VS Series Helium Mass Spectrometer Leak Detectors
2-16
DRAFT 4/
23/15
NOTE Pressing Zero while introducing helium tracer gas to the test
object, or while the helium background is varying significantly,
could result in the suppression of a real leak. Only use the Zero
button after the helium tracer gas source has been removed.
The Zero capability allows the testing of sensitivity levels that are
below the system background. This feature also reduces test cycle
times by reducing the amount of time required for background lev
-
els to naturally clean up or by allowing testing to begin at relatively
high test pressures. It is recommended to zero out only two
decades of signal.
2.2.4 Menus Screen
❑ Press Menus on the Home screen. The Menus screen appears (Figure 2-7). Use the
arrow to navigate to the previous screen.
The Menus screen consists of buttons to access the lower level screens used for
application-specific configuration.
Figure 2-7 Menus Screen
012345678910
C
CALIBRATION
SET-UP
LEAK RATE
RANGING
REJECT &
AUDIO
SET POINTS
TRANSFER
POINTS
CONTROL
PANEL
ACCESS
AUTO
SEQUENCER
SYSTEM
INFORMATION
SET-UP
Press a
button to
access specific
configurations.
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