Barcon LHC/PPC (HART)
Operation
22
D
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te of Is
s
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e
25.10.2001
3.2
Function of the display
The digital display has two types of display:
•
Display in measurement mode: This is shown as standard
•
Display in calibration mode: This is shown after pressing the Zero or Span
key once. It returns automatically to measurement mode after 2 seconds
Fig. 3.2: Function of the display
3.3
Position and function of the operating elements on the electronic insert
Position of the
operating elements
Fig. 3.3: Position of the operating elements
Function of the
Operating Elements
Display in measurement mode
Additional displays incalibration mode
4-character display of measured values and
input parameters
ó
bargraph of measured value
ì
lower range value
ö
upper range value
ú
nominal measuring range
÷
Display of the calibration point
(Z=Zero or S=Span)
ø
sets measuring range within the limits of the
measuring cel
0 bar … 1 bar
0,753
0,753
0,250
Z
S
Display in measurement mode
ó
ì
ö
ú
Display in calibration mode
÷
ø
1
2
+
–
3
Zero
Damping
on
off
Span
Display
Damping switch
ó
Key for zero point
calibration
ì
Key for measuring span
calibration
Connection terminals for
measuring the signal current
No.
Operating element
Function
Damping switch
Switch position "
off"
: Damping 0 s
Switch position "
on"
: Damping 2 s.
This switch position also enables any damping to be entered between
0 s ... 40 s by remote communication e.g. with the handheld terminal.
ó
Key for calibrating the zero
point
press once
: The acting pressure for the zero point is shown
press twice
: The acting pressure for the zero point is adopted
ì
Key for calibrating the
measuring span
press once
: The acting pressure for the measuring span is shown
press twice
: The acting pressure for the measuring span is adopted
Key for calibrating the zero
point and key for
calibrating the measuring
point
press once simultaneously
: The acting pressure is shown as the
bias pressure
press twice simultaneously
: The acting pressure is adopted as the
bias pressure