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CATHODE PROTECTION

PORTABLE AND PERMANENT REFERENCE ELECTRODES

IEC has in its portfolio two types of reference electrodes. They are:

– Portable Electrodes: manufactured by Tinker & Rasor;

– Portable and Permanent Electrodes: manufactured by Borin.

The reference electrodes are instruments for inspection and maintenance of the cathodic protection system and are indispensable equipment in the cathodic protection technology. It is by making use of these materials that the potential of a structure is measured relative to the electrolyte in order to assess the condition of the metal material, to check if there is corrosion, whether the structure is protected or whether there is influence of current interference.

The electrodes and their types:

– Copper / copper sulfate electrode: used mainly to measure potentials in soil, avoiding its usage in liquids;

– Silver / silver chloride electrode: specific for salt water;

– Zinc / zinc sulfate electrode: measures a potential in salt water as well as in soil. For use in soil, zinc should be wrapped with conductive filler of gypsum and bentonite.

Each reference electrode has a different value to its own potential. That is why a given potential, measured by different reference electrodes, presents different values.

Main commercially available electrodes:

– Manufactured by our partner Tinker & Rasor:

Portable models of copper / copper sulfate: 6B, 8B, 6A, 2A, 3A

Portable Silver / Silver Chloride Model: SC-4

– Manufactured by our partner Borin:

Permanent Copper / Copper Sulfate Model: Stelth 2 – SRE-007-CUY

Silver / Silver Chloride Permanent Model: Stelth 2 – SRE-008-SUB

Permanent model zinc / zinc sulfate: Stelth 2 – SRE-009-ZUR

Portable models are available upon inquiry.