This apparatus is designed to detect of coating porosity in dielectric (insulation type) coatings on conductive substrates, including concrete.

• Digital display of applied voltage with integral battery condition indicator
• Regulated DC voltage with adjustable ranges
• Momentary on switch allows auto shut off with clip on battery pack
• Sensitivity control with power supply
• Constant test current and overcharge protection
• Earphones for noisy environments and optional On/Off switch
• Audible and visual alarm

Detector provides accurate detection of pinholes, flaws, inclusions, thin spots and bubbles in a coating. The gauge has been designed to revolutionise high voltage DC testing of coatings.