ClO2-100 Chlorine Dioxide Sensor

Overview

The ClO2-100 is an advanced sensor specifically designed for measuring chlorine dioxide (ClO2) concentration in water. Chlorine dioxide is an increasingly popular alternative disinfectant to chlorine, offering superior oxidation power without producing harmful trihalomethanes (THMs). This sensor is essential for drinking water treatment plants, food processing facilities, and industrial applications.

Key Features

• Selective Detection: Specifically measures ClO2 without interference from chlorine
• Wide Range: Measures from 0.01 to 20.00 mg/L (ppm)
• Dual Output Options: Supports both RS485 Modbus RTU and 4-20mA current output
• Fast Response: Results within 60 seconds
• Automatic Temperature Compensation: Integrated PT1000 sensor for accurate readings
• Direct Connection: Connect directly to computer or PLC without additional instrumentation
• High Protection: IP68 waterproof rating ensures reliable operation

Applications

• Drinking water disinfection monitoring
• Municipal water treatment plants
• Food and beverage processing
• Pharmaceutical water systems
• Cooling tower water treatment
• Hospital water systems
• Swimming pool and spa disinfection
• Wastewater treatment
• Industrial process water
• Odor control systems

Technical Specifications

The ClO2-100 delivers precise chlorine dioxide measurements from 0.01 to 20.00 mg/L with automatic temperature compensation via the integrated PT1000 sensor. The sensor technology specifically detects ClO2 molecules, providing accurate measurements without cross-sensitivity to free chlorine or other oxidants.

Understanding Chlorine Dioxide

Chlorine dioxide offers several advantages as a disinfectant:

• More Effective: Stronger oxidant than chlorine
• Safer Byproducts: Does not produce trihalomethanes (THMs) or haloacetic acids (HAAs)
• pH Independent: Effective across wide pH range (4-10)
• Biofilm Control: Superior penetration of biofilms
• Taste and Odor: Better control of taste and odor compounds

Typical ClO2 residuals:

• Drinking water: 0.1-0.8 mg/L
• Industrial applications: 0.5-5.0 mg/L
• Shock treatment: 5.0-20.0 mg/L

Connectivity and Integration

With its RS485 Modbus RTU interface, the ClO2-100 seamlessly integrates into modern SCADA systems and IoT networks. The 4-20mA current output option ensures compatibility with traditional industrial controllers and data acquisition systems.

Installation and Maintenance

The ClO2-100 requires regular calibration with standard ClO2 solutions for optimal accuracy. The sensor membrane should be inspected periodically and replaced as needed. The robust IP68-rated construction allows for continuous immersion in water treatment systems.

Safety Considerations

Chlorine dioxide monitoring is critical for maintaining safe and effective disinfection while avoiding overdosing, which can lead to taste/odor issues and potential byproduct formation.