Cerabar S/Deltabar S/Deltapilot S FOUNDATION Fieldbus Parameter description (Local operation and FieldCare)
Endress+Hauser 139
POS. ZERO ADJUST (685)
Entry
Position adjustment – the pressure difference between zero (set point) and the measured
pressure need not be known.
Due to the orientation of the device, there may be a shift in the measured value, i.e. when
the container is empty, the MEASURED VALUE parameter does not display zero.
Example:
– MEASURED VALUE = 2.2 mbar (0.033 psi)
– Correct the MEASURED VALUE via the POS. ZERO ADJUST parameter with the
"Confirm" option. This means that you are assigning the value 0.0 to the pressure
present.
– MEASURED VALUE (after pos. zero adjust) = 0.0 mbar
The CALIB. OFFSET parameter displays the resulting pressure difference (offset) by which
the MEASURED VALUE was corrected.
Prerequisite:
• This parameter is displayed for Deltabar S, Cerabar S with gauge pressure sensors and
Deltapilot S.
Options:
• Abort
•Confirm
Factory setting:
0.0
POS. INPUT VALUE (563)
Entry
Position adjustment – the pressure difference between zero (set point) and the measured
pressure need not be known. To correct the pressure difference, you need a reference
measurement value (e.g. from a reference device).
Due to the orientation of the device, there may be a shift in the measured value, i.e. when
the container is empty, the MEASURED VALUE parameter does not display zero or the
desired value.
Example:
– MEASURED VALUE = 0.5 mbar (0.0075 psi)
– For the POS. INPUT VALUE parameter, specify the desired set point for the
MEASURED VALUE, e.g. 2.0 mbar (0.03 psi).
(The following applies: MEASURED VALUE
new
= POS. INPUT VALUE)
– MEASURED VALUE (after entry for POS. INPUT VALUE) = 2.0 mbar (0.03 psi)
– The CALIB. OFFSET parameter displays the resulting pressure difference (offset) by
which the MEASURED VALUE was corrected.
The following applies: CALIB. OFFSET = MEASURED VALUE
old
– POS. INPUT
VALUE,
here: CALIB. OFFSET = 0.5 mbar (0.0075 psi) – 2.0 mbar (0.03 psi) = – 1.5 mbar (-
0.0225 psi))
Prerequisite:
• This parameter is displayed for Cerabar S with absolute pressure sensors.
Factory setting:
0.0
EMPTY CALIB. (314)/(010)
Entry
Enter the level value for the lower calibration point (container empty).
The container is either empty or part full. By entering a value for this parameter, you are
assigning a level value to the pressure present at the device.
Prerequisite:
• LEVEL SELECTION = Level easy pressure (→ ä 135),
CALIBRATION MODE = Wet (→ ä 148)
• LEVEL SELECTION = Level standard (→ ä 135),
LEVEL MODE= Linear (→ ä 156),
CALIBRATION MODE = Wet (→ ä 161)
!
Note!
For this parameter, the local operation shows the level value to be entered and the
pressure present at the device. In order for the level value to be saved together with the
pressure present at the device, the entry field for the level value must first be activated
using the "+"- or "–" key before confirming with the "E" key. This applies also if the level
value is to remain unchanged.
Factory setting:
0.0
Table 4: QUICK SETUP "Level"
Parameter name Description
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