Impressed Current cathodic protection

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Incorporating a calibrated silver-silver chloride reference electrode, the Sea~Lectrics Corrosion Monitor displays real-time Cathodic Protection levels with a digital display and scrolling trend graph. Visual and audible alarms will alert you whenever the metal hull or bonded underwater metals are not protected from corrosion. Sea~Lectrics Corrosion Monitor Alerts Whenever:

The sacrificial anodes fail to provide the cathodic protection necessary to halt corrosion.

The onboard A/C or D/C circuitry is contributing to corrosive stray currents.

Neighboring vessels are contributing to a corrosive environment.

The shore power of the marina/harbor is threatening your vessel with corrosive ground loop currents.

The coating system of the metal hull is compromised and overloads the sacrificial anodes.

A useful tool for diagnosing electrical anomalies and the integrity of onboard electrical circuitry and devices.

Sacrificial zinc or aluminum anodes are powerless to consistently and adequately protect a steel or aluminum hull, a wood, or fiberglass hull with bonded stainless steel and bronze submerged metals. To clarify:  Over time the sacrificial anode is consumed and thereby has less electrochemical power to Cathodically Protect your expensive submerged metals. Much like a battery, with a motor to run continuously, losing power and ultimately going dead.  This is a fact, no matter the battery or the sacrificial anode.

On the galvanic scale and in reference to silver-silver chloride, a sacrificial anode is 1000 to 1050 millivolts. Submerged stainless steel and bronze are 250 millivolts on the galvanic scale and are considered Cathodically Protected at 550 millivolts. The approximate 500 milli-volt difference is a deficient and unreliable source of Cathodic Protection energy to continuously maintain stainless steel and bronze in a corrosion-free state.   Submerged steel is 550 millivolts on the galvanic scale. Steel is considered Cathodically Protected at 850 millivolts. With only 200 milli-volts in reserve, sacrificial anodes are incapable of continuously maintaining the steel in a corrosion-free state.  Marine grade aluminum is 650 to 750 millivolts on the galvanic scale and considered Cathodically Protected at a precise 950 millivolts in reference to silver-silver chloride.  With only 50 to 100 milli-volts in reserve, sacrificial anodes are compellingly deficient and incapable of continuously maintaining aluminum at a required corrosion-free state.

This ineffectual situation is exponentially acute when your vessel is underway.  Among marine engineers, it is well understood that the rate of corrosion is velocity-dependent. The greater the water velocity, the more aggressive the corrosion rate.  Thus, the more Cathodic Protection power is demanded of your sacrificial anodes, resulting in a deficit protection value and thus the greater the propensity for corrosion.

With the Sea~Lectrics Corrosion Monitor, you will no longer be naively assuming your boat is properly protected. You will no longer be at the mercy of your diver or boatyard discovering expensive corrosion damage long after it’s done.

For vessels that choose sacrificial anodes, Sea~Lectics offers a Corrosion Monitor System that includes a digital numeric display with a trend graph, a silver-silver chloride reference cell, and an alarm to alert when a corrosive situation is present.  With the addition of the optional programmable data logger, the Sea~Lectrics Corrosion Monitor System will provide both real-time and historical information for up to 12 months. Thus significantly enhancing vessel maintenance strategies. Downloaded data will indicate the historic cathodic protection levels, the status of the hull’s coating system, and the electrochemical environment of the marina or harbor, as well as assist in troubleshooting your onboard electrical systems.

Historically, our Corrosion Monitor System exposes the best representation of why the Sea~Lectrics Automatic Corrosion Control System is the most prudent solution to the real and costly threat of corrosion.

The Sea~Lectrics Corrosion Monitor system, and all of its’ powerful information, is easily updated to a permanent and sophisticated fully automatic Corrosion Control System. With the addition of hydrodynamic metal oxide anodes and a precision microprocessor controller, you will have beat the costly corrosion threat.  Sea~Lectrics Corrosion Control System, with more than ample power, will provide strict and efficient controls to maintain a corrosion-free environment for your hulls' underwater metals.  All this with extensive safeguards for dockside and underway cathodic protection requirements.