Automatic Filter Scanner for Testing of HEPA and ULPA Filters acc. to EN 1822-4 Automated test protocols acc. to EN 1822-4 (ISO 29463-4, ISO 14644-3, IEST-RP-CC034 possible) Automatic test report generation as a proof of quality in the filter manufacturing - even for the low-cost filter scanner version with manual testing • • Automated HEPA/ULPA Filter Scanning Test System Principle The test filter clamped in the filter holder is passed by a test volume flow and charged with a test aerosol. Leak detection and filtration efficiency measurement is performed automatically. The relevant test data and results are logged. The system works in overpressure mode. The test air is taken from the ambient air and purified by a HEPA filter after passing through the flow measuring device. Behind the filter to be tested, the scanning traverse is located with the sampling probe of the downstream particle counter. different filter dimensions Automatic adjustment of dilution and aerosol generation depending on filter class, flow rate Customized data or test protocols possible Convenient control and data acquisition software AFS150Win Quality control and assurance in filter production For automated testing of high-efficiency air filters according to EN 1822-4 (scan-test, local efficiency), EN 1822-5 (integral efficiency), air velocity and EN 1822-3 (fractional efficiency of filter media; with additional module AFS 153) The data acquisition as well as the control of the entire system is done by the PC placed on a separate movable computer desk. Throughout the whole testing process (scan) unfiltered air and clean air concentrations are measured continuously, each with a separate particle counter. On the basis of particles counted during the test on the downstream side (clean air side) of the test filter the total filtration efficiency is calculated and possible leaks graphically displayed. Graphical representation of local filtration efficiency in the software AFSWin: potential leaks are easy

Technical Data Depending on the dimensions of the filters to be tested, the corresponding numbers, human resources and other customer constraints, the appropriate scanner version can be selected and specified: Aerosol flow rate Using the automatic filter scanner AFS 150 the filter is hermetically sealed and clamped against an adapter plate in a test chamber (filter holder cabinet). For the conversion to a different filter size the adapter plate must just be changed. The handling of large filters is facilitated by the fact that the test filter can easily slide on rollers into the test chamber....