Inficon 550-300A, Operating Manual

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5-3
Working Modes
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5.3 Auto Leak Test
In Auto Leak Test mode, parts prefilled with helium can be tested integrated in a
vacuum chamber. In this case, the Modul1000 does all control functions completely
for the test run.
The test run is divided into the following steps:
Evacuation of the vacuum chamber,
Measurement of leak rate and
then venting of the vacuum chamber.
At the end of the test, the device displays „PASS“ on the control panel provided that
the leak rate did not exceed the set trigger value during the measuring time. If the
trigger value is exceeded, the device will display the message „FAIL“.
Optionally, the test can also be carried out in Partial Flow mode.
After pressing the START button, the whole test runs automatically. When using the
optional test chamber TC1000, the test cycle starts automatically as soon as the
chamber cover is closed.
5.3.1 Auto Leak Test Settings
Select the Auto Leak Test mode via the control panel or the RS232 interface.
The test run can be adapted to your special application of the leak detector. The
corresponding settings can be entered via the control panel or the RS232 interface
(refer to Interface Description).
Measuring time
The measuring time starts as soon as the Modul1000 switches over from the evacu-
ation phase to the Measuring mode. The possible time settings range from 1 second
to 30 minutes.
At the end of the measuring time, the measured value is displayed.
Trigger level
If the set trigger level 1 is exceeded at the end of the measurement cycle, the
Modul1000 indicates the message „FAIL“ and hence, it signals a leaky test sample.
Part number
In the software menu, the parts counter can be enabled, which assigns a number to
the individual measurement cycles. On the menu screen "Test report", the last 12
measured results can be displayed with date and test result.
Series error message
The menu provides a setting, with which a series error message can be displayed
when a certain number of consecutive errors with the "FAIL" result occur. The set
number of consecutive measurements after which the Modul1000 displays a series
error message can vary between 2 and 9. If not required, it can be disabled.