All equipment may only be operated on compressed air networks with clean,
oil-free and filtered air. The filter degree is here at min. 10
microns. As a rule, it is sensible to switch a corresponding
maintenance unit into the supply before the device.
The minimum pressure of the pressure supply must be approx. 100 kPa above
the required test pressure. In this case, however, the maximum connected load
of the device must be observed (device configuration).
In order to avoid fluctuations in the measurements, the test air supply of
the devices should be decoupled from all other consumers. Minimum is a
maintenance unit. Sometimes the buffering of a buffer can be useful.
The compressed air supply for all test
systems should comply with the following classification according to DIN
Particle class 2 (<= 5μm) Water class 3 (pressure dew
point -20 ° C) Oil class 2 (<= 0.1 mg / m3)
No guarantee or
liability is assumed for contamination by liquids or solid particles in the
pneumatic circuits and the resulting damage to the pneumatic components as well
as damage to the pneumatic components by supplying an external pressure to the
test sample connection. This also applies to possible consequential damage in
test equipment or test parts.
The vacuum pump used or the available vacuum network must be designed for
the test so that the test part is safely evacuated within the desired cycle
In the case of the vacuum variant, the device behaves like a large vacuum
cleaner. As a rule, it is therefore very useful to integrate a test air filter
into the test line between the test part and the device. Otherwise there is a
risk that the dirt particles from the test part can get into the measuring
technology of the device and cause damage there.