By continuing to browse this website or by clicking 'I Accept', you agree to the use of cookies. Cookies are stored on your computer or mobile device and enhance your site experience. To learn more about how we use cookies, you can click the 'Learn More' button.
Cathodic protection coupons are a simple, size-specific piece of metal with one or more wires attached and are used for evaluating corrosion control or cathodic protection systems protecting a structure, typically a steel pipeline. These measurments includes:
Native or unprotected structure-to-soil potentials
Structure-to-soil potentials with the CP system energized
Structure-to-soil potentials with the CP system interrupted
To emulate an “OFF” structure-to-soil potential without interrupting CP current, typically referred to as a “Coupon Interrupt” reading.
For magnitude measurements of AC current density on a structure with known induced AC issues.
Use as an isolated coupon to evaluate native or unprotected potentials.
Flathead-1 Coupon
The "Flathead-1" steel coupon is a 1 cm2 coupon made from 1018 alloy steel. The steel coupon is flush mounted inside a durable PVC housing. This coupon includes a specified length of #12 AWG stranded copper cable with RHH/RHW direct burial insulation, typically green in color.