INFICON Sensistor ILS500 Leak Detection System - 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