Automatic Feeding HEPA Filters Scanning Test System

Application Scenarios

The Automatic Feeding HEPA Filters Scanning Test System is a fully automated equipment designed for high-efficiency air filters (HEPA and ULPA) used in cleanrooms, semiconductor plants, pharmaceutical manufacturing, medical facilities, and precision electronics industries.

It is used to perform:

Average efficiency, local efficiency, and resistance testing of HEPA filters under rated air volume conditions.

Leakage detection through a point-by-point scanning method, precisely identifying leakage positions on filter media and frames.

Automatic feeding, testing, and sorting for large-scale production lines to achieve continuous and high-efficiency testing.

The system ensures reliable detection of micro-leakages and overall performance evaluation of filters ranging from E10 to U15 grades, in compliance with global standards.

Compliant Standards

This system is designed and manufactured according to the following international and national standards:

EN 1822-4 — High Efficiency Air Filters (EPA, HEPA, ULPA) — Part 4: Determining leakage of filter elements (scan method).

GB/T 6165 — High efficiency air filter performance test method: Efficiency and resistance.

ISO 29463 — High-efficiency filters and filter media for removing particles in air (international equivalent to EN 1822).

These standards ensure traceable, repeatable, and globally recognized test results, suitable for filter certification and quality assurance.

Technical Parameters

Functional Advantages

1. Intelligent Control & Full Automation

Equipped with PLC, HMI, and XYZ-axis control, enabling automatic scanning, data acquisition, and report generation.

The intuitive software interface ensures simple operation and automatic test sequencing, reducing operator workload.

Compatible with automatic feeding and sorting systems, ideal for mass production lines.

2. High-Precision Leakage Detection

Utilizes point-by-point scanning with rescan capability to locate leakage points accurately.

Leakage coordinates are automatically displayed in the software and reflected in the final test report, enabling easy repair and retesting.

Complies with EN 1822-4 scanning method for accurate local efficiency assessment.

3. Customizable Sampling & Fixture Design

Custom isokinetic sampling heads and test templates are available to fit different filter sizes and configurations.

Ensures stable and repeatable testing results across various filter types — panel filters, mini-pleat filters, and compact HEPA units.

4. Continuous Testing with Bypass Design

Adopts the main-bypass test principle, allowing continuous operation without system reset between tests.

Greatly improves testing efficiency and reduces downtime for preparation.

Ideal for production environments requiring non-stop filter testing.

5. Precise Aerosol Generation & Airflow Control

The Laskin nozzle aerosol generator provides stable and controllable aerosol concentration, automatically adjusted by software.

High-efficiency fans from well-known brands combined with flow rectifiers ensure uniform and laminar airflow distribution.

Equipped with HEPA filtration group to maintain clean airflow and prevent cross-contamination.

6. Accurate Measurement and Reliable Data

Integrates high-precision imported differential pressure transmitters and Lighthouse laser particle counters for consistent measurement accuracy.

Automatically calculates average efficiency, local efficiency, and resistance.

Real-time data is displayed on the screen and automatically saved in the database.

7. Automated Report and Data Management

The software automatically generates detailed test reports upon completion.

Reports include filter model, test conditions, efficiency curve, leakage map, and performance summary.

Supports direct printing, digital storage, and database management for production traceability and quality audit.