LEYBOLD 250000V01, Operating Manual

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Operation
86
GA10218_002_C0 - 10/2016 - © Leybold GmbH
3.13.4 External Calibration
For an external calibration a test leak has to be attached to the part under test or
the inlet port directly depending on the application.
After External calibration ( Fig. 29 , Soft Key no. 8) has been chosen the following
messages are displayed and the described actions are required:
Check the leak rate printed on the test leak
and compare it with the leak rate at the dis-
play. If the leak rates are not identical press
Edit leak rate (Soft Key no. 4) and correct the
value.
If the leak rates are okay press START (Soft
Key no. 8).
Make sure that the cor-
rect mass is selected.
Make sure that the test
leak is connected and
opened.
Fig. 33 Display: External Calibration, Step 1
No action required.
Fig. 34 Display: External Calibration, Step 2
The bargraph display
shows a signal which
must not vary much. If so
please press OK (Soft
Key no. 8).
Fig. 35 Display: External Calibration, Step 3