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Operating Instructions - CPC3050
High-Speed Pressure Controller
CPC3050
8.6.3 Automatic CPS Operation
The Automatic CPS is operated by the CPC3050 by a software purge sequence. The purge button is
visible on the home screen (Figure 8.6.3-A) after the installation of the Automatic CPS and the option is
turned to Manual or Auto.
Purge Button
Figure 8.6.3-A - Home screen with Purge button
The Automatic CPS can be set to OFF, MANUAL or AUTO by navigating to the Control Settings app and
selecting the desired option for Contamination Prevention System (Figure 8.6.3-B).
Figure 8.6.3-B - Contamination Prevention System
When in manual or auto mode, the purge valve will be opened whenever switching to vent mode while at
a positive pressure (above atmosphere). In manual mode, the internal purge sequence can be run by the
Purge button on the Home screen. When in auto mode, the purge sequence will be required to be run
when switching to control mode after a vent has occurred.
The purge sequence will require a DUT pressure to be entered by clicking the Purge button [
] and
entering a value using the digital keyboard (Figure 8.6.3-C). This will initiate the process of controlling
close to that pressure then isolating the instrument by closing the measure/control valve, then opening
the purge valve. This process will occur 4 times to ensure all contaminants are cleared from the system.
