25
Display
selected
using the
&
or
*
buttons in
the tota-
lising mode.
Lower display
di5p-2
setting in
configuration menu.
5td
label
off
Composite
Composite
rate and total
shown
permanently
Composite
rate and total
shown
permanently
A
:
b
or
A
:
-b
shown
briefly.
No
numerical
value
Input-A
Numerical
value
alternating
with
in-A
shown briefly
every few
seconds
In-A
shown
continuously.
No
numerical
value
In-A
shown
briefly.
No
numerical
value
Input-b
Numerical
value
alternating
with
in-b
shown briefly
every few
seconds
In-b
shown
continuously.
No
numerical
value
In-b
shown
briefly.
No
numerical
value
6.12 Position of the decimal points:
dP
The upper and lower displays have eight and six
digits respectively. This function enables the
position of the decimal point on both displays to be
independently positioned.
To adjust the position of the decimal points select
dP
from the configuration menu and press
(
. The
upper display defined as the rate or total display by
function
di5P-1
(section 6.10) will be activated and
identified by the display annunciator as Rate or
Total. The decimal point, which may be positioned
between any of the digits or may be absent is
positioned by operating the
&
or
*
push button.
When the decimal point in the upper display has
been positioned pressing the
(
button will transfer
control to the lower display variable, but it will be
shown and annunciated on the larger upper display.
The decimal point may be positioned in the same
way by operating the
&
or
*
push buttons. When
set as required enter the settings and return to the
configuration menu by operating the
)
button.
6.13 Flowmeter K-factor:
FACtor-A
*
The rate totaliser pulse input A is divided by
FACtor-A
, which is adjustable between 0.0001 and
99999. For flow applications
FACtor-A
should be
set to the K-factor of the flowmeter connected to
input A. K-factor is the number of pulses that the
flowmeter produces per unit volume of flow
e.g. 20 pulses per litre.
FACtor-A
therefore
converts the flowmeter output into engineering units
ready for further scaling to produce the required rate
and total flow displays. See Fig 9.
When the 16 segment lineariser
Lin
is selected in
FunCtion
up to 16 values of
FACtor-A
may be
entered, each starting at a specified input pulse
frequency, which may be adjusted to compensate
for flowmeter non-linearity. See section 7 of this
manual.
To check or change the value, select
FACtor-A
from
the configuration menu and press
(
which will
reveal the existing value with one digit flashing.
The flashing digit may be adjusted by pressing the
&
or
*
button. When this digit has been adjusted,
pressing
(
will transfer control to the next digit.
When all the digits have been adjusted pressing
(
again will transfer control to the decimal point
that may be positioned between any of the digits, or
may be omitted by moving it to the right of the least
significant digit. Finally press
)
to return to the
FACtor-A
prompt in the configuration menu.
6.14 Total scale factor*:
S5CALE
.
t-A
5CALE
.
T-A
is a dividing factor adjustable between
0.0001 and 99999 that enables total flow to be
displayed in the required engineering units. e.g. if
the output from
FACtor-A
is one pulse per litre and
the total display is required in thousands of gallons,
5CALE
.
t-A
should be set to 4546.1 which is the
number of litres in 1,000 imperial gallons. The total
flow display is independent of the rate display.
To check or change the total scale factor select
5CALE
.
t-A
from the configuration menu and press
(
which will reveal the existing value with one digit
flashing. The value of the flashing digit may be
changed by pressing the
&
or
*
button. When this
digit has been adjusted as required, pressing
(
will
transfer control to the next digit. When all the digits
have been adjusted pressing again
(
will transfer
control to the decimal point that may be positioned
between any of the digits, or may be omitted by
moving it to the right of the least significant digit.
When the required total scale factor has been
entered, press
)
to return to the
5CALE
.
t-A
prompt
in the configuration menu.
