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Fast and Reliable Porosity Testing with the new POROSCOPE®

Steel and metal are coated with corrosion resistant materials such as rubber, synthetics or enamel. The protective materials must be tight, free of pores, cracks or embedded foreign objects, to keep aggressive materials from the carrier material that is in danger of corrosion. In the coating process, fine pores or cracks cannot be entirely identified and avoided.

FISHER introduced the POROSCOPE®, an instrument which pores and cracks, not visible to the eye, can be discovered and counted in electrically non-conducting protective coatings.

At the POROSCOPE the suitable test voltage is set according to the disruptive strength and thickness of the coating. Alternatively, a test standard can be selected and a coating thickness can be set. The POROSCOPE will then adjust an appropriate high voltage automatically. The specimen is grounded and the electrode is moved slowly across the surface to be measured. The voltage drops briefly when the electrode passes a defective spot, a sparkover will occur as well as an optical and acoustical signal indicating the pore.

The POROSCOPE is used for quick and reliable pore tests on coated metals. Typical applications are Enamel- or plastic-coated mineral oil tanks, agitator kettles, pipelines, boilers and heat exchangers, plastic-coated food packages, corrosion protection coatings on offshore installations.

POROSCOPE meets the safety requirements of ISO 2746. With this instrument, every crack and pores will be found quickly and safely.

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