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A 400
Alcatel Vacuum Technology France - ATH 200 User’s Manual
Testing methods
GB
00008
- Edition
05
- February
02
GB
00008
- Edition
05
- February
02
3/4
Alcatel Vacuum Technology France - ATH 200 User’s Manual
A 400
Testing methods
or
The sniffer probe is moved over
areas likely to contain leaks.
The leak can be located.
The signal supplied by the
analyzer is not a direct
measurement of the leak.
The sniffer probe only samples
part of the helium escaping
from the part. The sample
depends on the distance
separating the leak from the tip
of the probe.
The part is placed under a
cover containing a sniffer
probe.
The leak cannot be located.
The helium from the leak
accumulates over time inside the
cover. The detector measures
the concentration of helium.
Global test
Local sniffing test
Sniffer method
(outboard testing)
The test part is pressurized with helium. The detector, via an LDS (Long
Distance Sniffer) probe, samples the helium escaping from the part.
He
part
LDS
detector
He
part
detector
LDS
Alcatel Vacuum Technology France - User's Manual ASM 182/192 TD+ - ASM 192 T2D+
Содержание ASM 182 TD PLUS
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