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. 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.
 
Features：

◆ Constant test conditions according to EN 1822-4 due to automated test procedure

◆ Effective testing of larger numbers
◆ Automatic test report generation as a proof of quality in the filter manufacturing - even for the low-cost filter scanner version with manual testing
◆ Flexibly applicable for changing filter dimensions
◆ Customized data or test protocols possible
◆ Convenient control and data acquisition software
 
Technical Parameters