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AlpHa Measurement Solutions |
Free & Total Chlorine in Ballast Water Treatment

Free & Total Chlorine in Ballast Water Treatment

Proper disinfection of ballast water is critical to safeguard local environments and mitigate the introduction of non-native organisms from cargo ships travelling the globe. As opposed to oxidation-reduction potential (ORP), another common measurement used to control ballast water disinfection, accurate chlorine measurement in ballast water is necessary when specificity to chlorine or other halogen-based disinfectants is desired. AlpHa’s amperometric RC67 and RC68 chlorine sensors provide a continuous, direct measurement of chlorine in parts per million (ppm).
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tanker discharging ballast into the harbor
  • Ranges:
    • 0 – 2 ppm / 0 – 5 ppm / 0 – 10 ppm / 0 – 20 ppm / 0 – 100 ppm
    • Adjustable within 0 – 100 ppm
  • Typical Calibration Frequency: Monthly
  • Response Time: T90 120 Seconds
  • Resolution: 0.01 ppm 
  • Accuracy: 0.2 ppm or 4%, whichever is greater
  • Temperature Range: 0 to 50°C
  • pH Range: pH independent between 6 to 9 and pH compensation available outside this range
  • Flow Rate:
    • Minimum: 30 L/hr (0.6 cm/s)
    • Maximum: 60 L/hr (1.3 cm/s)
  • Sensor Type: 3 – Electrode Amperometric with Membrane
  • Warranty: 12 Months
  • Technology
    • Free Chlorine
    • Total Chlorine
    • Chlorine Dioxide
  • Form Factor
    • Process Body
    • Custom Options Available
  • Housing Material Options
    • PVC / CPVC
    • ABS
    • Ryton
    • Custom Options Available
  • Thermistor Options
    • Integrated Temperature Compensation
  • Integrated Insertions
    • 1" Compression Fitting
    • 3/4" NPT
    • Custom Options Available
  • Analog
    • 4 – 20 mA
    • 0 – 5 V
  • Digital
    • RS-485 MODBUS RTU
  • Cables & Connectors
    • Tinned Leads
    • Custom Options Available