5.0 CONFIGURATION & CALIBRATION
The BA537E and BA538E Rate Totalisers are
configured and calibrated via four front panel push
buttons. All 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 5.3 of
this manual and each summary includes a reference
to more detailed information. The sixteen segment
lineariser is described separately in section 6.
Configuration of the isolated pulse output, which is
fitted to all BA538E Rate Totalisers but is an option on
the BA537E, and the optional alarms and 4/20mA
output are described separately in section 9. When
fitted they appear as additional functions within the
configuration menu.
All new Rate Totalisers are supplied calibrated as
requested at the time of ordering. If calibration is not
requested,
Rate
Totalisers
will
have
default
configuration as shown in the following table, but can
easily be re-configured on-site.
Function
Display Default
Access code
CodE
0000
Function
FunCtion
5td
Input
inP
.
tYPE
oP
.
CoL
Debounce
dEbounCE
dEFAuLt
Update
uPdAtE
0
.
5
Upper display
di5p-1
totAL
Lower display
di5P-2
on
Decimal point
dP
Rate
0.0
Total
0
K Factor
FACtor
1
.
0
Total scale factor
5CALE
.
t
1
.
0
Rate scale factor
5CALE
.
r
1
.
0
Timebase
t-bA5E
5EC
Filter
FiLter
24
Clip-off
CLP-oFF
0
Local total reset
t-rE5Et
oFF
Local grand total reset
Gt-rE5Et
oFF
Security code
CodE
0000
Note:
While the instrument is being configured
totalisation continues so that any flow occurring during
this time is recorded.
5.1 Configuration structure
Fig 6 shows the BA537E and BA538E calibration
structure. The rate and total display calibrations are
independent which allows the displays to have
different engineering units.
The rate totaliser pulse input is divided by FACtor
which is usually set to the K-factor of the flowmeter,
thus converting the flowmeter output into engineering
units. When the 16 segment lineariser
Lin
is selected
in the Function sub-menu, up to 16 values for
FACtor
may be entered each at a specified input pulse
frequency to compensate for flowmeter nonlinearity.
See section 6.
5CALE-r
is a dividing factor that converts the output
from
FACtor
into the required rate display in
engineering units. e.g. if the output from
FACtor
is
one pulse per litre and the rate display is required in
gallons,
5CALE-r
should be set to
4 . 5461
which is
the number of litres in an imperial gallon.
The timebase
t-bA5E
is a multiplying factor that
determines if the instrument displays flow per
second, per minute or per hour.
The total flow display is independent of the rate
display.
5CALE-t
is a dividing factor that converts
the output from
FACtor
into the required total display
engineering units. e.g. if the output from
FACtor
is
one pulse per litre and the total display is required in
thousands of gallons,
5CALE-t
should be set to
4,546
.
1
which is the number of litres in 1,000
imperial gallons.
The BA537E and the BA538E uses ‘real’ decimal
points. Moving the position of a decimal point in a
scale factor will affect the instrument calibration.
Fig 6 Calibration structure
9
