Inficon 550-300A, Operating Manual

Page: 56 / 128

6-15
Operation
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6.9 Explanation of Menu Items
The menu items on which the explanation refers to are written in bold letters.
Pressing the MENU button displays the selection menu. The software menu opens
the menu level which was left before.
If you press the MENU button once more, you can leave the software menu again.
With pressing the MENU button for 2 seconds the display changes to the upper menu
level, the Main Menu.
6.9.1 Main menu
o
Return
Returns to the previous page, does not alter any setting.
6.9.2 Main menu
o
View
o
Scale linear / logarithmic
This setting is for changing the scales of the bar graph and the Y-axis (refer to the
chapter Display of Measured Values).
There is the choice of linear and logarithmic presentation. Only in the logarithmic
view, the number of shown decades can be changed by pressing the keys "
n
" and
"
p
".
o
Display range auto / manual
The upper limit of the displayed bar graph and the diagram can be set manually or
automatically.
• Manually:
If selected manually, any upper detecting limit between 10
+3
mbarl/s and 10
-
8
mbarl/s can be set for the bar graph or the Y-axis to show the leak rate
graphically.
The lower detecting limit results from the scale setting (refer to chapter "Scale
linear/logarithmic"
• Automatically:
In the "Automatic"-setting, the bar graph and the Y-axis are automatically
adjusted when the value for graphic leak rate presentation is higher or lower.
o
Time axis
The length of the time axis in trend mode can be changed in steps from 16 to 960s.