VS Series Quick Reference Card
Start Up/Shutdown
Start Up
1. Plug the leak detector power cord into an appropriate 20
A mains supply receptacle.
2. Move the power switch on the rear power control panel
to the lposition. The SYSTEM READY indication
appears on the lower left of the Home screen in the
status line after about 3.5 minutes.
Refer to the VS Series Helium Mass Spectrometer Leak
Detector Operation Manual for instructions to accurately
read in the E-9 to E-11 range.
Verify Sensitivity/Calibration
1. Press the TEST button.
2. Press CONTROL PANEL on the Home screen.
3. Press STD LEAK to open internal calibrated leak.
4. Verify that the leak reads the same as the leak value
found on MENUS/CALIBRATION SET-UP screen.
If the unit does not accurately read the value of the STD
LEAK (+/- 2 minor divisions), calibrate the unit.
5. Press the Xbutton to close the internal leak.
Execute Calibration
1. Press TEST button to place the system in test mode.
2. Press CONTROL PANEL on the Home screen and the
Control Panel appears.
3. Press CALIBRATE. The system performs an
automated calibration of the system to the internal
standard leak in approximately 3 minutes. After
calibration, the unit returns to Test mode.
For information on calibrating to an external standard leak,
see the VS Series Helium Mass Spectrometer Leak Detector
Operation Manual.
Shutdown
• Move the power switch on the rear power control panel
to the 0position.
The system can be in any mode when shut down. When the
system is shut down, all valves in the system close. If the
system is not in Vent mode, the test port remains under
vacuum and may be difficult to open.
Test/Vent Controls
•Te s t - When the system is in the Vent state, press TEST
to automatically advance the leak detector through
roughing, and into test
•Ve n t - Advances the unit to the vented state; press and
hold VENT for one second.
Custom tests cycles, including the rough time, test time, and
leak rate reject levels are activated from the MENU/REJECT
& AUDIO SET POINTS and AUTO SEQUENCER screens.
Home Screen
This screen is generally active during leak detector use and
contains information that is needed for everyday operations.
(1) Linear and/or Log Leak Rate Bar Graph - Displays
real-time helium readings.
(2) Digital Leak Rate - Correlates directly with the bar
graph leak rate display. The units of measurements are
selected on the Units Set-Up screen.
(3) Test Port Pressure - Displays the test port pressure as
measured by a thermocouple device mounted just
below the test port. The test port pressure appears in
black text when OK and red when above maximum test
pressure, 10 Torr.
(4) Reject Status Indicator - Indicates when any of the four
independent set points are enabled and activated.
(5) Status - Displays the current leak detector operating state
or condition.
(6) Zero - Used to negate the presence of background
helium. It is only visible on the Home screen when
activated from the CONTROL PANEL screen.
Gross Test - Replaces Zero when Gross Test is activated
(ADVANCED PARAMETER screen). Opens the Gross
Test screen to locate leaks in roughing mode.
