TESTING FOR HOLIDAYS

摘要

David J. Barnes, Elcometer Limited, UK, reviews a pulsed DC holiday detector for anti-corrosion pipeline coatings. Inspecting a pipeline coating can often be compromised by the climatic conditions in which the pipeline is located especially when testing the porosity of the coating. Elcometer Limited has a pulsed DC holiday detector in its product range, which has been designed to make testing with a 'stick type' holiday detector safer, easier and more reliable than ever before. The Elcometer 280 Pulsed DC Holiday Detector uses the latest electronic design principles to generate the pulsed DC voltages required for detecting flaws and defects (holidays) in coatings on metal surfaces, such as pipelines and tanks, even if the coating is damp, dirty or slightly conductive.