Section 2. Operating The Leak Detector; Initial Startup, High Pressure Test Setup, And Shutdown - Agilent Technologies VS Series Operation Manual

VS Series Helium Mass Spectrometer Leak Detectors

Section 2. Operating the Leak Detector

2.1 Initial Startup, High Pressure Test Setup, and Shutdown

2.1.1 Startup
To start the leak detector:
1. Plug the leak detector power cord into an appropriate mains supply receptacle.
2. Move the power switch on the rear power control panel to the l position. If you have a
bench system with a separate backing/roughing pump, turn the pump on. The Vent and
Test buttons are disabled on start up until System Ready appears on the Home screen.
The System Ready indication appears on the Home screen. If the leak detector is being
started after a long period of being off (several hours), it can take up to three and a half
minutes to stabilize and provide reliable, quantitative leak rate readings.
The leak detector is capable of performing an automated calibration routine using either
an internal calibrated leak (factory installed), or an external calibrated leak placed into
the system test port. Refer to Section 2.2.4.1 "Calibration Set-Up" on page 2-17 to
properly set-up the leak detector for auto-calibration.
3. Execute a calibration routine:
Internal calibrated leak:
❑
a. Press Test on the front panel to place the system in test mode.
b. Press Control Panel on the Home screen.
The Control Panel appears.
c. Press Calibrate.
The system performs an automated calibration of the system.
If the system was recently calibrated before shut down, it can
NOTES
be used for qualitative testing. Read the standard leak to verify
accuracy. For more accurate quantitative leak values, perform a
calibration 30 minutes after start-up.
To accurately read in the most sensitive decades (E-10 and
E-11), warm up the leak detector for at least one hour prior to
performing a full calibration. When leak checking in the E-9
atm-cc/sec range or higher, you can use the leak detector prior
to one hour and verify system performance by assuring that the
system can accurately read the internal calibrated leak.
The system is shipped from Agilent with the Range Stop
function turned ON and the bottom range set at the E-10 range
(atm-cc/sec). To accurately test in the E-11 range, careful
control of materials and the environment is required, consult a
Agilent sales engineer for support.
2-1