Alcatel ASM 180 TD User Manual page 67

Running an
autocalibration
At start-up
1
2 During operation
2/5
Detector autocalibration
At detector start-up, as soon as the analyzer cell (spectro) is
operational, an autocalibration is performed automatically.
During operation, the calibration is checked as follows:
Electrical zero check
- Switch off the filament (indicator light off);
- check that the helium signal on the fine leak display is
at "0" (3 to 4 bars of the bargraph);
- if this is not the case, perform an electrical reset by
pressing the key
AUTOCAL
The red indicator light flashes for a moment.
In the event of failure (the red indicator light remains
lit), contact customer service.
Autocalibration
- Check that the detector is not in test mode and that the
indicator light is lit; green indicator of the cycle key
lit.
- Press the key
AUTOCAL
The red indicator light flashes;
The Helium signal oscillates and stabilizes on the fine leak
bargraph.
The green indicator light comes on to indicate that the
autocalibration has ben completed.
(see details of the autocalibration cycle in para. 4).
- It is recommended to run an autocalibration after 1 hour of
operation and then on a regular basis (once every day).
- In the majority of applications, autocalibration is used to
make sure that the detector analyzer cell is operating
correctly.
Alcatel - High Vacuum Technology - ASM 180 TD/TD+ - ASM 181 TD+ User's Manual
C 30
AUTOCAL
AUTOCAL