Filter Media Test Rig
The Filter Media Test Rig is designed for the characterization of cleanable filter media, enabling measurements according to ISO 11057. The system is suitable for dust loading tests, fractional and gravimetric efficiency determination, and quality assurance of filter media. Its modular and flexible design allows for customization and extension for small-scale filter tests along general standards.
Applications
(1) Dust loading tests according to ISO 11057.
(2) Small-scale filter tests based on other general standards.
(3) Development and optimization of filter media.
(4) Quality assurance during production and incoming inspection.
Standards
(1) ISO 11057 – Air filter media – Dust loading test method for cleanable media.
Features
(1) Long-term stable dosage and dispersion of test dust Pural NF.
(2) Flexible design facilitates quick modifications and future extensions.
(3) Compatible with a wide variety of test aerosols (solid particles, liquid droplets, atmospheric dust).
(4) Integration of Topas instruments ensures optimum performance and cost-effectiveness.
(5) Fully computer-controlled operation via user-friendly PAFWin software.
Principle
The filter medium is mounted in a dedicated holder and exposed to a controlled flow of test aerosol. The aerosol generator (e.g., ATM 220) provides stable particle or droplet dispersion. A laser aerosol spectrometer (e.g., LAP 323) measures particle concentration upstream and downstream to determine efficiency, while the differential pressure across the medium is monitored to assess dust loading and pressure drop.
Technical Data
| Parameter | Unit | Value |
|---|---|---|
| Test flow rate | m³/h | 0.5 – 5 |
| Measuring range, differential pressure | Pa | – |
| Power supply | – | 3 × 400 VAC, 16 A |
| Operating medium (aerosol substance) | – | Pural-NF, Pural-SB, DEHS |
Accessories
(1) Atomizer Aerosol Generator ATM 220
(2) Laser Aerosol Spectrometer LAP 323
FAQ
(1) What is this system for?
– Characterization and dust loading testing of cleanable filter media.
(2) Which standards does it comply with?
– ISO 11057 for dust loading tests.
(3) What types of filter media can be tested?
– Flat sheet cleanable filter media suitable for small-scale testing.
(4) How is aerosol generated?
– Via atomizer aerosol generators (ATM 220) for solid or droplet aerosols; laser spectrometer measures particle concentrations upstream and downstream.
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