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 ISO8573-1:
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 time.
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.