Holiday Detector High Voltage
There are two types of high voltage holiday detectors continuous dc and pulsed dc.
Holiday detector high voltage. Holiday tests explained. High voltage holiday detector. Lightweight ergonomic design provides comfortable all day use reducing operator fatigue.
The high voltage or porosity technique can be used to test coatings up to 25mm 1 thick and is ideal for inspecting pipelines and other protective coatings. Coatings on concrete can also be tested using this method. A holiday detector is a non destructive instrument for detecting discontinuities in a coating system including holidays pinholes and cracks.
High voltage holiday test is normally used to determine the existences of discontinuities in coating films. Other names include porosity detector continuity tester and holiday tester. Holiday detector high voltage is an instrument used to check for discontinuities in coatings thicker than 500 microns 20 mils.
Low voltage wet sponge and high voltage spark tester. Detects holidays pinholes and other discontinuities using pulse dc. It typically consists of a power source a ground wire a probing electrode and an indicator.
Continuous dc holiday.