Test Rig ALF 114 according to EN 779 and ASHRAE 52.2
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TO PAS BH® Test Rig ALF 114 according to EN 779 and ASHRAE 52.2 Special Features Measurements according to both standards EN 779 and ASHRAE 52.2 possible Օ Rotatable and movable duct sections Universal filter holding system Օ Online weighing of dust feeder Additional test dust feeder for ISO 12103 test dust available Օ High level of automation, mostly automated test runs with complete operator guiding through all tests, data handling and protocols Safety functions realized in a PLC Overall view of the Test Rig ALF 114 Principle The test rig has been developed for air filter testing according to standards EN 779 and ASHRAE 52.2. The following parameters of the filter under test can be detected: Օ Differential pressure and efficiency Dust holding capacity Օ Efficiency after different dust loading phases and average efficiency The filter samples can be easily installed into the rotatable and movable duct sections. A conditioned and filtrated air flow is loaded with particles. In this way information about the increasing differential pressure and the efficiency of the filters will be obtained. With these results the filter samples can be classified. The test duct is divided into 6 duct sections and constructed airproof. By dint of a filter the air is sucked in at duct section 1 and blown out behind the blower (see schematic). The pressure measuring facilities in duct section 2...5 are used for determining the differential pressure of the respective particular filter. The measurement of the pressure drop between the final filter and the protection filter is available as an option. Mixing chamber with air intake filter and aerosol generation (droplet aerosols and dust); right: interior view 1 I 2 | 3 | 4 | 5 | 6 SAG Duct sections: 1 Mixing chamber 2 Measuring chamber of the raw gas 3 Filter sample chamber 4 Measuring chamber of the clean gas and the final filter 5 Duct section with protection filter 6 Volume flow rate measuring system Schematic drawing of the Test Rig ALF 114 OS

Spcifications Technical Data Flow rate Differential pressure Test aerosol Loading dust 600 to 6000 m3/h max. 2000 Pa DEHS, KCl ASHRAE test dust, ISO 12103-A2 (fine) and ISO 12103-A4 (coarse) Pocket and cassette filters with max. dimensions 610 x 610 mm Optional: Filter cartridges, max. 400 mm diameter, length of max. 1.5 m Flat sheet filter media, max. surface 1 m2 min. 5 bar (17 m3/h) 3 x 400 V AC; 125 A; 50 Hz ALF 114: View onto the opened test duct The test rig consists of the following components: Inlet air conditioning with particle filter (min. H 13) 镕 DEHS Aerosol Generator for...