination; Membrane Method: Replaceable Diaphragm (electrolyte Required) |
| Response Time | ≤ 10s (Seconds) |
| Flow Velocity | ≥ 0.2 M/s (flow Required For Membrane Method; Still Water Available For Fluorescence Method) |
| Measurement Range | 0-20 Mg/L (Multiple Ranges Optional) |
| Resolution | 0.01 Mg/L |
| Operating Temperature | -10 ～ 60 ℃ |
| Measurement Principle | Luminescent Or Polarographic Membrane (Membrane Method) |
The DX-DO3000 plays a key role in surface water quality monitoring programs, often led by environmental protection bureaus, research institutes, or municipal water authorities. It provides continuous dissolved oxygen data, enabling real-time assessments of water body health and early warnings for hypoxia, eutrophication, or organic pollution.
In rivers and streams, the analyzer helps assess oxygen stratification, monitor the impact of upstream industrial or agricultural discharges, and track seasonal changes that affect aquatic life. By placing the sensor at critical cross-sections, users can generate oxygen profiles for environmental assessment reports.
In lakes and reservoirs, where stratification and thermal layering affect oxygen levels at various depths, the DX-DO3000 supports vertical profiling through submersible deployment. It is ideal for tracking oxygen depletion in bottom waters (hypolimnion), which could lead to fish kills or harmful algal blooms.
In urban stormwater outfalls, the device monitors DO levels in runoff channels and retention ponds, helping cities detect illicit discharges and assess pollution loads. The remote monitoring capabilities allow data collection without sending personnel onsite daily, improving efficiency and safety.
This analyzer is also used in environmental research and academic field studies, offering long-term, stable measurements needed for ecological modeling, restoration project evaluation, or habitat conservation planning. Its flexibility and durability make it a trusted tool for high-frequency, real-world monitoring.
Wuxi Daoxin Technology offers full technical support for environmental clients deploying the DX-DO3000 in the field. From sensor selection and calibration to telemetry integration, we ensure your dissolved oxygen monitoring project runs reliably and delivers actionable data.
We provide waterproof installation accessories, buoy mounting kits, and floating probe holders for surface deployments. For remote areas, we assist in designing solar-powered DO monitoring stations, complete with enclosures, batteries, and communication modules.
Our team offers remote configuration assistance, firmware upgrades, and data formatting support for Modbus/SCADA compatibility. If needed, we can help build dashboards for government reporting or public-facing transparency platforms.
In addition to field probe maintenance kits and calibration solutions, we also provide on-demand sensor diagnostics, ensuring long-term accuracy even in harsh conditions. For multi-site deployments, we support bulk setup and remote synchronization features.
With the DX-DO3000, environmental managers can track real-time oxygen dynamics in fragile aquatic ecosystems, take proactive measures against pollution, and fulfill regulatory monitoring requirements.