Agilent Technologies VS Series Reference guide

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.
Test
Button
Ve n t
Button
1
2
3
4
5
6

Control Panel Screen
This screen accesses frequently used functions.
•PressControl Panel on the Home screen and the screen
appears.
(1) STD LEAK - Introduces helium from the internal
standard leak into the system, and is only functional
while the leak detector is in fine test mode. It allows for
verification of the system sensitivity and calibration.
When active, STD LEAK appears on the Home screen
status line.
(2) ZERO ENABLE - Activates the Zero function on the
Home screen, allowing an operator to exclude the
background helium signal from the leak rate display.
(3) Audio Controls - The audio signal is a unique
pitch/frequency signature at every leak rate so that the
relative size of the leak can be gauged by ear.
• Volume Adjust - Press or to
decrease/increase the volume of the audio signal.
• Volume On/Off- Press to toggle audio signal
on/off. The volume level is restored at the same level
as when shut off.
(4) HOLD - Places the system in Hold and isolates the
vacuum system from the test port, but does not vent the
test port. This only functions while in Test mode.
(5) CALIBRATE - Press CALIBRATE and an automated
calibration is performed. Internal or External Leak
appears to indicate which leak the system uses to
calibrate.This parameter is set on the Calibration
Set-Up screen.
(6) DONE- Returns unit to Home screen.
Calibration Set-Up
This screen indicates the current leak rate of the internal
standard leak, and accesses the following functions:
(1) INTERNAL LEAK VALUE - Displays the leak rate of the
internal Std Leak, compensated for the unit’s internal
temperature.
(2) EXPIRES ON- Displays the date one year after the
installation of the internal Std Leak.
(3) EXTERNAL LEAK VALUE - Change the value of the
leak that you installed by pressing on this text and
entering your leak value.
(4) CALIBRATE WITH - Sets which leak is used during the
calibration routine.
(5) Mode - Sets the calibration mode:
•FULL calibration optimizes all of the appropriate
parameters in approximately three and a half
minutes.
•FA S T calibration adjusts only the gain parameter and
takes approximately one minute.
If the gain goes above a predetermined limit, the unit
switches from Fast to the Full mode.
Screen Flow
12
3
4
6
1
2
3
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Manual No. 699909943 Rev. C
June 2010
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