Testing of filter media is important for the development and optimisation of filter materials as well as for quality assurance during the production process.
Standards
VDI 3926-2
Most interesting parameters for filter media characterisation are:- differential pressure drop
- gravimetric separation efficiency
- particle size dependent filtration efficiency
- dust loading capacityFor these tasks Topas developed the AFC 131 Filter Media Test System which facilitates filter tests in accordance with guideline VDI 3926 exemplary embodiment 2 and ASTM D6830-02, but can also be used for other tests. Separation efficiency and dust loading tests on basis of the general requirements of ISO 16890, EN 779, DIN 71460-1, ISO/TS 11155-1 and ISO 5011 can be performed in small scale.Due to its compact and lightweight design this test rig can be used in the laboratory.
- gravimetric separation efficiency
- particle size dependent filtration efficiency
- dust loading capacityFor these tasks Topas developed the AFC 131 Filter Media Test System which facilitates filter tests in accordance with guideline VDI 3926 exemplary embodiment 2 and ASTM D6830-02, but can also be used for other tests. Separation efficiency and dust loading tests on basis of the general requirements of ISO 16890, EN 779, DIN 71460-1, ISO/TS 11155-1 and ISO 5011 can be performed in small scale.Due to its compact and lightweight design this test rig can be used in the laboratory.
Benefits
- standardised filter testing with alumina oxide (e.g.: Pural NF)
- automated testing procedure over 14 hours without intervention by operator
- use of different aerosols possible (solid and droplet aerosols)
- flexible design enables fast modification and future addons
- operatir-friendly control software PAFWin
Applications
- filter tests for cleanable filter according to VDI 3926-2
- determination of fractional separation efficiency, dust loading capacity and differential pressure drop of filter media
- filter tests based on other standards (air cleaning filters ISO 16890, EN 779; cabin air filters ISO 11155-1)
- development and optimisation of filter media
- quality assurance measurements
Accessories
- Atomizer Aerosol Generator ATM 220
- Solid materials disperser SAG 410
- Aerosol Dilution System DIL 550
- Aerosol Spectrometer LAP 322
| Parameter title | Unit | Value |
|---|---|---|
| test flow rate | m³/h | 2 ... 64 |
| measuring range, differential pressure | Pa | |
| duration of pressure pulse | ms | 50 ... 150 |
| pressure tank capacity | bar | 2 ... 6 |
| dimension of test specimen | mm | diameter ≤ 150 |
| power supply | - | 3 × 400 V AC, 16 A |
| operating medium, aerosol substance | - | Pural-NF, Pural-SB, DEHS |
| sensors, others | - | temperature, relative humidity |
| dimensions (w × h × d) | mm | 2800 × 1500 × 800 |
| weight | kg | approx. 120 |
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