ISO 16890 Air Filter Test System for Gas Turbine Manufacturer
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Principle
A defined volume flow rate is sucked through a HEPA intake filter, the attached test duct and the safety filter. The test system is composed of 6 sections: aerosol inlet, upstream measurement, specimen holder, downstream measurement, safety filter and flow rate measurement. The measurement sections are equipped with ports for the aerosol characterization and the determination of the pressure drop.
Technical data
| Parameter | Unit | Value |
|---|---|---|
| Test flow rate | m³/h | 800 … 11.000 |
| Test aerosol | – | DEHS, KCl, Ashrae, ISO 12103-A2 (AC fine), ISO 12103-A4 (AC coarse) |
| Test specimen dimensions | – | 610 × 610 mm (pocket and cassette filters); diameter ≤ 400 mm, length ≤ 1500 mm (filter cartridges) |
| Differential pressure of test specimen | Pa | max. 2000 |
| Compressed air supply (operating gas/air) | bar | min. 5 (17 m³/h) |
| Water supply (operating medium) | bar | min. 3 |
| Power supply | – | 3 × 400 VAC, 125 A, 50 Hz |
| Air circulation | % | 0 … 100 |
| Sensors (others) | – | Temperature, relative humidity, air pressure |
| System dimensions (W × H × D) | m | 4.6 × 1.7 × 14.0 |
Features
Circulation mode for control of the test parameters temperature and humidity
Injection of different aerosols (NaCl, KCl, DEHS) into an optimal flow profile
Automated feeding of water droplets and supersaturated vapour
High level of automation, mostly automated test runs with complete operator guiding
Gas-Tight Test Ducts: Ensure accurate particle and gas measurements.
Modular Design: Accommodates different filter types and sizes.
High Automation: Software-driven sequences with automatic data acquisition.
Multi-Medium Testing: Supports various aerosols and pollutant gases.
Standardized Reporting: Automatically generates reports including differential pressure, dust loading, fractional efficiency, and salt removal efficiency.
Environmental Control: Built-in temperature and humidity sensors allow testing under controlled conditions.
Accessories
| Accessory / Consumable | Quantity | Description |
|---|---|---|
| DEHS Aerosol Generator | 1 | For fine aerosol particle testing |
| ASHRAE Dust Generator | 1 | For standardized dust loading tests |
| Optical Particle Counters | 2 | 0.2–10 μm, four channels |
| H14 Air Filter | 1 | For system calibration |
| Temperature & Humidity Sensors | 2 | Monitor test environment |
| Gas Analyzers | 3 | Measure NO₂, H₂SO₄, and other gases |
Operation Instructions
Safety:
Confirm power, gas, and water connections before testing.
Avoid direct exposure to aerosols and gases; ensure good ventilation.
Wear protective equipment when handling hazardous gases.
Standard-Specific Testing:
The system adjusts test conditions automatically according to ISO 16890. ISO 29461-2. or other relevant standards.
After testing, the system generates standardized reports.
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