INFICON UL1000 Helium leak detector - Manual (Page 50)

50
Operation of the UL1000 and UL1000 Fab
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5.4.2 Speaker Volume
On the left hand side two loud speaker symbols are shown, combined with the signs
+ and -. By pressing the corresponding softkeys (Soft Keys no. 2 and no. 3) the
volume can be adjusted for convenient loudness. In the bottom line of the display
another loud speaker symbol is shown, combined with a number. This number
indicates the level of the current loudness (ranges from 0 to 15).
Refer to Chapter 6.4.3 Volume for information on loudness, alarms, and sound
tracks.
5.4.3 Status Line in the Display
The status line at the bottom of the display informs about (reading from left to right):
STOP Danger
The hearing can be harmed by the audio alarm.
The accoustic output can exceed a level of 85dB(A).
Do only expose to the audio alarm for a short time or use ear protection.
Symbol of display Meaning Explanation
• Volume level Please refer to Chapter 5.4.2
Speaker Volume .
S1 • Trigger 1 If the trigger values are exceeded
these signs are inverted. (White on
black background.)
S2 • Trigger 2 see: Trigger 1
•• • Detected mass Number of dots indicates the mass
number (4 dots = Helium,
2 dots = Hydrogen)
• Warning triangle Please refer to Chapter 8.1
VAC • Working mode VAC or SNIFF indicate which
working mode was selected (Please
refer to Chapter
6.3 Mode ).
ULTRA • Vacuum area Depending on the inlet pressure the
UL1000 and UL1000 Fab may be in
GROSS, FINE or ULTRA, which is
indicated here (Chapter
4.3 Working
Modes )
ZERO • ZERO Indicates if ZERO-function is active.
COR • corrected leak rate Indicates if the leak rate is displayed
as air equivalent.
Auto Leak Test • Auto Leak Test Indicates if this mode is active
I•ZERO • I•ZERO Indicates if I•ZERO function is active.
STABLE • Signal stable Indicates if background signal is
stable (see Chapter
6.6.2.2 )