Hemi 100, 100 cm2 Steel Spherical Coupon by Farwest Corrosion

Spherical Shape Coupon for Cathodic Protection Testing

Attachments

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 measurements include:
- 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
Hemi-100 Coupon Details

The "Hemi-100" steel C.P. coupon is a 100 cm² spherical coupon design to improve contact with earth. The larger, sperical shape helps with soil contact upon burial.

The coupon is mounted on a durable PVC housing and the Hemi-100 is provided with a dual length of #12 AWG stranded copper cable with RHH/RHW direct burial insulation, typically green in color.
Hemi-100 Coupon Ordering Information
- Specify the Hemi-100 steel coupon
- Choose a cable length of 25, 50, 75 or 100 feet (Note that a dual cable is standard on the coupon)
- Select a cable insulation color (green is the Farwest standard) such as white, blue, orange, etc.

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 measurements include:

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

Hemi-100 Coupon Details

The "Hemi-100" steel C.P. coupon is a 100 cm² spherical coupon design to improve contact with earth. The larger, sperical shape helps with soil contact upon burial.

The coupon is mounted on a durable PVC housing and the Hemi-100 is provided with a dual length of #12 AWG stranded copper cable with RHH/RHW direct burial insulation, typically green in color.

Hemi-100 Coupon Ordering Information

Specify the Hemi-100 steel coupon
Choose a cable length of 25, 50, 75 or 100 feet (Note that a dual cable is standard on the coupon)
Select a cable insulation color (green is the Farwest standard) such as white, blue, orange, etc.