VS Series Helium Mass Spectrometer Leak Detectors
DRAFT 4/23/15
2-7
2.2.2 Home Screen
The Home screen displays a summary of the following status and configuration settings:
Two soft k e y b uttons, Con t r o l Panel and M e n u s , give access for changing the leak detector
configuration (Figure 2-2).
Figure 2-2 Home Screen
Digital Leak Rate Correlates (Figure 2-2) directly with the log bar graph leak rate dis-
play. The units for the measurements are selected on the Units
Set-Up screen (see
Section 3.1.5 “Units” on page 3-15).
Test Port P r e s s u re Appears on the Home screen and represents the test port pressure
as measured by a thermocouple device mounted on the valve
block just below the test port. The pressure transducer and
associated electronics are intended to protect the leak detector
from damage due to over-pressure conditions. Use an external
pressure transducer if the test process requires a more accurate
monitoring of the test object pressure.
❑ Digital Leak Rate Display ❑ Test Port P r e s s u re ❑ Gross Test button (not
shown)
❑ Leak Detector Status
(Table 2-3 on page 2-9)
❑ Condition Indication
(Table 2-4 on page 2-10)
❑ Reject Status Indicator ❑ System Ready Indicator
(not shown)
❑ Control Panel button ❑ Menus button
012345678910
-
10
7.8E-10 atm-cc/sec
T. P. PRESSURE:
FINE TEST
CONTROL
PANEL
ZERO MENUS
0.0E-04 TORR
-11 -10 -9 -8 -7 -6 -5 -4 -3
Log Bar Graph Display
Linear Leak Rate Display
The test port pressure
appears in black text
when pressure is too high.
when OK, and in red
The pump mode and
system status appear,
if applicable.
Accesses the
Menus screen
Accesses the
Control Panel
Zeroes out the helium signal
REJECT:
Reject
Setpoints
and status
and Range Exponent
Alphanumeric
leak rate
Units of
measurement
#3
#1
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