Overview The residual chlorine electrode is an online residual chlorine sensor that, when paired with a corresponding residual chlorine analyzer, forms an online residual chlorine monitoring system. It is also referred to as a residual chlorine sensor or residual chlorine probe. Typical Applications The residual chlorine electrode is suitable for measuring residual chlorine, chlorine dioxide, or dissolved ozone in water production and bottling industries. It is also used for online monitoring of residual chlorine concentration in drinking water and industrial process water disinfection systems, as well as in settings such as swimming pools where residual chlorine measurement is required. Technical Parameters of the Residual Chlorine Electrode: - Measurement Range: 0.005–20 ppm (mg/L) HOCl - Minimum Detection Limit: 5 ppb or 0.005 ppm (0.01 mg/L) HOCl - Accuracy: 2% or ±10 ppb (0.01 mg/L) HOCl - Response Time: 90% within 90 seconds - Sample Flow Rate: 200–250 ml/min - Storage Temperature: -20–60°C - Operating Temperature: 2–45°C - Sample Temperature: 2–45°C - Calibration Method: Laboratory comparison method - Calibration Interval: Once every 2 months - Maintenance Interval: Membrane and electrolyte replacement every 6 months - Sample pH Range: 5–7 pH - Operating Pressure Range: 0–1 bar - Electrode Dimensions: 20 mm diameter, 70 mm length