Description of parameters
Cerabar S/Deltabar S/Deltapilot S 4...20mA HART
54
Hauser
POS. ZERO ADJUST (685)
Entry
Position adjustment – the pressure difference between zero (set point) and the measured
pressure need not be known.
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.
Selection:
• 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).
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).
(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.
Factory setting:
0.0
CALIB. OFFSET (319)
Entry
Position adjustment - the pressure difference between zero (set point) and the measured
pressure is known.
Example:
– MEASURED VALUE = 2.2 mbar (0.033 psi)
– Via the CALIB. OFFSET parameter, enter the value by which the MEASURED VALUE
should be corrected. To correct the MEASURED VALUE to 0.0 mbar, you must enter
the value 2.2 here.
(MEASURED VALUE
new
= MEASURED VALUE
old
– CALIB. OFFSET)
– MEASURED VALUE (after entry for calib. offset) = 0.0 mbar
– The current value is also corrected.
Factory setting:
0.0
Table 6: (GROUP SELECTION
)
OPERATING MENU
SETTINGS
POSITION ADJUSTMENT
Parameter name
Description