Description of parameters
Cerabar S/Deltabar S/Deltapilot S 4...20mA HART
48
Hauser
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. for
example, when the container is empty or partly filled, 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 current value is also corrected.
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 sensor 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. for
example, when the container is empty or partly filled, 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 mbar.
(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.
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))
– The current value is also corrected.
Prerequisite:
• This parameter is displayed for Cerabar S with absolute pressure sensors.
Factory setting:
0.0
SET LRV (245)
Entry
Set lower range value – without reference pressure.
Enter pressure value for the lower current value (4 mA).
Factory setting:
0.0 or as per order specifications
SET URV (246)
Entry
Set upper range value – without reference pressure.
Enter pressure value for the upper current value (20 mA).
Factory setting:
High sensor limit (
see PRESS. SENS HILIM, Page 119) or as per order specifications
DAMPING VALUE (247)
Entry
Enter damping time (time constant
).
The damping affects the speed at which all subsequent elements, such as the on-site
display, measured value and current output react to a change in the pressure.
Input range:
0.0...999.0 s
Factory setting:
2.0 s or as per order specifications
Table 3: (GROUP SELECTION
) QUICK SETUP "Pressure"
Parameter name
Description
