Automated Oil Thread Leak Testing System
Whats/App: +86 156 1874 6768
Web: standard-groups.com
Applications
integral visual leak testing of HEPA/ULPA filters
Standards
This system complies with or supports testing according to the following international standards:
(1) ISO 16890-2: Air filters for general ventilation – Part 2
(2) ISO 16890-3: Air filters for general ventilation – Part 3: Efficiency testing
(3) ISO 16890-4: Air filters for general ventilation – Part 4
(4) ASHRAE 52.2: Method of Testing General Ventilation Air-Cleaning Devices
(5) EN 779: Particulate air filters for general ventilation
(6) ISO 10121-3: Cleanroom air filter testing
Principle
The filter element (sample) is mounted horizontally with the upstream side down on the test bench and secured with a pneumatically operated fixing device. For testing, the filter is then exposed to a flow of a polydisperse aerosol of oil droplets (DEHS).
An existing leak is made visible on a rising oil thread on the downstream side (upper side) of the filter.
Technical data
| Parameter | Unit | Value |
|---|---|---|
| Test flow rate | L/min | 50 … 600 |
| Dimensions of test specimen (W × H × D) | mm | min. 305 × 305 × 30 / max. 915 × 800 × 300 |
| Operating medium (aerosol substance) | – | DEHS |
| Compressed air supply (operating gas/air) | bar | 6 |
| Power supply | – | 230 VAC, 1 A |
| System dimensions (W × H × D) | mm | 1200 × 610 × 910 |
| Weight | kg | approx. 100 |
Accessories
Housing and Lightning
Operation Instructions
System Setup: Mount filter horizontally in the pneumatic holder. Confirm compressed air and electrical supply.
Parameter Adjustment: Set aerosol flow and test duration according to filter size.
Test Execution: Apply DEHS aerosol to the upstream side. Observe downstream for rising oil threads indicating leaks.
Data Recording: Record visual inspection results manually; optionally photograph for documentation.
Safety: Ensure aerosol is contained, and personnel avoid direct contact.
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