BA_080_en_2022-01_11.02 Pressure transmitter PASCAL CV4
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6.4.3
Menue "Adjustment"
The following functions are available for the pressure adjustment:
Menue entry
Description
Zero point
Set device at ambient pressure to zero bar
(not for absolute pressure devices)
Position correct.
Correct zero point error due to installation position
(not for absolute pressure devices)
Lower adjust.
Offset correction with applied reference pressure
Upper adjust.
Span correction with applied reference pressure
Table 8: "Pressure Adjustment" menue
Additionally, you can perform a current adjustment (see 6.4.3.4).
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
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
Description
Pos.corr. on/off
Activate/deactivate position correction
Pos.corr. adjust.
Correct position error at ambient pressure
Table 9: "Position Correction" submenue
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.
