AOS11 Fluorescence Dissolved Oxygen Sensor
The ARTang AOS11 Fluorescence Dissolved Oxygen Sensor is designed for continuous dissolved oxygen measurement in water and industrial processes. It uses an optical fluorescence measurement principle to determine dissolved oxygen concentration without consuming oxygen during measurement.
The sensor provides a measurement range of 0–20 mg/L (0–20 ppm) with an accuracy of ±3% of reading and supports Modbus RS485 communication.
Typical applications include wastewater treatment, drinking water treatment, surface water monitoring, aquaculture, and industrial water monitoring.
Measurement Range: 0–20 mg/L (0–20 ppm)
DO Accuracy: ±3% of reading
Communication: Modbus RS485
Maintenance: No membrane or electrolyte replacement required
Protection Rating: IP68 / NEMA 6P
Product Description
AOS11 Optical DO Sensor for Continuous Water Monitoring
The ARTang AOS11 uses an optical fluorescence measurement principle to continuously determine dissolved oxygen concentration in water.
Blue excitation light is directed onto the fluorescent sensing material. Dissolved oxygen affects the fluorescence response, allowing the sensor to determine DO concentration without consuming oxygen during measurement.
With Modbus RS485 communication and IP68 / NEMA 6P protection, the AOS11 is designed for integration into continuous water-quality monitoring systems, including wastewater treatment, water treatment, surface water monitoring and aquaculture.
Technical Specifications
|
Parameter |
Specification |
|---|---|
|
Model |
AOS11 |
|
Measurement Principle |
Optical fluorescence |
|
Measured Parameter |
Dissolved oxygen |
|
Measurement Range |
0–20 mg/L (0–20 ppm) |
|
DO Accuracy |
±3% of reading |
|
Temperature Measurement Range |
0–45°C |
|
Pressure Range |
≤0.3 MPa |
|
Power Supply |
12–24 VDC |
|
Communication |
Modbus RS485 |
|
Sensor Dimensions |
Ø31 × 198 mm |
|
Internal Material |
304 stainless steel |
|
Housing Material |
PVC or POM |
|
Cable Material |
PU |
|
Ingress Protection |
IP68 / NEMA 6P |
|
Calibration |
Automatic air calibration / sample calibration |
Product Features
The AOS11 fluorescence dissolved oxygen sensor combines optical DO measurement, low-maintenance sensing and digital communication for continuous water-quality monitoring.
Optical Fluorescence Measurement
No Membrane or Electrolyte Replacement
No Minimum Flow Requirement
Low Maintenance，Automatic Measurement Compensation
Modbus RS485 Communication
IP68 / NEMA 6P Protection
Typical Applications
Wastewater Treatment
- Aeration tanks
- Biological treatment processes
- Activated sludge systems
- Municipal wastewater treatment
- Industrial wastewater treatment
Drinking Water and Water Treatment
- Drinking water treatment plants
- Water treatment systems
- Water stations
- Water quality monitoring systems
Surface Water Monitoring
- Rivers
- Lakes
- Reservoirs
- Other surface water monitoring points
Aquaculture
- Aquaculture ponds
- Fish farming systems
- Recirculating aquaculture systems
- Other aquaculture water systems
Industrial Water Monitoring
Suitable for industrial applications requiring continuous dissolved oxygen measurement and Modbus RS485 integration with monitoring or control systems.
Frequently Asked Questions
A fluorescence dissolved oxygen sensor is an optical sensor that determines dissolved oxygen concentration by measuring the interaction between oxygen and a fluorescent sensing material.
Unlike electrochemical dissolved oxygen measurement methods involving an oxygen-consuming reaction, fluorescence measurement does not consume oxygen during measurement.
The sensor has an IP68 / NEMA 6P protection rating and is designed for immersed water-monitoring applications.
The installation must remain within the specified operating temperature and pressure limits.
Typical applications include wastewater treatment, drinking water treatment, surface water monitoring, aquaculture and industrial water monitoring.
The required cleaning interval depends on the fouling conditions at the measurement point. Approximately three months can be used as a general inspection reference, but the actual interval should be adjusted according to site conditions.
Request Dissolved Oxygen Sensor Selection Support
For product selection, please provide:
- Measured liquid
- Expected dissolved oxygen range
- Process temperature and pressure
- Installation method
- Communication and system integration requirements
ARTang can help confirm sensor suitability and Modbus RS485 integration for your application.
Factory Strength & Quality Assurance
ARTang supports industrial measurement projects with in-house production, strict calibration, certified quality control, and global exhibition experience.
Factory Production
In-house production and assembly for stable product quality and reliable delivery.
CNC Machining Equipment
Product Assembly
CNC Machining
Welding Process
warehouse
Technical Support Department
Certified Quality
Product certificates and quality control systems support reliable industrial measurement applications.
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ISO
3-A
NEPSI
Exhibition Experience
ARTang meets customers and distributors at industry exhibitions to better understand project needs and market requirements.
