EN 1822-3 HEPA and ULPA filter testing System
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Web: standard-groups.com
Application
(1) Small HEPA Filter Element Efficiency Testing: Verification of overall efficiency for small HEPA elements.
(2) HEPA Filter Grade Confirmation: Determine HEPA classification according to standards.
(3) Integrated Production Control: Can be integrated into the production line for real-time quality assurance.
Standards
The system supports and complies with:
(1) GB/T 13554-2020 – High-efficiency air filters.
(2) GB/T 6165-2021 – HEPA filter performance: efficiency and resistance.
(3) EN 1822-3 – HEPA and ULPA filter testing methods.
(4) EN 1822-4 – Efficiency and leakage test for HEPA filters (0.3–0.5 µm).
(5) ISO 29463-4 – HEPA/ULPA filter performance standard.
(6) ISO 29463-3 – HEPA/ULPA filter design, performance, and acceptance testing.
Parameters
| Parameter | Unit | Value |
|---|---|---|
| Test Flow Rate | m³/h | 25 … 130 |
| Test Cycle | s | 30 |
| Differential Pressure Range | Pa | 0 … 3000 (±1% final value) |
| Test Sample Dimensions | mm | Max 300 × 300 × 300 |
| Power Supply | – | 3 × 400 VAC, 50/60 Hz, 16 A |
| Operating Gas/Air | – | Custom (DEHS, paraffin oil, NaCl, etc.) |
| Particle Measurement | – | Particle counter (4 or 8 channels) with vacuum pump |
| Other Sensors | – | Temperature, relative humidity, barometric pressure |
| System Dimensions (W × H × D) | mm | 2000 × 1500 × 1000 |
| Weight | kg | approx. 600 |
Accessories
| Accessory | Quantity |
|---|---|
| Aerosol Generator | 1 |
| Particle Counter (4 or 8 channels) | 1 |
| Self-Regulating Dilution System | 1 |
| Test Filter Adapter | Customized per filter element |
| Temperature & Humidity Sensor | 1 |
Test Principle
Overall Efficiency Testing:
DEHS aerosol is generated upstream; particle concentrations are measured upstream and downstream.
Upstream concentration is measured with an optical particle counter and adjusted via the dilution system.
Downstream concentration is measured similarly; overall efficiency is calculated and compared to nominal target.
Efficiency Comparison:
Overall measured efficiency is compared with target efficiency to quickly classify “pass” or “fail.”
Differential Pressure Measurement:
Measures pressure drop across the filter element, generating pressure curves and dust loading capacity data to ensure stable performance at different flow rates.
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