Wuxi Daoxin Technology Co., Ltd.
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The DX-DO3000 Online Dissolved Oxygen Meter, developed by Wuxi Daoxin Technology, is a powerful and dependable tool for continuous DO monitoring in complex industrial environments. It integrates advanced optical luminescent sensing technology, ensuring stable and drift-free measurement without the need for regular membrane replacement or electrolyte refilling.
Designed for versatility, the DX-DO3000 offers two sensor options: a maintenance-free fluorescence sensor ideal for wastewater and aquaculture, and a polarographic membrane sensor suited for more controlled laboratory or bioprocessing environments. Both variants support high-resolution detection (0.01 mg/L) and deliver rapid response times of less than 10 seconds, ensuring accurate feedback in dynamic systems.
The analyzer features a wide temperature compensation range from 0°C to 80°C, with automatic or manual calibration options. Its rugged 316L stainless steel construction offers excellent resistance to corrosion, scaling, and environmental contaminants, extending the lifespan of the sensor in aggressive applications.
Output options include 4-20mA current loop and RS485 Modbus RTU communication, making integration into centralized control systems simple and effective. The device supports AC220V or DC24V power input, suitable for both fixed and mobile monitoring setups.
Installation is flexible with wall-mount, immersion, or flow-through configurations available. Optional self-cleaning devices and anti-fouling sensor shields can be integrated to further reduce maintenance efforts in high-biofilm environments.
| Operating Temperature | -10 ～ 60 ℃ |
|---|---|
| Signal Output | 4-20mA, RS485 (Modbus RTU) |
| Sensor Lifespan | Fluorescence Method: ≥ 2 Years (no Membrane Loss); Membrane Method: 6 To 12 Months (requires Regular Maintenance) |
| Measurement Accuracy | ±1% FS Or ±0.1 Mg/L |
| Measurement Range | 0-20 Mg/L (Multiple Ranges Optional) |
| Measurement Principle | Luminescent Or Polarographic Membrane (Membrane Method) |
| Response Time | ≤ 10s (Seconds) |
| Installation | Immersion / Flow-through (Flange Option) |
| Flow Velocity | ≥ 0.2 M/s (flow Required For Membrane Method; Still Water Available For Fluorescence Method) |
| Sensor Type | Fluorescence Method: No Membrane, Resistant To Contamination; Membrane Method: Replaceable Diaphragm (electrolyte Required) |
The DX-DO3000 is designed for a wide range of industrial and environmental monitoring applications. In urban sewage and wastewater treatment plants, it assists operators in controlling aeration efficiency in biological tanks and oxidation ditches, optimizing energy usage while improving pollutant removal.
In aquaculture facilities, stable DO monitoring is crucial to support fish and shrimp health, especially in high-density farming systems. The DX-DO3000’s fluorescence probe performs accurately in both still water and recirculating systems, giving farmers real-time data to adjust oxygen supply and prevent stock losses.
Within the pharmaceutical and biotech sectors, DO monitoring is vital in fermentation and enzymatic reactions. The membrane probe version of the DX-DO3000 provides reliable control in small-scale or batch reactors, ensuring product quality and biological efficiency.
The device also sees extensive use in breweries, where oxygen must be tightly controlled during fermentation and bottling stages to prevent oxidation and spoilage. In environmental field research, it supports dissolved oxygen profiling in rivers, reservoirs, and lakes — contributing to ecological assessments and pollution source tracking.
In industrial process water management, such as power plants and cooling systems, the DX-DO3000 helps maintain oxygen levels within acceptable operational thresholds, preventing corrosion or anaerobic activity in pipelines and storage tanks.
Wuxi Daoxin Technology provides a full spectrum of support services to ensure users gain the maximum value from their DX-DO3000 system.
Upon purchase, clients receive a complete documentation set, including installation manuals, wiring schematics, Modbus communication guides, and sensor handling protocols. For first-time users, we offer optional installation assistance and system commissioning guidance, either remotely or on-site.
Our support team is available for real-time troubleshooting, firmware upgrades, and system diagnostics. Users can reach us through multiple channels, including dedicated email, hotline, and remote desktop support.
We maintain an inventory of replacement parts, including sensor caps, cables, cleaning accessories, and calibration solutions. For membrane sensors, diaphragm kits and electrolyte refills are readily available and shipped on demand.
Annual maintenance packages, performance recalibration services, and operational training for maintenance teams can also be arranged. Whether you're operating in a remote aquaculture site or a controlled cleanroom, we ensure that your DO monitoring system remains responsive, accurate, and efficient.