PCWI Wet Sponge Low Voltage Pinhole Detector 0789 / WETSPONGE

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Measuring Range: 0 to 20 mils (0 to 500 µm)

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Test Voltage: Selectable 9, 67.5 or 90V

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These units are also known as wet sponge testers, low voltage holiday detectors, low voltage porosity detectors or pin hole detectors.

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Conforms to ASTM G62-A, NACE RP0274-98, ASTM G-6, AS3894.2 & AS1580.485.1

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The PCWI 0789 Wet Sponge Low Voltage Porosity Detector is designed to non-destructively detect pinholes in coatings up to 500um using the "wet sponge method". A voltage from the battery supply is transmitted through the probe and dampened sponge attached. Because the instrument's earth is connected to the substrate, when a flaw is encountered, the conductive path is made and the alarm sounds.

The unit features three test voltage options; 9V for coatings up to 300um, 67.5V for coating assessment to ASTM standards, and 90V for coatings up to 500um.

Please note: while the PCWI Wet Sponge Detector has a maximum range of 500um, we highly recommend that coatings over 150um, or coatings in corrosive environments, be high voltage porosity tested

Kit Contents

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Features

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• LED display of voltage
• Internally mounted 9 Volt battery
• Low battery condition LED indicator
• Audible and visual fault alarms
• Telescopic handle for user confort (extends to 4/1.2 m)
• Large probe head (9" x 1.57"/230 x 40mm) and wider sponge gives faster tests. Smaller probe heads available.
• Earphone jack to allow testing in noisy environments (earphone not supplied)
• The PCWI wet sponge tester comes with selectable 9, 67.5 or 90V test voltage
• Use the wet sponge method to detect pinholes in thin coatings

Specifications

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Range	0 to 500 micrometres
Operating Temperature	32 to + 122ºF - 0 to 50 degrees Celsius
Test Voltage	9, 67.5 and 90V (selectable)
Accuracy	+5% to -10%
Alarm	Audible and Visual
Duration	Audible 300ms minimum
Sensitivity	The alarm will sound when the resistance drops below 90kohm (+/- 10%)
Power	9V Battery
Battery Life	8 hours continuous (at 90V)
Telescopic Probe Length	14" to 47" - 350mm to 1.2m
Dimensions	8.25" x 3" x 1.25" - 210 x 75 x 35mm

Control Panel

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Downloads

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PCWI Compact Low Voltage Wet Sponge Pinhole Detector - Data Sheet

PCWI Compact Low Voltage Wet Sponge Pinhole Detector - Instruction Manual