AutoScan ULPA/HEPA Filter

Filter Leak Detection and Efficiency Measuring System This high performance, x-y scanning, filter leak detection and efficiency measuring system is for production testing of ULPA/HEPA filters. PSL spheres are used as the aerosol challenge, and one or more laser particle counters are used downstream to detect leaks and measure filter efficiency. The system is capable of detecting leaks down to 0.12 microns and certifying ULPA filters to the 99.9999% efficiency level. Automatic operation through recipe control and data acquisition make this system ideal for testing high efficiency filters in the production environment. Each machine is custom-designed to meet the needs of the individual customer. The system includes an x-y scanner (shown at left), a control module, and associated blower, aerosol generator, diluter, etc. (not shown).

FEATURES & APPLICATIONS

    • Leak detection and efficiency certification of ULPA/HEPA filters
    • Efficiency certification to the 99.9999% level
    • 1 x 10 8ft3 PSL-sphere challenge in 720 cfm of test flow
    • Low PSL consumption through efficient atomizer design and computer-control of atomizer operation

Filter Leak Detection and Efficiency Measuring System Filter Leak Detection and Efficiency Measuring System

Filter Leak Detection and Efficiency Measuring System Filter Leak Detection and Efficiency Measuring System

General Test Requirements

The filter test system is custom-designed to meet the individual needs of the customer. The following performance specifications are typical. The actual specifications are determined for each application

(subject to change without notice)

PSL sphere size range0.1 – 0.5 µm
PSL output rate7.2 x 1010 per min @ 0.10 µm
Maximum filter size3′ x 6′
Maximum flow rate1000 cfm (optional 2000cfm)
Compressed air or N2 required8 scfm @ 80 – 100 psig
Size, weight and power consumptionDepends on specific configuration