Online Optical Dissolved Oxygen Sensor

Online Optical Dissolved Oxygen Sensor: Precision Monitoring for Critical Environments

Our Inline Optical Dissolved Oxygen Sensor represents a significant leap in water quality monitoring, utilizing advanced fluorescence technology to deliver unparalleled accuracy and reliability. Designed for demanding applications, this sensor provides precise dissolved oxygen measurements without the limitations of traditional electrochemical methods.

How it Works: The Science of Fluorescence Unlike older galvanic or polarographic sensors that consume oxygen, our optical sensor operates on the principle of fluorescence quenching. It emits a blue light, exciting a specialized phosphor layer. This excited phosphor then emits red light, and the time it takes for this fluorescence to decay back to its ground state is directly and inversely proportional to the concentration of oxygen present. This innovative approach ensures:

• No Oxygen Consumption: Eliminates measurement drift due to oxygen depletion in the sample, leading to stable readings and extended calibration intervals.
• Reduced Maintenance: No membranes to replace, no electrolytes to replenish, significantly lowering operational costs and effort.
• Interference-Free Data: Highly resistant to common interferences like hydrogen sulfide, enabling robust performance in complex matrices.

Versatile Applications: This sensor is an essential tool for continuous dissolved oxygen monitoring across a wide range of critical processes and environments, including:

• Wastewater Treatment: Optimizing aeration control in activated sludge processes for energy efficiency and effluent quality.
• Water Treatment Plants: Ensuring adequate oxygen levels for biological processes and water safety.
• Surface Water Monitoring: Assessing ecological health in rivers, lakes, and reservoirs.
• Industrial Process Water: Maintaining optimal conditions for industrial operations and preventing corrosion.
• Aquaculture: Critical for fish health, growth rates, and preventing fish kills in hatcheries and farms.

Key Features & Benefits:

• Exceptional Stability & Reproducibility: Equipped with a cutting-edge oxygen-sensitive film, guaranteeing consistent, high-accuracy measurements over extended periods with minimal recalibration.
• Ultra-Low Maintenance: Our innovative fluorescence technology drastically reduces maintenance requirements compared to conventional sensors.
• Smart Maintenance Reminders: Customizable, automated alerts ensure timely servicing, preventing downtime and maintaining peak performance.
• Robust & Durable Construction: A fully enclosed, robust design with premium materials like SUS316L and Titanium (for seawater applications) ensures long sensor life even in harsh industrial and environmental conditions.
• Simplified Operation: Intuitive interface instructions and plug-and-play functionality make installation and calibration straightforward, minimizing potential errors.
• Comprehensive Visual Warnings: Integrated alarm functions provide immediate alerts for critical dissolved oxygen levels, enabling rapid response.
• Seamless Integration: Standard MODBUS RS485 output allows for easy connection to existing PLCs, SCADA systems, and data loggers.

Technical Specifications:

• Materials: Body: SUS316L + PVC (Standard), Titanium (Seawater Version); O-ring: Viton; Cable: PVC
• Measurement Range:
  • Dissolved Oxygen: 0-20 mg/L; 0-20 ppm
  • Temperature: 32ºF-113ºF (0ºC-45ºC)
• Measurement Accuracy:
  • Dissolved Oxygen: ±3% of measured value
  • Temperature: ±0.5ºC (±0.9ºF)
• Pressure Range: ≤0.3 Mpa
• Output: MODBUS RS485
• Storage Temperature: 5ºF-149ºF (-15ºC-65ºC)
• Ambient Temperature: 32ºF-113ºF (0ºC-45ºC)
• Calibration: Automatic air calibration, sample calibration
• Cable Length: 10m
• Dimensions: 2.17 x 13.5 inches (55mm x 342mm)
• Waterproof Rating: IP68/NEMA6P (fully submersible)