GT Terminal Filters
The GT Terminal high efficiency filter is designed and tested to extract the smallest particles out of the air. Each GT Terminal Filter contains a ‘Minipleat-Mediapack,’ available in different heights, with a new application technology of the ‘Hot Melt Spacers’ to achieve the lowest pressure drop results.
The filter frame is made from an anodized extruded aluminium profile with two angles in each corner to get a rigid straight frame. The zinc coated hood has an attached collar and is tie glued on top of the filter. At the damper (version A) the aerosol / pressure drop checking inlet is placed in a special middle bridge and is adjustable from downstream. The fibreglass media, which is pleated in ’Minipleat shape,’ is available in three different heights (47, 56 and 70 mm) and is cast into the frame and middle bridge. This design gives a highly active filter surface and ensures the minimal pressure drop of the GT model.
Each filter is tested and packed in accordance with American Standard IEST-RP-CC-001.3 (HEPA and ULPA Filters) or in accordance with the European standard EN 1822-1, 4&5 (testing filter elements HEPA and ULPA efficiency and scan method) or customer requested testing.
XY – Scan Testing Device:
The FILT AIR XY-scan testing device is able to perform automated filter leak testing of high efficiency air filters using automatic particle counters and a motorized scan table. While the particle counter probe passes over the filter face, the computer compares the counted particles with the given leak tolerance setting. In addition, it calculates the overall efficiency for each checked filter and measures the pressure drop at nominal airflow.
Version A of FILT AIR’s damper system is a combination of an in-room adjustable damper with an aerosol inlet for efficiency in checking the installed filter. This gives the opportunity to change the airflow (filter velocity) very easily with a velocity meter from the clean room side. Furthermore, for DOP efficiency testing (of installed filters) there is an aerosol entry provided to easily bring the test aerosol to the upstream side of the filter media. Both are covered with a sealed screw to prevent any leaks.
Version B of FILT AIR’s damper system gives a functional possibility for a simple, low cost adjustment of the entering air volume. This means that there is a bridge attached to the collar that carries the damper on a thread pin. Furthermore, a gasket buffer prevents movements caused by the airflow.
- HEPA efficiencies of 95% up to 99.9995% (@ 0.3µm )
- High quality micro fibreglass paper
- Lowest initial pressure drop
- Adjustable airflow by means of a damper
- Two different damper designs
- Anodized rigid aluminum frame
- High quality standard due to Quality Assurance System
- HEPA filter tested by laser particle counting system
- Highly economical although high final pressure drop
- For use in clean rooms up to class 1
- EN 1822-5
- EN 779
- ASHRAE 52.1
- ISO 9001:2000