7. Operation
36
WIKA Operating Instructions High Pressure Controller, Model CPC8000-H
GB
1
4
2
3
5
9
9
3
.0
0
/0
6
/2
0
1
7
/GB
Figure 7-13 Bar Graph
7.2.14 Pressure Units
The pressure units that the CPC8000 is currently using are displayed very near the center of the main
screen, just above the bar graph. To change pressure units, touch the current unit symbol to display a
page of the units menu in the sidebar. There are forty pre-defined pressure units listed in seven menu
pages so it may be necessary to scroll through several pages to locate the desired units. On the
screen, touch either the up [▲] or down [▼] symbol to scroll to the next units page. Continue to scroll
until the desired pressure units are found; then touch that line in the menu to activate the new units.
Figure 7-14 Pressure Units
There are several tables of conversion factors for pressure units in Section 13.1, Conversion factors,
pascal. The PSI table includes the factors for conversion to or from PSI to all of the other available
units. Another table uses Bar as the basis for conversion factors to or from most of the more common
alternative units.
7.2.15 Pressure Type
Pressure type (see Figure 7-2 Main screen items) is a label of either [Gauge] or [Absolute] according
to what type of sensor is in the CPC8000-H. The exception is that this feature is an active switch
which toggles between [Gauge] and [Absolute] if there is a barometer option included in the system.
The barometer is used to emulate gauge pressure when the native transducers are absolute and
absolute when the native sensors are gauge. (See Section 4.4.5 Barometric Reference Transducer for
details of the barometric reference transducer).
7.2.16 Operating Modes
The CPC8000-H has three operating modes: Measure, Control, and Vent. After the system has been
switched on, and after a subsequent short self-test, 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 just below the front panel display.
Bar Graph
Pressure unit
Pressure type
Units menu
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