4 set up test area, Set up test area – INFICON Sensistor ILS500 Leak Detection System User Manual
Page 31

Setup
31
ninb63e1-f (1410)
6.4
Set Up Test Area
Test Area Recommendation
•
Place fresh air intake on outer wall of building.
•
Place air intake far away from tracer gas exhaust, cargo bays and other hydrogen
sources.
•
Do not use compressed air as fresh air supply.
Industrial compressed air often contains varying and substantial amounts of
hydrogen.
Fresh Air Curtain Recommendation
•
Try to create a laminar flow over the test area.
•
Curtain should cover the entire test area (test hood or sample point) and extend at
least 0.5 m outside the area.
•
Air speed in curtain should be rather low, typically 0.1 m/s.
•
Additional small fan(s) can be set up within the curtain for directional purging of test
chamber etc.
1
Fresh Air Fan
2
Exhaust Fan
3
Test Area
4
Test Building
1
Fan
2
Local Air Jet
3
Test Object
4
Filter
1
3
4
2
Large distance
3
1
2
4
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