Execution of the pneumatic connections
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When making the pneumatic connections for the leak test leads to a
few rules:
- All entries must be glued with sealing adhesive (eg Loctite). Sealing tape
or sealing hemp lead to unpredictable leaks.
- It must not be used Quick-plug connections (eg Festo) because these
connections are not long-term stable sealing. Small movements of the tubes in
the connectors can result in leaks.
- It may only come with screw nuts and corresponding clamping technique
used. Here, the glands must not be tightened so that the tube is
damaged. This also leads to long-term leakage.
- It may come only solid pneumatic tubes are used. Flexible tubes will
change the interior volume. This leads to incorrect measurements.
Most errors in leak test and flow test systems lie in the field of
sealing and tubing. Here must therefore be worked with special
care.
