PCWI High Voltage Holiday Detectors are light-weight, fully-portable DC holiday detectors for the detection of pinholes, air bubbles, and porosity in non-conductive coatings on conductive substrates, including concrete. PCWI High-Voltage Holiday Detectors are suitable for pinhole detection in coatings up to 300 mils on pipelines, storage tanks, valves, and many other structures.
PCWI DC Holiday Detectors come in two voltage ranges: DC15 to 15kV, DC30 to 30kV.

The PCWI HIGH-VOLTAGE HOLIDAY DETECTOR is a light-weight, fully portable high-voltage holiday detector with regulated pulsed output for detection of pinholes in dielectric coatings on conductive substrates, including concrete. The PCWI Pulsed Holiday Detector is ideal for holiday detection in moist conditions, in wet or contaminated coatings, or in coatings likely to become electrostatically charged, such as plastic or fiberglass-type coatings

PCWI Pulsed Holiday Detectors come in three models:

• P20: 2 – 20 kV
  
• P40: 5 – 40 kV
  P60: 10 - 60 kV

PCWI LOW VOLTAGE HOLIDAY DETECTOR, popularly called a Thin Film Holiday Detector, Pinhole Tester, or Wet Sponge Tester, uses the Wet Sponge Method to detect pinholes or flaws in coatings of up to 20 mils thickness. PCWI Wet Sponge Tester features a large sponge and telescoping handle in 3-Voltage selectable and single voltage models.