Accurate dissolved oxygen (DO) monitoring serves as a critical component in water treatment, aquaculture, and industrial utility processes, ensuring water health, optimizing workflows, and enhancing production efficiency. Traditional measurement methods often struggle with accuracy limitations, maintenance complexity, and high operational costs. The Oxymax COS41 amperometric dissolved oxygen sensor from Endress+Hauser addresses these challenges through exceptional performance and reliability.

Designed specifically for water, wastewater, and utility applications, the Oxymax COS41 sensor delivers several key advantages:

• High-precision measurement: Capable of detecting dissolved oxygen concentrations between 0.05 and 20 mg/l, meeting rigorous accuracy requirements across diverse applications.
• Broad applicability: Suitable for various water bodies and wastewater treatment processes, including aeration control in treatment plants, potable water source monitoring, industrial process water management, and aquaculture oxygenation systems.
• Robust construction: Manufactured from polyoxymethylene (POM) for both sensor body and membrane head, offering superior corrosion resistance and mechanical durability in demanding environments.
• Optimized maintenance: Engineered for extended service life with minimal intervention requirements, significantly reducing total cost of ownership.
• Streamlined calibration: Features simplified air calibration functionality that minimizes operational downtime and labor requirements.

The sensor's technical parameters enable versatile deployment across multiple environments:

• Measurement range: 0.05-20 mg/l, covering hypoxic to oxygen-rich conditions
• Process temperature tolerance: Up to 50°C (122°F) for standard water applications
• Pressure resistance: Withstands up to 10 bar (145 psi) for industrial pressure environments
• Measurement principle: Closed-system (membrane-covered) amperometric two-electrode design prevents surface contamination interference
• Integrated temperature compensation: Built-in NTC temperature sensor enhances measurement accuracy
• Installation options: G1" threaded process connection with choice of fixed cable or TOP68 connector for flexible integration

The Oxymax COS41 serves critical monitoring functions across multiple sectors:

Wastewater treatment plants: Enables precise DO level control in aeration tanks to optimize aerobic microorganism activity and treatment efficiency, while monitoring process water quality throughout treatment stages.

Drinking water facilities: Monitors oxygen content in potable water to assess enrichment levels and corrosion potential, ensuring water safety compliance.

Industrial bioprocessing: Provides real-time DO data for biological reactor performance optimization in various industrial treatment applications.

Aquaculture operations: Maintains optimal oxygen levels for aquatic species cultivation, directly impacting stock health, growth rates, and survival percentages.

Environmental monitoring: Tracks dissolved oxygen in rivers, lakes, and other surface waters to assess ecosystem health and support conservation efforts.

The Oxymax COS41 delivers measurable value through:

• Consistent high-accuracy measurements for reliable process decisions
• Extended maintenance intervals reducing operational disruptions
• Simplified calibration procedures minimizing technician workload
• Cost-efficient performance through durable construction and minimal upkeep

For comprehensive DO monitoring solutions, compatible supporting products include:

• Liquisys COM223/COM253 transmitters for signal conversion and remote monitoring
• COY8 zero-point gel for sensor validation and calibration
• Maintenance kits and accessories including protective cages, seals, and replacement membranes

Through its advanced amperometric technology, precision performance, and reduced maintenance requirements, the Oxymax COS41 establishes itself as a reliable solution for continuous water quality monitoring. The sensor's ability to deliver accurate data while lowering operational costs makes it a valuable asset across water-intensive industries.