The sophisticated online dissolved oxygen controller A11DO continuously monitors and the dissolved oxygen levels.A3.7-inch display allows for unrestricted switching between Chinese and English.Instrument features include multi-mode temperature compensation, isolated signal output, and three configurable relays. The TS-120-10M dissolved oxygen electrode and its installation accessories are sufficiently stable for applications in urban sewage treatment, water supply, chemical manufacturing, and aquaculture. It provides reliable data for process control and water quality assurance.
★★★★★
Features
Specifications
| Category | Specifications |
|---|---|
| Measurement Range | Dissolved Oxygen (DO): 0~20mg/L (supports multi-precision switching: 0.0~20.0mg/L, 0.00~20.00mg/L)Temperature: 0~100℃ (adapts to electrode temperature measurement range of 0~60℃) |
| Measurement Accuracy | DO: ±0.3mg/LTemperature: ±0.3℃ |
| Resolution | DO: 0.01mg/LTemperature: 0.1℃ |
| Stability | ≤±0.3mg/L/24 hours |
| Temperature Compensation | Supports automatic (PT1000/NTC10K) and manual modes; compensation range: 0~100℃ |
| Signal Output | 2 channels of 4~20mA isolated output, corresponding to DO value and temperature respectively; maximum load resistance: ≤500Ω |
| Alarm Output | 3 groups of normally open contact relays, contact capacity: 3A/250VAC; supports multiple alarm modes (high point/low point/inside range/outside range/time control/temperature correlation, etc.) |
| Communication Function (Optional) | RS485 Modbus RTU protocol; supports custom address (1~255) and baud rate (2400/4800/9600/19200) |
| Power Supply | Optional AC220V or DC24V; power consumption: ≤7W |
| Physical Parameters | Dimensions: 96×96×128mm (H×W×D)Cutout Size: 92×92mm (H×W)Mounting Type: Panel-mounted (embedded) |
| Operating Environment | Ambient Temperature: 0~50℃Relative Humidity: ≤85%RH (no strong magnetic interference) |
Standard Configuration
- Host: A11DO
- Dissolved oxygen electrode: TS-120-10M
- Submerged electrode sheath: PP1120-200
Core Highlights
- Highly accurate and stable: ± 0.3mg/L measurement accuracy, 24-hour stability, pressure and salinity parameter adjustment, and appropriate for complex water quality.
- Isolation technique on the 4-20mA output prevents electromagnetic interference in industrial areas, improving data transmission.
- Password management, overload protection, and matching electrode sheaths ensure installation safety.
- Wide voltage supply, varied installation techniques and alarm modes, fit with process control requirements of diverse industries.
Featured Applications
- For treating wastewater, make sure you always check the aeration tank and secondary settling tank for dissolved oxygen levels.
- In the water supply business, dissolved oxygen is checked to make sure that drinking water sources and pipes are safe.
- During biological fermentation, keep an eye on the amount of dissolved oxygen to speed up the process. This is called chemical fermentation.
- To keep fish and shrimp from becoming hypoxic, aquaculture ponds and seedling workshops must keep an eye on the amounts of dissolved oxygen in real time.
- You need to measure dissolved oxygen in a lot of different places, such as industrial circulating water, environmental water quality tracking stations, and more.
Daily maintenance and precautions
Maintenance points
- Electrode maintenance: Calibrate regularly (1-3 months), clean with neutral detergent when pollution is severe, and avoid using strong acids and alkalis; When not in use for a long time, it needs to be soaked in a specialized protective solution.
- Instrument maintenance: Keep the casing clean and avoid direct sunlight and corrosive environments; Check the relay contacts and wiring terminals once a year to prevent oxidation.
- Cable maintenance: Avoid pulling or bending cables. Special shielded wires should be used to extend cables, and the length should not exceed 30 meters.
Safety precautions
- Before installation and wiring, the power must be disconnected and operated by professionals to avoid the risk of electric shock.
- When connecting a relay to high-power equipment, an additional intermediate relay needs to be installed to prevent contact overload damage.
- If there is surge interference in the power supply, an independent power supply should be provided for the controller, separate from the power supply of equipment such as the dosing machine and mixer.
- The electrode installation must be well sealed with waterproofing, and it is strictly prohibited for water to enter the inside of the electrode or the wiring terminals, otherwise it may cause short circuit faults.
Technical Support
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The Sino Inst A11DO online dissolved oxygen controller is designed with the core concept of “precision, intelligence, and durability”, integrating practical functions such as multi-mode compensation, flexible alarm, and anti-interference output, perfectly adapting to industrial continuous monitoring scenarios. From installation and debugging to daily operation and maintenance, every detail is considered to simplify operation and improve stability, combined with dedicated dissolved oxygen electrodes and accessories, forming a complete monitoring solution.
We provide professional selection guidance, installation support, and after-sales service. If you need technical consultation or accessory procurement, please feel free to contact us at any time to make water quality monitoring more efficient and worry free!
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