View Topas GmbH on TEKEN44Topas GmbH has developed an automatic HEPA/ULPA filter scanner, the AFS 152/A, which covers Parts 3, 4, and 5 of ISO 29463 and EN 1822. The main application of the AFS 152/A is the automatic scanning of panel filters in accordance with ISO 29463-4. Using this scanning method, filters are specifically checked for leaks while simultaneously determining local efficiencies. By summing the local efficiencies, the integral efficiency of the filter can also be determined. For filter designs that cannot be scanned, such as compact filters, a special hood is used to reliably measure the integral efficiency in accordance with ISO 29463-5. Alternatively, the AFS 151 Robot HEPA/ULPA filter scanner enables the scanning of three-dimensional filter elements.
ISO 29463-3
High-efficiency filters and filter media for removing particles in air Part 3: Testing flat sheet filter media
ISO 29463-4
High-efficiency filters and filter media for removing particles in air Part 4: Test method for determining leakage of filter elements-Scan method
ISO 29463-5
High-efficiency filters and filter media for removing particles in air Part 5: Test method for filter elements
EN 1822-3
High efficiency air filters (EPA, HEPA and ULPA) - Part 3: Testing flat sheet filter media
EN 1822-4
High efficiency air filters (EPA, HEPA and ULPA) - Determining leakage of filter elements (scan method)
EN 1822-5
High efficiency particulate air filters (HEPA and ULPA) - Part 5: Determining the efficiency of filter element
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