Holiday Test

To detect pinholes, crack and damage coatings on conductive substrates, therefore to provide an effective safeguard against corrosion.

  • Coated piping
  • Coated tanks and vessels
  • Concrete coating
  • Steel structures coating

Using a low frequency high voltage to delivers a stabilized pre-set pure DC outputs via a probe to an inspection electrode. As the electrode moves over the coated surface, a small current flows actuating a visible sparkle at the point of contact, if it encounters a pinhole or flaws,