Porosity Detectors


DeFelsko PosiTest HHD High-voltage Holiday Detector

DeFelsko announces its new PosiTest HHD High voltage Holiday Detector. User-adjustable Pulse DC output detects pinholes, bubbles, and porosity in protective coatings up to 780 mils (20mm) thickness.


DeFelsko PosiTest HHD Verifier

DeFelsko's new PosiTest HHD Verifier is a calibrated voltmeter (crest meter, jeep meter) ideal for verifying the operating voltage of both Pulse and Continuous DC holiday detectors in the range from 500 to 35,000 Volts.


DeFelsko PosiTest LPD Low Voltage Pinhole Detector

DeFelsko announces its new PosiTest LPD Low Voltage Pinhole Detector! It uses a wet sponge to detect holidays, pinholes and other discontinuities on metal and concrete substrates without damaging the coating


Tinker & Rasor Model AP/W High Voltage Holiday Detector

Tinker & Rasor’s Model AP/W High Voltage Holiday Detector couples a belt-worn voltage regulator with integrated voltmeter with a hand-held PowerPak for spark testing for pinholes, air bubbles, or inclusive contamination of non-conductive coatings and linings on conductive substrates on pipelines, tanks, concrete, or steel structures. Release of AP/W’s safety switch instantly cuts power shutting the instrument off. High and low voltage ranges of 800 - 35,000 volts, adjustable by 100 v increments, audible and visual pinhole alerts, and push-button controls make the Tinker & Rasor AP/W High Voltage Porosity Detector suitable for all coatings inspection applications.


Tinker & Rasor M/1 Low Voltage Holiday Detector

Tinker & Rasor Model M/1 Low Voltage Porosity Detector features regulated 67.5 v DC output voltage to locate pinholes in thin film coatings up to 20 mils thickness using the Wet Sponge Method in accordance with NACE RP0188. The T & R M-1 is available as a battery-operated unit for coatings inspection in the field, or as AC-supplied M1/AC for use where standard AC electrical supply is available.


Tinker & Rasor APS High-Voltage Holiday Detector

Tinker & Rasor APS High-Voltage Holiday Detector is a stick-type pinhole detector featuring pulsed DC output ranging from 800 to 35,000 volts. Trigger-release safety-switch instantly shuts the instrument down, eliminating power-on when unattended. Audible and visual pinhole indicators, weather and dust-sealed voltage selector, high and low voltage ranges are key features of the Tinker & Rasor APS Porosity Detector.



PCWI Mini Crest Meter for DC Holiday Detectors

The PCWI Mini DC Crest Meter is used to test the output voltage of constant-current high-voltage holiday detectors and to confirm the accuracy of the voltage on the display.

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PCWI DC Porosity Detector

PCWI Compact DC High Voltage Porosity Detector detects pinholes, air bubbles, and porosity in non-conductive coatings on conductive substrates, including steel and concrete. Available in two voltage ranges: DC 15 (to 15kV) or DC 30 (30kV), PCWI DC High Voltage Porosity Detectors are ideal for use on storage tanks, valves, structural members, and pipelines. Light-weight, hand-held Porosity Detectors come with a full range of internal and external brush options, as well as flat brushes and pipeline coils from 2" to 56 inches in diameter. Custom sizes available by special order.


PCWI Thin Film Porosity Detector

PCWI Low Voltage Porosity Detector uses the Wet Sponge method to detect pinholes in coatings under 20 mils thickness. PCWI Low Voltage Porosity Detector features a large sponge and telescoping handle in 3-Voltage selectable and single voltage models. Conforms to ASTM G62-A. 


PCWI Pulsed Porosity Detector

PCWI Compact Pulse High-voltage Porosity Detector with regulated pulsed output for detection of porosity - bubbles, pinholes, 'holidays' - in dielectric coatings on conductive substrates, including concrete. Ideal for moist conditions, wet or contaminated coatings, or coatings likely to become electro-statically charged, the PCWI Pulse High-voltage Porosity Detector is available in three voltage models: P20 (0 - 20 kV) and P40 (0 - 40 kV) for carbon-impregnated coatings including carbonated rubber, or thick coatings such as rubber linings,  and the Pulse 50 (0 - 50 kV) for use on Rubber Coatings only.

Industry names for Porosity Detectors include: jeepers, spark testers, holiday detectors, pinhole testers.

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