Labom PASCAL Ci4 Series Manual page 16

6.4.3 "Adjustment" menue
The following functions are available for the adjustment:
Menue entry
Zero point
Position correction
Lower adjustment
Upper adjustment
For devices with differential pressure cell (type CI4x4x) you can also correct the zero point
of the static pressure measurement. For these devices there is an additional menue entry
called "Zero point p
st
6.4.3.1 Zero-point correction
The zero-point correction requires a non-pressurized pressure port e.g. during calibration
in the lab. When executing this function the applied pressure will be interpreted as zero bar
relative pressure.
The zero point correction results in an offset of the whole characteristic curve. Therefore it
is a special case of the lower adjustment (see below).
6.4.3.2 Position correction
Using the function "Position correction", you can correct the offset error due to the installa-
tion position independent of the zero-point offset.
In the corresponding submenue, you will find the following entries:
Menue entry
Pos.corr. on/off
Set pos. corr.
When you set the position correction, it will be activated automatically. You can deactivate
the position correction, for instance for a subsequent calibration to check the zero point
independently from the installation position.
BA_072_2020-02_10.00 Pressure transmitter PASCAL Ci4
Description
Set device at ambient pressure to zero (0 bar rel) (not with abso-
lute pressure devices)
Correct zero point error due to installation position (not with abso-
lute pressure devices)
Offset correction with applied reference pressure
Span correction with applied reference pressure
Table 8: "Pressure Adjustment" menue
".
Description
Activate/deactivate position correction
Correct position error at ambient pressure
Table 9: "Position Correction" submenue
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