corrosion test meter

by dave
(st,augustine florida)

I have one of those portable analog corrosion test meters. It has three zones, one for steel, aluminum and bronze, that shows the green area for correct protection. What I don't understand is if you have a fiberglass boat with the stainless steel shafts and bronze thru hull fittings bonded together, what measurement is okey. Do I split the difference between the steel and bronze on the analog dial?

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Oct 29, 2013
Marine corrosion tester
by: Dave Gallagher

Identify corrosion problems instantly with the RDI-CRE-KIT. The digital screen offers an easy-to-read display, and each kit comes with a meter, corrosion reference electrode, test leads, and a convenient pouch for easy storage.

The RDI-CRE Corrosion Reference Electrode is included in the kit, and is a professional-grade silver/silver-chloride (Ag/AgCl) reference electrode for performing corrosion potential surveys on boats and yachts. The portable electrode has an integral 20' marine grade cable and is weighted for easy submergence. Used with a digital multimeter, this simple test is a valuable diagnostic tool to identify stray electrical current and provide warning as to the condition of your vessel's zincs and drives. The user guide provides an overview of marine corrosion, troubleshooting techniques and corrosion diagnostics for your boat or yacht.

This invaluable tool is perfect for any boater or marina operator to determine the following:
• Is there enough zinc on your boat or vessel?
• Are there stray electrical currents in your boat or at your dock?
• Is the zinc on your boat being eaten by boats next to you?
• Is your dock or marina following the proper corrosion procedures to ensure your boat is safe?

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