HolidayTesting (HoT)

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There are two types of high voltage holiday detectors- Continuous DC and Pulsed DC.

High voltage holiday detection

High voltage holiday test is normally used to determine the existences of discontinuities in coating films. 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.

Continuous DC Holiday Detection

Continuous DC holiday detectors, such as the Elcometer 236 Holiday Detector, require direct connection to the conductive substrate. The Elcometer 236 holiday tester provides the user with complete control of voltage and sensitivity settings and is available in 2 versions- 15kV and 30kV.

Picture 1. Holiday Testing for coating film.

Picture 2. Holiday Testing for coating tube.

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HolidayTesting (HoT)

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