Residual chlorine monitor with PID AW402

• Total and free residual chlorine measurement – add potassium iodide to reagent to convert free chlorine measurement to total chlorine
• Reagentless operation – reduced operating costs with reagentless operation at a pH of 7.5 or less
• Multiple sensor input capability – reduced installation costs for multiple point monitoring operations
• Self-cleaning sensor assembly – prolongs sensor life and maintains accuracy