Pfeiffer Vacuum adixen ASI 30 User Manual

Advanced settings
56
7.4.2 Correction factor
The correction factor allows correction of the measured leak rate by the detector when it
is combined with parallel pumping.
Fig. 34: "Correction" screen using a function key
Displays: digital and
bargraph
Only the digital display is corrected by the correction factor: the correction factor does
not apply to the bargraph display.
The customer's external primary pump does not constitute parallel pumping. A correction
factor has to be implemented.
7.4.3 Automatic Cycle End
This function allows automatic control of the roughing time and measurement time in a
hard vacuum test.
7.4.4 Memo function
This function freezes the "Standard" screen and displays the most recent test result: the
leak rate displayed flashes.
From the "Settings" screen, press [Test].
HV Correction/Sniff.
Correction
Ö Activate the correction factor application.
Ö Set the correction factor to be applied.
For quick access from the control panel, set a function key for [Correction] (see
7.7.2).
Use the correction factor to work in a unit other than the one suggested if parallel
pumping is installed, or if the Helium used is not 100% Helium 4: (see 11.3) for the
factor to be applied.
Depending on the concentration of tracer gas used for detecting leaks, the leak
rate displayed changes.
– Example: the leak rate displayed with a calibrated leak of 1·10
-8
Pa·m
3
/s
(1·10
-7
mbar·l/s) (with 100 %
4
He) connected to the detector's inlet.
% He in the gas used 100 % 50 % 5 % 1%
Leak rate displayed on
the leak detector without
correction
1·10
-8
Pa·m
3
/s
1·10
-7
mbar·l/s
5·10
-9
Pa·m
3
/s
5·10
-8
mbar·l/s
5·10
-10
Pa·m
3
/s
5·10
-9
mbar·l/s
1·10
-10
Pa·m
3
/s
1·10
-9
mbar·l/s
Correction value 1 2 20 100
Leak rate displayed on
the leak detector with
correction
1·10
-8
Pa·m
3
/s
1·10
-7
mbar·l/s
From the "Settings" screen, press [Test] [Cycle End].
Automatic cycle
end
Ö Activate the function.
Function activated if ’automatic’ is set.
Roughing timer Setting optional if ’automatic’ is set.
Ö Activate the control for the roughing duration.
Ö Set the maximum roughing duration allowed.
If the control is activated and the duration expires (detector still in roughing) = part re-
jected.
Test timer Setting required if ’automatic’ is set.
Ö Set the measurement duration.
When the duration expires, the measured leak rate is displayed.
Function to use to automate small production or carry out repetitive operations
with different detectors.

Pfeiffer Vacuum adixen ASI 30 Specifications

General

Brand	Pfeiffer Vacuum
Model	adixen ASI 30
Category	Security Sensors
Language	English