Wuxi Daoxin Technology Co., Ltd.
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The DX-DO3000 Online Dissolved Oxygen Meter, developed by Wuxi Daoxin Technology Co., Ltd., is a smart monitoring solution designed to meet the rigorous demands of aquaculture environments, where oxygen concentration directly influences the health, growth, and survival rate of aquatic organisms.
This analyzer features a fluorescence-based DO sensor that eliminates the need for membranes and electrolyte solutions, making it ideal for long-term, maintenance-free deployment in ponds, tanks, and recirculating aquaculture systems (RAS). It offers a high resolution of 0.01 mg/L and a fast response time (≤10 seconds), ensuring real-time and accurate monitoring of dissolved oxygen levels.
Equipped with automatic temperature compensation over a range of 0–80°C, the DX-DO3000 adapts to diurnal and seasonal temperature fluctuations in both indoor and outdoor farming environments. It supports both analog (4-20mA) and digital RS485 outputs, allowing for seamless integration with oxygen control systems, alarms, or cloud-based remote monitoring platforms.
Built for reliability, the sensor comes with anti-bubble and anti-fouling features, ensuring stable performance even in aerated or nutrient-rich aquaculture water. The housing, made of corrosion-resistant materials, ensures long service life under saline, brackish, or freshwater conditions.
| Sensor Lifespan | Fluorescence Method: ≥ 2 Years (no Membrane Loss); Membrane Method: 6 To 12 Months (requires Regular Maintenance) |
| Installation | Immersion / Flow-through (Flange Option) |
| Measurement Accuracy | ±1% FS Or ±0.1 Mg/L |
| Sensor Type | Fluorescence Method: No Membrane, Resistant To Contamination; Membrane Method: Replaceable Diaphragm (electrolyte Required) |
| Response Time | ≤ 10s (Seconds) |
| Temperature Compensation Range | 0 ～ 80 ℃ (Automatic Or Manual Compensation) |
| Measurement Principle | Luminescent Or Polarographic Membrane (Membrane Method) |
| Signal Output | 4-20mA, RS485 (Modbus RTU) |
| Flow Velocity | ≥ 0.2 M/s (flow Required For Membrane Method; Still Water Available For Fluorescence Method) |
| Resolution | 0.01 Mg/L |
The DX-DO3000 is widely applied in intensive fish and shrimp farming, especially where real-time oxygen control is crucial to avoid stress or mortality during high-density cultivation. In pond aquaculture, it can be installed with solar-powered systems and used to automate aerator startup, ensuring oxygen levels stay within optimal thresholds throughout the day and night.
In recirculating aquaculture systems (RAS), the device provides continuous feedback for oxygen injection systems and biofilter management, helping stabilize DO levels across multiple tanks and reduce the risk of ammonia buildup or anaerobic zones.
For hatcheries and nursery tanks, where young aquatic species are especially sensitive to oxygen fluctuations, the DX-DO3000 offers high precision and stable performance, allowing operators to detect and respond to changes instantly.
It is also suitable for offshore and coastal aquaculture, thanks to its waterproof, corrosion-resistant design and the option of installing flanged or submerged probes. The fluorescence sensor’s immunity to salinity drift and biofilm buildup ensures long-term monitoring in marine conditions.
In smart aquaculture applications, the DX-DO3000 can be integrated into IoT-based monitoring platforms, enabling remote control of aerators, real-time alerts via mobile apps, and data analytics for farming optimization.
Wuxi Daoxin Technology offers dedicated support for aquaculture clients, including system design consultation, customized integration with farm management platforms, and on-site calibration training. Whether you operate small-scale hatcheries or commercial-scale ponds, we assist you in building a dependable oxygen monitoring infrastructure.
We provide full documentation in multiple languages, including installation guides, communication protocols, and maintenance recommendations specific to aquaculture scenarios. Our service team is available for remote diagnostics, firmware upgrades, and troubleshooting, ensuring your DO system remains responsive and accurate.
For clients using the fluorescence sensor, we offer extended warranty options and long-life probes designed for up to 2 years of continuous operation. Membrane probe users can access replacement kits, diaphragm membranes, and electrolyte refills on-demand.
We also assist with customized installation accessories, such as floating brackets, solar enclosures, and waterproof extension cables. For customers using multiple DO meters across large farms, we offer batch configuration support and real-time dashboard integration assistance.
With DX-DO3000, aquaculture managers can reduce manual testing frequency, avoid fish kills, and increase feed conversion efficiency — all while improving sustainability and profitability.