Endress+Hauser Cerabar S PMC 731, Руководство по эксплуатации

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Lower and upper
range-values:
calibration without
reference pressure The required pressure for lower and upper range-value is set by remote communication.
# Matrix Path through the
menus
Entry
Main group: Basic settings
1 Enter known pressure for lower range-value
V0H1
➤
Sets 4 mA e.g. 1 bar
Confirm
2 Enter known pressure for upper range-value
V0H2
➤
Sets 20 mA e.g. 2 bar
Confirm
Lower and upper
range-values:
calibration with
reference pressure A reference pressure is available that corresponds exactly to the required lower range-
value and the upper range-value.
# Matrix Path through the
menus
Entry
Main group: Basic settings
1 Acting pressure is taken for lower range-value
V0H3
➤
Sets 4 mA
automatically
Confirm
2 Acting pressure is taken for upper range-value
V0H4
➤
Sets 20 mA
automatically
Confirm
Position calibration
– display only
(bias pressure)
If the display does not show zero after zero point adjustment (due to mounting position),
then you can correct the display value to zero by entering a bias pressure or by adopting
the bias pressure acting (depending on mounting position). The position calibration using
a bias pressure does not affect the current output.
# Matrix Path through the
menus
Entry
Main group: Basic settings
1 Set display to zero
A bias pressure acting (position-dependent
pressure) is adopted as zero pressure.
V0H6
➤
Sets
bias pressure
automatically
Confirm
Alternatively
2 Set display to zero by entering a known bias
pressure (position-dependent pressure).
V0H5
➤
Sets bias
pressure e.g. 20 mbar
Confirm
0...2 bar g
p
p
Bias
p+pBias
pe=0
BA187Y72
5 Pressure Measurement Cerabar S
26 Hauser