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Technical Information
Calibrate
The following figure appears within the first twenty minutes of operation if calibrate
NOTE
is selected. This message advises you that a twenty minute warm up is strongly
recommended after a cold start up. This twenty minute warm up ensures optimum
instrument calibration and peak performance.
Select No - No calibration is performed
•
Select Yes - Calibration begins.
•
No action - Keeps the message displayed and the leak detector automatically
•
calibrates after the 20 minute timer times out.
Figure 31 20 Minute Warm-up Dialog
Agilent Helium Leak Detector User Manual
Calibrates the system. Internal or External appears to
indicate which leak the system is using to calibrate.
Automated calibration is performed based on the
parameters set on the Calibration screen.
The sequence of events is:
The leak detector exposes the internal standard leak
to the system or verifies that the test port is roughed
out and exposes the external leak to the system.
The ion voltage is scanned to find the peak signal.
The system notes the leak rate reading, turns the leak
off and zeros the system.
A gain is calculated from the leak rate reading to make
the signal match the value of the calibrated leak and
returns the system to Test mode.
73
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