42
Operation of the UL5000
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5.3.1
Purging
Every time when the UL5000 changes into stand by mode it starts purging automa-
tically after 20 seconds. During this purging the scroll pump is flushed through purge
connection (See
/11).
When the machine is in stand by mode this operation also can be activated manually
(Key 7). By pressing the key again the purging will be discontinued. By pressing
START the activity will be discontinued, too.
5.4
The Screen in Measurement Mode
In measurement mode the leak rates can be displayed in two different modes:
•
Numerically, combined with a bargraph
•
Trend mode (leak rate versus time)
In the lower right corner of the display (next to the Soft Key no. 8) you will find a
symbol that allows to switch between the display modes by pressing Soft Key no. 8.
See Chapter
for explana-
tions of the different display modes.
Access to calibration (Soft Key no. 5) and access to the speaker volume (Soft Keys
no. 2 and no. 3) is the same in all modes. Also the status icons in the bottom line are
in common in all display modes.
5.4.1
Call for Calibration
In all modes the Soft Key no. 5 is used to get to the calibration routine. See Chapter
for further information regarding calibration.
Fig. 5-1: Display, measurement mode
