The test section and associated ductwork are fabricated from stainless steel. Different sizes of filter media samples and elements can be tested and are mounted in a special adapter. A window in front of the test section allows visual observation of the sample during the test. A pair of mass flow controllers is used for dosing gaseous components from gas cylinders and a new, sophisticated, dosing unit for liquid gas components has been developed specifically for this application. This is based on evaporation of a droplet spray atomized by means of a two-stream nozzle fed from a µl-dosing pump. The gas concentration can be measured downstream of the filter. An exhaust system bypassing the test channel facilitates maintaining a very stable gas dosing.
Test acc. to standards DIN 71460-1 and ISO/TS 11155-1 can be carried out using Topas Particle Filtration Test Rig PAF 111.
For filter tests both acc. to standards DIN 71460-1, ISO/TS 11155-1 and E DIN 71460-2, ISO 11155-2 Topas has designed filter test rig PAF 113 combining all features of test rigs PAF 111 and PAF 112.
- operator is guided through test routines
- modular system and instrumentation
- standard compliant testing of filter elements and filter media
Integral parts of test procedures
- Differential-Pressure measurement
- Adsortion tests according standard ISO 11155-2 (DIN 71460-2)
- Adsorption/Desorption measurement
- user-defined test procedures
|test gases||-||n-Butane 80 ppm (C4H10), toluene 80 ppm (C6H5CH3), sulphur dioxide 30ppm (SO2), ammonia 30 ppm (NH3), nitrogen (purging)|
|measuring range, differential pressure||Pa||0 ... 1000|
|test flow rate||m³/h||70 ... 700|
|dimension of test specimen||mm||max. 300 × 600|
|power supply||-||3 x 230 VAC, 16 A|
|gas analysers||-||FTIR (Equinox 55 / IFS 28, Bruker), FID (Bernath Atomic), NDIR (CLD Geräte)|
|sensors, others||-||temperature, relative humidity, absolut pressure|
|dimensions (w × h × d)||mm||1800 × 2500 × 1100|
PAF 111 test system for testing particle separation of air filters for passenger compartments (DIN 71460-1, ISO/TS 11155-1)
PAF 113 Test System for both particle separation and gas absorption/desorption of of air filters for passenger compartments (DIN 71460-1/2, ISO 11155-1/2)