AFS 155 Oil-Thread HEPA Filter Leak Test System
Visual oil-thread leak test system for integral inspection of HEPA and ULPA filter elements, exposing the upstream side to DEHS aerosol so leaks become visible as rising oil threads downstream.
Model Overview
| Model | System role | Primary measurements | Standards / application fit |
|---|---|---|---|
| AFS 155 | Visual oil-thread HEPA/ULPA leak test system | Integral visual leak detection using a polydisperse DEHS aerosol | Production and laboratory leak inspection of HEPA/ULPA filter elements |
Key Features
Visual leak indication
A leak produces a visible rising oil thread on the downstream side of the filter.
Integral filter inspection
The method provides a straightforward visual assessment of filter-element integrity.
Controlled specimen clamping
A pneumatically operated fixture secures the horizontally mounted filter during testing.
Defined DEHS challenge
The upstream side is exposed to a polydisperse oil-droplet aerosol.
Wide specimen range
The holder supports common panel-filter dimensions within the stated envelope.
Compact standalone system
The test bench offers a simple alternative where visual oil-thread testing is required.
Technical Specifications
| Parameter | Unit | Value / Description |
|---|---|---|
| TEST PERFORMANCE | ||
| Test flow rate | L/min | 50–600 |
| Specimen size | mm | 305 × 305 × 30 to 915 × 800 × 300 |
| Test aerosol | — | DEHS |
| Method | — | Visual oil-thread leak test |
| SYSTEM | ||
| Compressed-air supply | bar | 6 |
| Power supply | — | 230 VAC, 1 A |
| Dimensions | mm | 1,200 × 610 × 910 |
| Weight | kg | Approximately 100 |
Values shown are based on the standard system configuration. Confirm the final test method, specimen fixtures, instrumentation, utilities and calibration scope before order placement.
Applications
Integral visual leak testing
Inspection of HEPA/ULPA filter elements during manufacturing.
Defect identification
Visual confirmation of leakage points using the oil-thread effect.
Method comparison
Reference or comparative testing alongside particle-counting scan methods.
Panel-filter acceptance
Controlled DEHS challenge and visual integrity evaluation.
