WIKA CPC6000 - Manual (Page 43)

Automated Pressure Calibrator
CPC 6000
Mensor/WIKA Operating Instructions - CPC 6000 43
Rate: A rate (slewing speed) which best suits the user’s test requirements is selected here. The [Slow]
rate will use internal pressure generation without the use of the roughing supply and exhaust valves.
Use this mode if no external supply or exhaust pressures are applied to the selected pressure control
channel. The [Fast] rate utilizes the roughing supply and exhaust valves.
External Volume: If the autotune is turned on, the external volume of the controlled system is calcu-
lated automatically for optimum control performance. If the external volume is known, the user can
press the external volume key and enter the volume. Subsequently, if [Autotune] is turned off, the
control channel will not re-calculate the external volume on each control setpoint change which will
decrease the control times.
Autotune: If the autotune key is turned on, the control channel automatically calculates the external
system volume for optimum performance on each control setpoint change.
[Test] key: is used to enter a test mode that gives the user individual control of all solenoids. This is
further described in
Section 9 , Maintenance.
6.8 Solenoid Valve Regulator
Control Limits: The control limits cannot be set outside the maximum or minimum ranges of the
transducers installed on the active channel. To change a limit touch either of the [Limit Value] keys and
enter the new value.
Figure 6.8 - Controller Setup, Solenoid Valve Regulator
Stable Limits: The stable limit is the percent of span of the active range that the instrument can devi-
ate from the setpoint and still display a stable flag. To change the stable limit or stable delay press
the appropriate key. The pop-up number pad will show the upper and lower limits for the item being
edited.
Stable Delay: The stable delay is the number of seconds that the instrument must remain within the
stable window before the stable flag is displayed.