Abstract
An advanced cathodic protection coupon design which eliminates almost all of the soil IR drop during current-on potential measurements has been developed. Potential measurements are made through a slot in the geometric center of the coupon, a design sometimes referred to as a concentric coupon. This design greatly minimizes the electrolyte distance between the reference electrode and the coupon, which, in turn, minimizes the IR drop error contained in the measurements. This paper presents results from laboratory and field tests on this advanced coupon design.
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2005
Association for Materials Protection and Performance (AMPP)
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