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WIKA operating instructions hydraulic high pressure controller, model CPC8000-H
PN 0018708001B 11/2020 EN
EN
6.4.2.3.1
Figure 6.4.2.3 Control Settings
Maximum and Minimum Limits
The Maximum and Minimum Limits can be found in the Control application. By default, the Control application will have the
Maximum Limit selected when first accessed(Figure 6.4.2.3). The Maximum/Minimum Limit will display a keypad on the right
side of the screen that will be limited by a range directly beneath the blue entry box. The Maximum Limit must be greater than the
Minimum Limit and less than or equal to the maximum sensor range. The Minimum Limit must be less than the Maximum Limit
(Figure 6.4.2.3.1). If a number outside of the parameters is entered, the number will display red in the blue entry box and an error
tone will occur. These entries provide a limit to the setpoint that can be chosen on the Main screen. This is often used to protect a
DUT range that is smaller than the CPC8000-H range.
6.4.2.3.2
Figure 6.4.2.3.1 Minimum Limit
Stable Limits and Delay
The Stable Limits can be found in the Control application by pressing the "Stable Limits" button (Figure 6.4.2.3.2-A). The stable
limit setting provides a tolerance window around the setpoint that will determine whether the instrument is stable. The default
stable window is set to 0.005%FS. This number can be changed from zero to ten percent of the primary sensor range. The Stable
Delay can also be found in the Control application by pressing the "Stable Delay" button (Figure 6.4.2.3.2-B). The stable delay is a
period of time that the pressure output must remain within the stable limit window before the reading turns from white to green. This
will also cause the remote stable flag to turn from "No" to "Yes". The Stable Delay units are seconds and can be set between 0 and
3600. For an example, the graph below (Figure 6.4.2.3.2-C) shows the Stable Limits set to 0.005%FS and the Stable Delay set to
5 seconds.
6. Operation
