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Alcatel Vacuum Technology France - ASM 182 TD+ - ASM 192 T2D+ User’s Manual
Basic internal auto-calibration of the
leak detector
Edition 03 - December 01
GB 00969 -
Purpose of the
internal auto-calibration
Check that the leak detector is correctly adjusted to detect the
carrier gas selected and to display a correct leak value.
To calibrate the leak detector, a calibrated leak is used as a
reference: the leak detector is equipped with an internal
helium calibrated leak with reservoir and temperature
compensation sensor.
The internal auto-calibration could be:
- fully automatic if the operator uses the calibrated
leak in the detector,
- semi-automatic if the operator uses an external
calibrated leak.
■
When starting the leak detector in order to make sure that it
is in proper operating condition.
■
For high sensitivity test and optimized measurement
accuracy: it is advised to let the internal temperature of the
leak detector stabilize for about 30 min after start-up and then
start an auto-calibration.
■
If in doubt regarding the proper operation of the leak
detector (capability to properly detect a helium leakage): at
any time, an internal auto-calibration may be started.
■
In case of intensive and continuous use: start an internal
auto-calibration at the begining of each shift (8 hours of
operation).
When should an
internal auto-calibration
be performed?
