Filter Cartridge Filtration Tester

Test System for testing air intake filter systems for rotary machinery (ISO 29461). The test system for testing air intake filter systems for rotary machinery is based on the well-established filter test system for general air filters (ISO 16890) and extended to fulfil the specifications of ISO 29461.

It was developed with the aim of testing filters with different shapes (filter cartridges, cassette filter, filter with filter bags and plane filter media) using varying test aerosols (salt, oil) under adjustable air conditions (air humidity, temperature) within the test duct. By using the test system the following filter characteristics can be determined: differential pressure curves, dust holding capacity, gravimetric efficiency, fractional efficiency, salt removal efficiency (ISO/AWI 29461-4) and water endurance (ISO 29461-2).

Applications

Testing of gas turbine intake filter systems according to ISO 29461-2 and ISO/AWI 29461-4

Testing of general air filters (ISO 16890, EN 779, ASHRAE 52.2)

Standards

ISO 29461-1

ISO 16890-2

ISO/DIS 29461-7

ISO 12103-1

ISO 16890-3

ASHRAE 52.2

ISO 16890-4

ISO/AWI 29461-4

ISO 29461-2

Benefits

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

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