31
Increasing the number of segments will provide a
more accurate approximation of the flowmeter
characteristic and increase totalisation accuracy.
Note:
The pulse input frequency,
PuL5E fr
, of
successive breakpoints must be monotonic
i.e. the pulse input frequency must increase
with breakpoint number. See 7.8
Display
Summary of function
CoPY A2b
Copy A lineariser configuration to
b lineariser.
When the
(
push button is pressed
the configuration of the A input
lineariser is copied to the b input
configuration lineariser.
See section 7.3
Add
Add a segment
Adds a new segment before the
displayed segment. The calibration of
existing segments is not changed, but
the identification number of all
subsequent segments is increased by
one.
See section 7.4
dEL
Remove a segment
Removes the displayed segment, the
identification number of all subsequent
segments is decreased by one.
See section 7.5
PuL5E Fr
Pulse input frequency
Defines the input frequency in Hz at
which the selected lineariser segments
starts.
See section 7.6
L_FACtor
Flowmeter K-factor
The rate totaliser pulse input is divided
by
L_FACtor
, which is usually set to the
K-factor of the flowmeter, thus
converting the flowmeter output into
engineering units.
L_FACtor
may be
adjusted between 0.0001 and 99999.
Up to 16 values for
L_FACtor
may be
entered, each at a specified input pulse
frequency.
See section 7.7
Note:
The following detailed description of the
lineariser configuration functions refer to the
input A lineariser. The Input b lineariser has
separate identical functions.
7.3 Copy A lineariser configuration
to b lineariser:
Copy A2b
When both inputs of the BA384NG Rate Totaliser
are connected to separate flowmeters with the same
non-linearity, this sub-function simplifies
configuration by copying input A lineariser
configuration to the input b lineariser so that the
information only has to be entered once.
Select
FACtor-A
in the configuration menu and
press
(
, which will reveal one of five sub-functions.
If
Copy A2b
is not displayed, repeatedly press the
&
or
*
button to select
Copy A2b
. Pressing the
(
button will initiate the copy, when complete the
instrument will display
CoPiEd
followed by the
Copy A2b
prompt from which another sub-function
may be selected, or pressing the
)
button will the
return the instrument to the configuration menu.
7.4 Add a segment:
Add
Add
is a sub-function in the
FACtor-A
function that
enables a straight-line segment to be added to the
lineariser at any point. Select
FACtor-A
in the
configuration menu and press
(
, which will reveal
one of five sub-functions. If
Add
is not displayed,
repeatedly press the
&
or
*
button to select
Add
followed by
(
which will display the current
segment and the total number of segments as
shown below:
Each time the
(
push button is operated a
segment will be added to the lineariser. If
configuring the lineariser for the first time, repeatedly
press
(
until the required total number of segments
is shown on the right hand side of the display. Any
number between 1 and 16 may be selected.
If adding an additional segment to an already
configured lineariser, the insertion position, which is
shown on the left hand side of the display, can be
selected using the
&
or
*
push button. When
inserting an additional segment, the identification
numbers of all segments equal to and above the
insertion point are increased by one.
An additional segment may be placed below
segment 0:n providing the frequency at which
segment 0:n starts is greater than zero.
To return to the
Add
prompt in the
FACtor-A
sub-
menu press
)
.
