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Contact SupplierIn a modern cathodic protection system it is essential to monitor and / or record continuously and precisely the Potential Difference (P.D.) between the protected structure and the environment surrounding it. Data loggers are computerized instruments into which data, control points, and other information can be entered. Some of them are so small they can fit into a ground level test station. After use, data loggers are connected to a computer and the information is downloaded. The computer can also create graphs of data
Many new instruments have recently been added to the armoury of those providing cathodic protection. Several of these are given here, which is also concerned with the resistivity of electrolytes and its measurement and the complementary use of insulating coatings and cathodic protection.