【scope of application 】 Electronic aperture tester, also known as filter paper aperture tester and bubble test table, is used to test the maximum aperture and average aperture of filter materials such as filter paper.
【meet a criterion 】 ISO 2942-2004 Hydraulic transmission-Filter element-Verification of structural integrity and determination of initial bubble point
GB/T 14041.1-2007 Hydraulic filter element Part 1: Verification of structural integrity and determination of initial bubble point
ISO 4003-1990, measurement of void size in permeable sintered metal materials by air bubble test
GB/T 5249-2013 Permeability of sintered metal materials. Determination of pore diameter of air bubbles JB T 5089.3 Test Methods for Paper Filter Cartridge Oil Filters for Internal Combustion Engines Part 3
GB/T 2679.14-1996 Determination of maximum pore size of filter paper and cardboard
【Performance Features】 This device features an intelligent touchscreen interface with menu-driven operation. Utilizing capillary action principles, it measures air forced through a liquid-moistened material's pores, extracting liquid from the largest pore in the test specimen. The system calculates maximum and average pore diameters by applying capillary equations to determine pressure required for the first bubble formation at specified temperatures, based on surface tension data. With advanced electronics enabling preset parameters, the large LCD screen displays pressure values and automatically calculates pore diameter measurements. Each step is accompanied by intuitive text prompts, ensuring user-friendly operation. The printer outputs individual pore diameter values and average results for multiple specimens simultaneously.