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Multiparameter & Sonde in Ballast Water Treatment

Multiparameter & Sonde in Ballast Water Treatment

The expansion of global seaborne transportation has created a massive undertaking in formulating ballast water management protocols that include pH and a host of other water quality measurements. Ballast water is the most common way for ships to adjust the way the vessel floats and is balanced in transit, especially when cargo has been emptied. The proper treatment of ballast water is critical to safeguard local environments.

Combining multiple water quality parameters into a single device provides a convenient method for installation and monitoring. This is especially important for smaller systems where space is a premium or where piping insertion points are limited. Common parameters combined include pH, ORP, conductivity, and temperature.
tanker discharging ballast into the harbor
Parameter Selections
  • pH
  • ORP
  • Reference
  • Conductivity
  • Temperature
  • Dissolved Oxygen
  • Turbidity (wiper included)
  • Ion-Selective Electrode (see table below for range of options)


Ion-Selective ElectrodeRange @ 25°CSensing Element TypeOperating Temp. RangeWarranty
Ammonium (NH4+)0.114,000 ppm as NPVC Membrane040°C6 Months
Nitrate (NO3-)0.1 – 14,000 ppm as NPVC Membrane040°C6 Months
Chloride (Cl-)1.835,000 ppmSolid State Pellet080°C12 Months
Fluoride (F-)0.0219,000 ppmSolid State Crystal080°C12 Months
Calcium (Ca2+)0.540,100 ppmPVC Membrane040°C6 Months
Potassium (K+)0.04 – 39,000 ppmPVC Membrane040°C6 Months
Sulfide (S2-)0.0132,100 ppmSolid State Pellet080°C12 Months
Sodium (Na+)0.01100,000 ppmSensing Glass080°C12 Months
Water Hardness (Ca2+/Mg2+)0.540,000 ppmPVC Membrane040°C6 Months
Magnesium (Mg2+)0.130,000 ppmPVC Membrane040°C6 Months
Bromide (Br-)0.279,900 ppmSolid State Pellet080°C12 Months
Cadmium (Cd2+)0.0111,200 ppmSolid State Pellet080°C12 Months
Copper (Cu2+)0.064 – 6,400 ppmSolid State Pellet080°C12 Months
Cyanide (CN-)0.2260 ppmSolid State Pellet080°C12 Months
Iodide (I-)0.01127,000 ppmSolid State Pellet080°C12 Months
Lead (Pb2+)0.220,700 ppmSolid State Pellet080°C12 Months
Silver (Ag+)0.01107,900 ppmSolid State Pellet080°C12 Months
Fluoroborate (BF4-)VariesPVC Membrane040°C6 Months
Perchlorate (ClO4-)VariesPVC Membrane040°C6 Months
Surfactant (X+/X-)VariesPVC Membrane040°C6 Months
Lithium (Li+)0.210,000 ppmPVC Membrane040°C6 Months


  • Form Factor
    • Multiparameter Sensor
      • Up to 5 Parameters (including temperature and reference)
    • Sonde
      • Two Customizable Sizes Available:
        • 7 Parameters (including temperature and reference)
        • 9 Parameters (including temperature and reference)
  • Analog (multiparameter sensor only)
    • Millivolts
    • Custom options available with preamp capabilities
  • Digital (multiparameter sensor and sonde)
    • RS-485 MODBUS RTU
    • Custom Options Available 
  • Connectors
    • Tinned Leads
    • Spade Lugs
    • DIN
    • MOLEX
    • Mil-spec
    • Circular Connectors
    • Custom Options Available