IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards ppb Galvanic Dissolved Oxygen System R1.0 © 2004 IC CONTROLS CONTROLS

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards DISSOLVED OXYGEN – THE KEY POINTS OF MAKING IT WORK

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards DISSOLVED OXYGEN – THE KEY POINTS OF MAKING IT WORK Accuracy

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards DISSOLVED OXYGEN – THE KEY POINTS OF MAKING IT WORK Accuracy Speed of Response

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards DISSOLVED OXYGEN – THE KEY POINTS OF MAKING IT WORK Accuracy Speed of Response Maintenance

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards DISSOLVED OXYGEN – THE KEY POINTS OF MAKING IT WORK Accuracy

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Accuracy Technology Comparison Polarographic vs IC Controls Galvanic

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Accuracy Technology Comparison Polarographic vs IC Controls Galvanic Accuracy without Calibration Internal Chemistry Effects

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Polarographic vs IC Controls Galvanic What's the difference?

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Typical Membrane Sensor Design

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Polarographic Technology using Gold Cathode & Silver Anode

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Polarographic Applied voltage from the Cathode to the Anode. Reaction of Oxygen at Cathode generates a current. Output can go below zero; a value that does not exist. Therefore, decreased accuracy in calibration and measurement V O2O2 O2O2 O2O2 O2O2

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards IC Controls Galvanic Technology using Silver Cathode & Lead Anode

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Galvanic No applied Voltage. Oxygen is the fuel for the battery. Therefore, absolute zero and better accuracy. O2O2 O2O2 O2O2 O2O2

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Accuracy Technology Comparison Polarographic vs IC Controls Galvanic Accuracy without Calibration Internal Chemistry Effects

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Internal Electrolyte Chemistry for IC Controls Galvanic Cell Cathode O 2 + 2H 2 O + 4e - 4OH - Anode Pb Pb e - Total Reaction O 2 + 2H 2 O + 2Pb 2Pb(OH) 2

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Internal Electrolyte Chemistry The electrolyte used for the IC Controls Model 865 Galvanic sensor is Potassium Hydroxide and the reaction at the anode consumes Hydroxide. With the IC Controls technology the Hydroxide is consumed at exactly the same rate it is produced at the anode. Therefore, the electrolyte concentration remains constant and reduces electrode drift. Also, sensor life is extended so membrane replacement is only necessary every 1 to 5 years. SELF REGENERATIVE ELECTROLYTE

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards IC Controls Galvanic Sensor Provides better Accuracy Absolute Zero Less Drift Better Stability Less Maintenance

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards DISSOLVED OXYGEN – THE KEY POINTS OF MAKING IT WORK Accuracy Speed of Response

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards For any Dissolved Oxygen technology, reliable, accurate measurements are only possible if the sensor responds quickly down in the ppb Range. Historically, after charging a sensor response would take up to 72 hours before the oxygen in the fill solution was consumed and the sensor was able to measure less than 5 ppb. Speed of Response

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Sensor Tip Design Cathode for Sensing Dissolved Oxygen Guard Ring to eliminate dissolved Oxygen in the fill solution causing false high readings

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Sensor Tip Design O2O2 Guard Ring Cathode The Guard Ring is pressed against the membrane so any Oxygen in the fill solution will be consumed and cannot migrate to the cathode and cause false high readings. This is most critical when the sensor has been recharged and there is Oxygen present in the fill solution. By using the Guard Ring, Recharging and measurement below 20 ppb is accomplished in under 5 minutes. Anode

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards IC Controls Guard Ring Fast Speed of Response Quick Recharge Excellent Low End Accuracy

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards DISSOLVED OXYGEN – THE KEY POINTS OF MAKING IT WORK Accuracy Speed of Response Maintenance

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Recharging the Sensor Over time the sensor internal will deplete and the membrane and fill solution will need replacement. Historically, this was a difficult process with creases being formed in the membrane and air bubbles in the fill solution, which cause false high readings. At times the process could take up to 1 hour to replace a membrane and put a sensor back on line. The model 865 Sensor provides ease of use which includes fast, reliable and simple maintenance.

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Membrane Module Tip Retainer Maintenance is made easy with the Pre-Tensioned Membrane cap. This system ensures there are no air bubbles or creases in the membrane cap, which will cause false high readings. An easy process that allows recharging and re-installation in less than 5 minutes. Pre-Tensioned Membrane Cap

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards Pre-Tensioned Membrane Cap Provides Ease of Use Fast Membrane Replacement No Air Bubbles or Creases Reliable performance

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards IC Controls Dissolved Oxygen Galvanic Technology Self Regenerative Electrolyte Fast Response below 1 ppb Pre-Tensioned Membrane Cap Proven Technology Superior Design Better Results

IC Controls 865 ppb Dissolved Oxygen System pH / ORP Conductivity Dissolved Oxygen Chlorine Standards For more information: Call: or We will be happy to help you directly or put you in contact with your local Representative of IC Controls Quality Water Products Model 865 Model