Porosity (Holiday) Detection
The premature corrosion of a substrate is often due to the failure of it's coating. Major causes of failure are flaws in the finished coating, these include pinholes, holidays, inclusions, thin spots and bubbles.
NZ Inspection Rentals Ltd have a range of wet sponge and high voltage porosity (holiday) detectors for film builds on pipe and tank linings ranging from 50µm - 10mm thick.
A PCWI High Voltage Detectors 30 KVA
The PCWI Compact (previously known as the Hi-Lighter) is small and lightweight with a clip-on battery pack, and features: digital display of applied voltage; constant test current, fully adjustable voltage and sensitivity controls. It can be used in most applications including pipelines, steel structures and tankwork.
Commonly known as holiday detectors, spark testers or jeepers. High Voltage DC Porosity detectors also known as holiday detectors are used to ensure the longevity of coating systems by locating pin holes, air bubbles, and porosity in non-conductive coatings on conductive substrates, including concrete. Available in 2 range: 0-15kV and 0-30kV.
Watch a You Tube demo of a PCWI hii voltage unit in use: https://www.youtube.com/watch?v=1NX5X5d6aJM
A PCWI Wet Sponge Detectors 9, 64 & 90V
PCWI Compact Wet Sponge Tester. Holiday detector.
Models available: 9, 67,5 and 90 volt Selectable and 67.5 volt fixed.
Large sponge head & telescopic handle which extends to 1.2m.
These units are also known as wet sponge testers, low voltage holiday detectors, low voltage Porosity detectors, pin hole detector.
Protective Coating Consultants and Certified Inspectors for Independant Third Party Inspections and Vertification Services.
Corrosion and Materials Engineering Services
For over 11 years we are pleased to offer our on-going support for training and development in the protective coatings and linings industries throughout New Zealand & Australia.
We support the following organisations in our roll.
