Barcon LHC/PPC (HART)
Commissioning
D
a
te of Is
s
u
e
2
5.10.2001
27
Lower and upper
range value: calibration
without reference
pressure
The pressure required for zero point and span is calibrated using the handheld terminal
without entering a reference pressure.
Lower and upper
range value: calibration
with reference pressure
A reference pressure is available that corresponds exactly to the zero point and span
required.
Bias adjustment
If the display does not show zero after zero point adjustment (due to position), then this
can be corrected to zero by entering a bias pressure or by adopting the bias pressure
acting (depending on position).
4 mA level (current
output min. 4 mA)
The current signal is set to 3.8 mA … 20.5 mA as standard when operating correctly.
Selecting the 4 mA level, ensures that a minimum current signal does not fall below
4 mA.
#
Para.
Moving through
the menus
Entry
Main group: Basic setting
1
Entering known pressure for zero point
V0H1
½
Setting 4 mA
e. g. 0 psi Enter
2
Entering known pressure for span
V0H2
½
Setting 20 mA
e. g. 14.5 psi
Enter
+
–
1
2
+
–
3
Zero
Damping
on
Span
Display
off
I
O
Enter zero point
and measuring span
No reference
pressure
#
Para.
Moving through
the menus
Entry
Main group: Basic settings
1
Adopting the acting pressure for the zero
point
V0H3
½
Confirming 4 mA
automatically
e. g. 0 psi
Enter
2
Adopting the acting pressure for the span
V0H4
½
Confirming 20 mA
automatically
e. g. 14.5 psi
Enter
+
–
1
2
+
–
3
Zero
Damping
on
Span
Display
off
I
O
Confirm zero point
and measuring span
Reference
pressure
#
Para.
Moving through
the menus
Entry
Main group: Basic setting
1
Setting the display to zero by entering a
known bias pressure (pressure dependent on
position).
V0H5
½
Setting bias
pressure
e. g. 5 psi Enter
alternatively
2
Setting the display to zero
A bias pressure acting (pressure dependent
on position) is adopted as zero pressure.
V0H6
½
Confirming
bias pressure
automatically
Enter
p
p
Bias
p+pBias
pe=0
#
Para.
Moving through
the menus
Entry
Main group: Sensor data
1
V7H3
½
Off Current
output min.
4 mA
e. g. On Enter
