DO-110 Fluorescent Dissolved Oxygen Sensor (Titanium)

Overview

The DO-110 is a premium fluorescent dissolved oxygen sensor featuring titanium alloy construction for ultimate corrosion resistance in marine and seawater environments. Utilizing the same advanced optical technology as the DO-100, the titanium body ensures decades of reliable service in the most demanding saltwater applications including seawater aquaculture, oceanographic research, and coastal monitoring.

Key Features

• Titanium Construction: Ultimate corrosion resistance for seawater and marine environments
• Fluorescent Technology: No oxygen consumption, stable readings
• Wide Measurement Range: 0-20 mg/L and 0-200% saturation
• Full Salinity Range: Works in fresh to hypersaline water (0-60 ppt)
• Automatic Temperature Compensation: Integrated PT1000 sensor
• Digital Output: RS485 Modbus RTU communication
• IP68 Waterproof: Fully submersible operation
• Long Cable Options: Standard 5m, extendable to 100m
• Replaceable Cap: Field-replaceable membrane cap
• Lightweight: 40% lighter than stainless steel

Applications

• Marine and seawater aquaculture
• Offshore fish and shrimp farming
• Oceanographic research and monitoring
• Coastal and estuarine studies
• Marine biology research
• Coral reef monitoring
• Desalination plant monitoring
• Offshore platforms
• Hypersaline environment monitoring
• Submarine and ROV operations

Why Titanium for Seawater

Titanium provides unmatched performance in marine environments:

Superior Corrosion Resistance:

• Absolute corrosion immunity in seawater
• No pitting or crevice corrosion
• Decades of service life
• Self-healing passive oxide layer

Marine Performance:

• High chloride resistance (19,000+ ppm in seawater)
• Biofouling-resistant smooth surface
• No metal ion contamination
• Non-magnetic properties

Physical Advantages:

• Excellent strength-to-weight ratio
• 40% lighter than stainless steel
• Temperature stable across range
• Biocompatible with marine life

Technical Specifications

The DO-110 uses fluorescent quenching technology where dissolved oxygen quenches the fluorescence of a special dye. The titanium body provides unmatched corrosion resistance while maintaining the same proven optical measurement technology.

Dissolved Oxygen in Seawater

Typical DO levels in marine environments:

• Healthy ocean water: 6-8 mg/L (lower than freshwater due to salinity)
• Marine aquaculture: > 5 mg/L required, > 6 mg/L optimal
• Shrimp farming: > 4 mg/L minimum, > 5 mg/L optimal
• Hypoxic zones: < 2 mg/L

Seawater holds less oxygen than freshwater due to higher salinity. The DO-110’s automatic temperature compensation and wide salinity range (0-60 ppt) ensure accurate measurements across all marine conditions.

Installation and Operation

The DO-110 is designed for easy deployment in marine environments with vertical or horizontal mounting. The titanium construction allows for long-term installation in harsh saltwater conditions with minimal maintenance.

Calibration uses simple one-point air calibration method. Monthly calibration recommended for optimal accuracy in marine applications.

Maintenance consists of periodic cleaning to remove marine biofouling (barnacles, algae, marine growth). The replaceable membrane cap provides easy field servicing.

Marine Applications

Seawater Aquaculture

• Offshore cage culture monitoring
• Sea-based fish and shrimp farming
• Multiple sensors for large operations
• Automated aeration control
• Emergency low-oxygen alerts

Oceanographic Research

• Long-term moored deployments
• Hypoxia and dead zone studies
• Coastal ecosystem monitoring
• Climate change impact assessment
• Vertical profiling studies

Coastal Monitoring

• Estuary water quality
• Outfall monitoring
• Tidal effect studies
• Environmental compliance

Connectivity and Integration

The DO-110’s RS485 Modbus RTU interface enables:

• Research vessel systems
• Moored buoy networks
• Wireless satellite telemetry
• ROV/AUV integration
• Aquaculture SCADA systems
• Early warning systems

DO-110 vs. DO-100 Comparison

Choose DO-110 (Titanium) for:

• Seawater and marine environments
• Long-term offshore deployment
• Harsh saltwater conditions
• Oceanographic research
• Premium commercial aquaculture

Choose DO-100 (316L Stainless) for:

• Freshwater or occasional saltwater
• Industrial wastewater treatment
• Protected installations
• Budget considerations

Why Choose DO-110

• Ultimate durability: Titanium lasts decades in seawater
• Professional quality: Oceanographic-grade sensor
• Long warranty: 3-year manufacturer warranty
• Low maintenance: Resistant to marine corrosion
• Lightweight: Easier handling and installation
• Proven technology: Fluorescent method used worldwide
• Full salinity range: Fresh to hypersaline (0-60 ppt)