Inficon 540-200, Перевод оригинальной инструкции по эксплуатации

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6 | Operation INFICON
44 / 90 T-Guard2_Operating-instructions-jina85en1-13-(2009)
6.4.4.2 Carrier gas measurement
The carrier gas flow can be determined using the carrier gas pump technical data, or
by installing a mass flow controller. Alternatively, you can carry out a flow test - see
below.
Flow test ü The device must be ready to measure (READY).
1 Place the calibration leak in the measurement chamber and close the
measurement chamber.
2 Wait 30 seconds.
3 In the main menu, select “Settings > Measurement settings > Carrier gas flow >
Test flow”.
4
A window opens in which you can set the calibration leak rate.
5
Confirm with “OK”.
The device measures and the new calculated volume is displayed. You can accept the
value by pressing “OK”.
Calibration sequence • Select “Settings > Measurement settings > Carrier gas flow” and enter the carrier
gas flow.
• In the main menu, select “Trigger > Trigger level 1” and enter the trigger level for
the upcoming measurement run.
• In the main menu, select “Calibration > Test leak rate” and enter the leak rate of
the calibration leak.
• Place the calibration leak in the measurement chamber and close the
measurement chamber.
• Wait for a defined amount of time, which is calculated as follows:
• In the main menu, select “Calibration > Start calibration”.
The device measures and the new calibration value is displayed. You can accept the
new calibration factor by pressing “OK”, or cancel it by selecting “Cancel”.
Ideally, the calibration factor is 1. If the calibration factor is less than 0.5 or greater
than 2, you can accept it but a warning message appears, stating that it is possible to
improve your measurement setup.