BEKA BA384E, Manual

Page: 39 / 68

39
Using the
&
or
*
button select
dEbouncE
from the sub-menu and press
(
. Using the
&
or
*
button select
dEFAuLt
which will provide moderate
noise protection. If the Rate Totaliser is
subsequently found to miscount the
noise rejection can be increased. Enter
the selection and return to the
inPut-A
prompt in the configuration menu by
pressing the
)
button twice.
As both flowmeters are the same repeat
for input b using the
inPut-b
function.
See 6.6 and 6.7
Step 4 Select the interval between display
updates.
Using the
&
or
*
button select
uPdAtE
in the configuration menu and press
(
to reveal how frequently the Rate
Totaliser display is updated. Using the
&
or
*
push button select
0 . 5
(0.5
seconds i.e. 2 display updates per
second). Enter the selection and return
to the
uPdAtE
prompt in the configuration
menu by pressing the
)
button.
See 6.8
Step 5 Count
Using the
&
or
*
button select
Count
in the configuration menu and press
(
to reveal the existing arithmetic
relationship between input A and input b.
In this example the Rate Totaliser is
required to display the sum of the two
inputs, therefore using the
&
or
*
push button select
A : b
. Enter the
selection and return to the
Count
prompt
in the configuration menu by pressing the
)
button.
See 6.9
Step 6 Upper display
Using the
&
or
*
button select
di5P-1
in the configuration menu and press
(
to select whether flow rate or flow
total is shown on the upper 8 digit
display. The required maximum total of
100000 with 0.01 resolution can only be
accommodated on the top eight digit
display. Using the
&
or
*
button select
totAL
and press
)
to enter the
selection and return to the
di5P-1
prompt in the configuration menu.
See 6.10
Step 7 Lower display
Using the
&
or
*
button select
di5P-2
in the configuration menu and press
(
to select if the lower display function.
The Rate Totaliser is required to display
both total flow and the rate of flow so the
lower display is required. Using the
&
or
*
button select
5td
and press
)
to
enter the selection and return to the
di5P-2
prompt in the configuration
menu.
See 6.11
Step 8 Position rate & total decimal points
Select
dP
from the configuration menu
and press
(
. The upper display
already defined as the total display by
function
di5P-1
will be activated and
identified by the Total annunciator. Using
the
&
or
*
push button position the
decimal point in front of the second least
significant digit to give a total display
resolution of 0.00.
Pressing the
(
button will show the rate
display, but in the upper display position
with the Rate annunciator activated.
Using the
&
or
*
push button position
the decimal point to the right of the least
significant digit so that it is not visible to
give a total display resolution of 1.
Finally press the
)
button to enter the
selections and return to the
dP
prompt in
the configuration menu.
See 6.12
Step 9 Enter the flowmeter K-factor
K-factor is the number of pulses that a
flowmeter produces per unit volume of
flow. The Rate Totaliser pulse input A is
divided by
FACtor-A
, which is adjustable
between 0.0001 and 99999; when set to
the K-factor of the flowmeter it converts
the flowmeter output into engineering
units ready for further scaling to produce
the required rate and total flow displays
Using the
&
or
*
push button select
FACtor-A
from the configuration menu
and press
(
to show the existing value
with one digit flashing. This should be
changed to
105
using the
&
and
*
push buttons to adjust the flashing digit
and the
(
button to transfer control to
the next digit and to position the decimal
point.