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6 Set up with the display and adjustment module
WIKA Operating Instructions - Process pressure transmitter CPT-2x
Enter the requested parameters via the appropriate keys, save your
settings with
[OK]
and jump to the next menu item with the
[ESC]
and
the
[->]
key.
Especially with chemical seal systems, the installation position of the
instrument can shift (offset) the measured value. Position correction
compensates this offset. In the process, the actual measured value
is taken over automatically. With relative pressure measuring cells a
manual offset can also be carried out.
Note:
If the current measured value is automatically accepted, it must not
be falsified by medium coverage or static pressure.
With the manual position correction, the offset value can be deter
-
mined by the user. Select for this purpose the function "
Edit
" and
enter the requested value.
Save your settings with
[OK]
and move with
[ESC]
and
[->]
to the
next menu item.
After the position correction is carried out, the actual measured value
is corrected to 0. The corrective value appears with an inverse sign as
offset value in the display.
The position correction can be repeated as often as necessary. How-
ever, if the sum of the corrective values exceeds 20 % of the nominal
measuring range, then no position correction is possible.
CPT-2x always measures pressure independently of the process vari-
able selected in the menu item "
Application
". To output the selected
process variable correctly, an allocation of the output signal to 0 %
and 100 % must be carried out (adjustment).
With the application "
Level
", the hydrostatic pressure, e.g. with full
and empty vessel, is entered for adjustment. See following example:
Position correction
Adjustment
