Dr. Livingstone, I Presume WELDWISE 2400 - Manual (Page 111)

0435-INS-400 Rev. D
8-7
Air Cylinder:
Multiply the surface area of the bore of the cylinder by the airline pressure. Input this number as
the Point 2 value.
For example, an 8" bore cylinder with a 70 psi line pressure:
Surface area of the bore = πr 2
Radius of an 8" bore = 4"
4
2 = 16
16*3.14 = 50.24
50.24*70 psi = 3516.8 psi electrode force
Enter '3516.8' in the Point 2 value field.
Note: Many tandem or multiple piston cylinder manufacturers supply force @ inlet pressure
specification charts.