poroscope brochure
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POROSCOPE® HV5, HV20, HV40 Porosity Test Using High Voltage Coating Thickness Material Analysis Material Testing

In order to protect objects, which are made of steel or metal, they are coated with corrosion resistant materials such as rubber, synthetics or enamel. The protective coatings must be tight, that is, free of pores, cracks or embedded foreign objects, to keep aggressive materials from the carrier material that is in danger of corrosion. Fine pores or cracks cannot be entirely avoided in any coating process. The POROSCOPE is used for quick and reliable pore tests on coated metals. Typical applications: • namel- or plastic-coated mineral oil tanks, agitator E kettles, pipelines, boilers and...

Measurement Method, Features non-conductive coating material conductive substrate (grounded) a) test head b) sweeper electrode c) grounding terminal d) supply unit The test method is based on the fact that all electrically insulating coating materials have a much higher disruptive strength than air. 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 then adjusts the appropriate high voltage automatically. The specimen is grounded...

Technical Data • Voltage supply: 100 - 240 V~ • Battery operation: at 40 kV: approx. 8 h continuous operation at 20 kV: approx. 20 h continuous operation • Battery monitoring by means of smart battery technology • Test voltage: continuously adjustable: HV5: 0.8 - 5 kV, in compliance with standard 1 - 5 kV HV20: 4 - 20 kV HV40: 8 - 40 kV • Dimensions [mm]: Supply unit: approx. 200 x 125 x 50 Test head max. 0 approx. 120 Test head length: HV5: approx. 320 HV20: approx. 340 HV40: approx. 380 • Weight [kg]: Supply unit: 1.4 Test head: HV5: approx. 0.9 HV20: approx: 0.94 HV40: approx. 1 • Test...

Electrodes Suitable electrodes are available for every application. The desired electrode is simply screwed onto the test head. Sweeper electrodes: Pore testing of large-area enamel, rubber and synthetic coatings. Flat electrode with replaceable rubber tongue: Pore testing of paint coatings. Roller electrode: Pore testing of foils. Circular ring electrodes: Pore testing of exterior pipe walls. The circular ring electrodes swing open for easy placement around a pipe. Rotating electrodes: Pore testing of interior pipe walls. Up to an inside diameter of 125, the rotating electrodes look like...

Rotating Electrodes, Selection Table Selection table for rotating electrodes and thread reducers Pipe ø inside [mm] Rotation electrodes Type Thread reducer Order no. Selection table for rods and centering devices Pipe ø inside [mm] Centering device Order no. 600-717 600-718 600-719 Elastic spacer Type

Example 1: Test system for testing enamel coatings Order Example Example 2: Test system for testing interior pipe walls

Helmut Fischer GmbH Institut fur Elektronik und Messtechnik 71069 Sindelfingen, Germany Helmut Fischer AG and Helmut Fischer Technologie AG CH-6331 Hunenberg, Switzerland IfG-Institute for Scientific Instruments GmbH 12489 Berlin, Germany Fischer Technology, Inc. Windsor, CT 06095, USA Helmut Fischer S. de R.L. de C.V. 76230 Queretaro, QRO, Mexico Fischer Instrumentation Electronique 781 80 Montigny le Bretonneux, France Helmut Fischer S.R.L. 20099 Sesto San Giovanni (Milano), Italy Fischer Instruments, S.A. 08018 Barcelona, Spain Helmut Fischer Meettechniek B.V. 5627 GB Eindhoven, The...