Defelsko PosiTest HHD | High voltage Holiday Detector kuwait
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Part Number : PosiTest HHD
After a protective coatings has been applied, it is important to ensure there are no defects or discontinuities present that expose the substrate beneath. Small areas of thin or missing coating, called 'pinholes' or 'holidays', can become foci for corrosion and drastically reduce the life of a protective coating system. A holiday detector is a non-destructive instrument used for detecting these discontinuities. Other names include porosity detector, continuity tester, and holiday tester.
DeFelsko offers two types of porosity/pinhole detectors: low voltage (wet sponge) and high voltage (spark tester). Low voltages detectors, like the PosiTest LPD, are typically used on coating systems less than 500 µm (20 mils) thick. High voltage spark testers, like the PosiTest HHD operate at voltages up to 35,000V and are typically used on coatings more than 500 µm (20 mils) thick.
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Output Voltage Range
0.5 — 35 kV
Output Voltage Adjustment
0.5 kV — 1 kV: 10 Volt Steps 1 kV — 35 kV: 100 Volt Steps
Regulated pulse DC voltage output that won't change under load —±5% voltage accuracy
Voltage calculator feature — choose one of 11 international standards, and input the coating thickness to automatically calculate the required test voltage
Extensive electrode options — choose from a wide range of rolling spring and flat wire brush electrodes or use electrodes from other manufacturers with optional adaptors — custom sizes available upon request
Long Form Certificate of Calibration included with each instrument
Conforms to ASTM D4787/D5162/G62, ISO 29601, NACE SP0188/SP0274/SP0490, AS3894.1