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WIKA operating instructions hydraulic high pressure controller model CPC8000-H
PN 0018708001B 11/2020 EN
EN
6. Operation
6.4.1.9
Operating Modes
The CPC8000-H has three operating modes: Measure, Control, and Vent. After the system has been switched on and the bootup
sequence has run, the instrument will automatically be placed in Measure mode. The operator can switch from one mode to
another by using the mode selection keys located on the bottom row of the Main screen. The active mode will be highlighted blue.
Figure 6.4.1.9 shows Vent mode as the active mode.
6.4.1.9.1
Figure 6.4.1.9 Operating Modes
Measure Mode
The Measure mode is activated by pressing the Measure button on the bottom left of the screen. When selected, it will be
highlighted blue (Figure 6.4.1.9.1). In Measure mode the CPC8000-H acts like a precision pressure measuring instrument or
indicator, and displays the pressure applied at the Measure/Control DUT port. This mode turns off all regulator control and puts the
system in a static state. This allows the pressure to remain held at a specific setpoint or reading without any fluctuations caused by
the controller. If the pressure raises to 4% over the max range, the reading will turn red.
6.4.1.9.2
Control Mode
The Control mode is activated by pressing the Control button in the bottom center of the screen. When selected, it will become
highlighted blue (Figure 6.4.1.9.2-A). During control mode, the CPC8000-H acts as a precision pressure controller and delivers
pressure to the Measure/Control DUT port. When this mode is initiated from Vent (Figure 6.4.1.9.2-B), the instrument will activate
the priming pump
in the hydraulic module to prime the instrument to the starting pressure. The system typically takes 3-4
priming cycles to achieve the desired pressure, but it has a maximum number of priming cycles; this can be found in the Settings
application. This default value is set to 10 cycles. If the instrument fails to achieve the priming pressure, the instrument will
vent. Check the DUT for leaks and try again. Once this priming sequence is successfully completed, the instrument will stay in
control mode and go to the setpoint. When the reading gets to the setpoint and satisifies the requirements of the stabilty window,
the reading will change from white to green. By default, the limits of control mode are based on the primary sensor range.
WARNING!
Never pressurize the instrument over the test sample range.
Overpressuing the connected test sample can lead to damage or bursting of the device under test. This can cause
personnel and property damage.
Figure 6.4.1.9.1 Measure Mode
