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Alcatel Vacuum Technology France - ASM 180 TD/TD+ - ASM 181 TD+ User’s Manual
Helium measurement problem
Edition 04 - September 97
S
YMPTOM
C
AUSE
R
EMEDY
Release the key
GL key engaged
The indicator light is on
No change to Fine Leak
mode
P < 2.10
-2
mbar
Wait for a spectro
pressure < 10
-4
mbar
High triode gauge pressure
Analyzer cell degassing time
too short
Clean and recondition
(
see E 10
)
Cell contamination
The cell is dirty
Low sensitivity
Contact customer service
Contact customer service
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