The third electrode is insulated and does not receive any anode current. This electrode is freely corroding and it becomes the starting point — or reference — in eliminating corrosion. Electrodes constructed of Silver with a Silver Chloride coating (Ag/AgCl) are used exclusively with the CAPAC system.

Features

• Ag/AgCl electrodes have long life in all services
• Ag/AgCl operate in all natural waters
• Ag/AgCl have proven high stability
• CAPAC incorporates a shielded electrode
• CAPAC uses a large-area electrode
• CAPAC offers an optional cartridge electrode design
• Electrode assembly incorporates the secondary cofferdam

Benefits

• Proven 20-year installations; eliminates replacement costs
• Does not fail in brackish or fresh water like Zinc electrodes
• Stability is shown to be better than 10 mV (Zinc is 135 mV)
• Potential does not change with speed, as do exposed designs
• Potential does not change with contaminants, as do others
• Cartridge electrodes can be changed while afloat
• Reduced installation time and cost

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