Filter media test rig according to ISO 16890

Test System for characterisation of filter media and small filter elementsFor the characterisation of filter media, This test system allows to test filter media and small filter elements according to various standards on differential pressure drop, gravimetric efficiency, fractional efficiency and dust holding capacity.

The reliable, reproducible test of filter media is important for development and optimisation, as well as quality assurance during production.

Important features for characterising filter media are:

- pressure drop depending on flow rate or dust loading,

- fractional efficiency with DEHS and KCl,

- gravimetric arrestance,

- loading capacity.

The system can also be used to realise a customised filter media test with individual test conditions and freely configurable sequences.

Applications

filter tests on the basis of several standards

air filter for general ventilation acc. ISO 16890 (Discharging with TDC 585), EN779 and ASHRAE 52.2

high efficiency filters (EPA, HEPA and ULPA) ISO 29463

air filters for passenger compartments acc. to DIN 714560-1/ ISO/TS 11155-1

inlet air cleaning filters for internal combustion engines and compressors according to ISO 5011

development and optimization of filter media in accordance with internal company standards

quality assurance during production

quality inspection of flat filter media as final test during production or as incoming inspection before further processing

Standards

ISO 16890-2

ISO 29463-3

ISO 16890-3

ASHRAE 52.2

EN 779

ISO 5011

DIN 71460-1

Benefits

use of different aerosols possible (solid and liquid aerosols)

flexible design allows quick modifications and future enhancements

variable volume flow range

excellent component matching through combination of the devices

user-friendly Win data acquisition and test rig control software

Principle

The filter medium is clamped in a special filter holder, which guarantees the secure and tight fit of the test object during the test. With a few simple steps, the filter holder is removed from the test channel to change the filter medium or to determine its mass. A support grid prevents strong deformation of the test specimen at high flow rates. The final filter (absolute filter) downstream of the test filter can also be easily installed and removed for mass determination.

The fractional efficiency is determined with an optical particle counter in a particle sizes range of 0,2 to 10,0 µm. The sampling between upstream, downstream and purge is controlled by and sample switching unit. This means that only a single particle measuring device is required. The switching time of the sample switching unit is freely adjustable by the user. If required, a dilution system series or an aerosol spectrometer with a particle size range from 0,2 to 40 µm can be supplied.

Technical Data

Accessories

dust generator

atomizer aerosol generator

laser aerosol particle size spectrometer

atomizer aerosol generator

particle counter