10
6.
CONFIGURATION AND CALIBRATION
All the models are configured and calibrated via
the four front panel push buttons.
The
configuration functions are contained in an easy to
use intuitive menu that is shown diagrammatically
in Fig 7.
Each menu function is summarised in section 6.1
and includes a reference to more detailed
information.
When the indicator is fitted with
alarms additional functions are added to the menu
which are described in section 9.3
Throughout this manual push buttons are shown
as
(
,
)
,
&
or
*
, and legends are shown in a
seven segment font exactly as displayed by the
indicator e.g.
CAL
and
ALr2
.
Access to the configuration menu is obtained by
operating
the
(
and
)
push
buttons
simultaneously. If the indicator security code is set
to the default
0000
the first parameter
FunC
will be
displayed. If a security code other than the default
code
0000
has already been entered, the indicator
will display
CodE
. Pressing the
(
button will clear
this prompt allowing each digit of the code to be
entered using the
&
and
*
push buttons and the
(
button to move control to the next digit. When
the correct four digit code has been entered
pressing
)
will cause the first parameter
FunC
to
be displayed. If the code is incorrect, or a button
is not pressed within twenty seconds, the indicator
will automatically return to the display mode.
Once within the configuration menu the required
parameter can be reached by scrolling through the
menu using the
&
and
*
push buttons as shown
in Fig 7.
When returning to the display mode
following recalibration or a change to any function,
the indicator will display
dAtA
followed by
5AVE
while the new information is stored in permanent
memory.
All new indicators are supplied calibrated as
requested at the time of ordering. If calibration is
not requested, indicators will be supplied with the
following default configuration:
Default Configuration
BA304G BA324G
BA304G-SS BA324G-SS
Access code
CodE
0000
0000
Function
FunC
Linear
Linear
Display at 4mA
2ero
0.0
0.00
Display at 20mA
5PAn
100.0
100.00
Resolution
rE5n
1 digit
1 digit
Bargraph start
BarLo
-----
0.00
Bargraph finish
BarHi
-----
100.00
(
button in display mode
C--P
%
%
Tare
tArE
Off
Off
6.1
Summary of configuration functions
This section summarises each of the main
configuration functions and includes a cross
reference to a more detailed description. Fig 7
illustrates the location of each function within the
configuration menu.
The lineariser and the
optional factory fitted alarms are described
separately in sections 7 and 9.3 of this manual.
Display
Summary of function
FunC
Indicator function
Defines the relationship between the
4/20mA input current and the indicator
display. May be set to:
5td
Standard linear relationship
root
Square root extraction
Lin
16 segment adjustable
lineariser – see section 7.
See section 6.2
rE5n
Display resolution
Defines the resolution of the least
significant display digit. May be set to
1
,
2
,
5
or
10
digits.
See section 6.3
dP
Decimal point
Positions
a
dummy
decimal
point
between any of the digits or turns it off.
See section 6.4
CAL
Calibration of the digital display using
an external current source.
Enables the zero and span of the
indicator to be adjusted using an external
current source such as a calibrator.
When used with an accurate traceable
current source this is the preferred
method of calibration.
See section 6.5
5Et
Calibration of display using internal
references.
Enables the zero and span of the
indicator to be adjusted without the need
for
an
accurate
input
current
or
disconnection from the 4/20mA loop. See
section 6.6
bAr
Bargraph format and calibration
Only the BA324G & BA324G-SS have a
bargraph.
The bargraph may be conditioned to start
from left, right or centre of the display, or
it may be disabled.
When optional
alarms are fitted it can also display both
alarm setpoints and the measured value.
The bargraph may be calibrated to start
and finish at any value within the
indicator’s calibrated digital display.
See section 6.7
