Calibration Set-Up - Agilent Technologies VS Series Operation Manual

VS Series Helium Mass Spectrometer Leak Detectors

2.2.4.1 Calibration Set-Up

Press Calibration Leak Set-Up on the Menus screen.
❑
The Calibration Set-Up screen appears (Figure 2-8).
Use this screen to:
❑
❑
❑
❑
The calibration routine can be executed without removing the test object or test
fixture from the test port.
Select leak used
for autocal.
Full Calibration
Fast Calibration
* If the system cannot read the internal calibrated leak temperature, the system displays the
leak value and the temperature shown on the calibrated leak label. If this happens, the
calibrated leak symbol on the main screen turns red.
View the value and expiration date of the Internal Calibrated Leak
Enter the External Calibrated leak value
Select whether to use an Internal or external calibrated leak
Set the calibration mode: Full or Fast Calibration
0 1 2 3 4
CALIBRATION SET-UP
INTERNAL LEAK VALUE:
EXPIRES ON 08/02/2004
EXTERNAL LEAK VALUE:
CALIBRATE WITH
INTERNAL LEAK
EXTERNAL LEAK
Figure 2-8 Calibration Set-Up
Performs a thorough tuning process and a system gain adjustment
(calibration). The full tuning process involves scanning the ion
source chamber voltage, and optimizing each value for a maxi-
mum helium signal. Once the tuning process is complete, system
gain is adjusted to bring the leak detector into calibration. A full
calibration takes less than three minutes.
Compares the leak rate signal with the calibrated leak value and
adjusts the gain to bring the system into calibration. If the gain
value is above the upper gain limit for the working range as defined
in Section 2.2.4.4 "Leak Rate Ranging" on page 2-25, then the fast
calibration process is terminated and a flashing c symbol appears
on the Home screen. A fast calibration takes less than 30 seconds.
5 6 7 8 9
1.5E-07 @ 26 °C
8.6E-07
MODE
FULL
FAST
10
-
10
Shows the
temperature
compensated value
of the internal leak*.
Enter the
External Leak
Value.
Choose the
Calibration
Type.
DONE
2-17