Adixen ASM 142, Руководство пользователя

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C 303
External calibration of the leak detector
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A help for control panel utilization/access.
Operating principle of the control panel C 110 Access to level
4
- Password C 130
Setting and maintenance part presentation of the control panel
Access to parameters and parameters active depending on
authorization
C 120
Summary of screens
Complete displays list with access
way and associated sheet
C 140
Purpose of the
external calibration
In some instances, it may be convenient to display a helium leak
value so that matches a desired target value (typically the value of an
external calibrated leak connected to the installation to test or at the
inlet port of the leak detector):
• In hard vacuum test mode
When the measurement range is very different from the value of the
internal calibrated leak.
• In sniffing test mode
When a specific calibration is required in the sniffing test mode to
certify that the measurement is valided and accurated.
• In hard vacuum or sniffing test mode
When the leak detector is connected to an installation having its own
pumping system in operation and a small amount of the leak goes
into the leak detector. The external calibration allows to get a direct
readout of the current leak value.
When the helium signal needs to be displayed in a different unit for
convenience or to calibrate the leak detector if the internal calibrated
leak is temporarily unavailable (manual auto-calibration selected).
The external calibration is provided for the operator to easily obtain
a direct readout of the target value (or current external leak) thanks to
a correction factor automatically calculated and applied to the digital
display of the leak detector.
Note : For the ASI 22, the pressure measurement kit is necessary to do
an external calibration ( A 700).