For example, if a BA354NE is displaying rate in litres
per minute, setting '5CALE-t' to 4.5461 produces a
total display in UK gallons. Alternatively, setting
'5CALE-t' to 4546.1 will produce a total display in
thousands of UK gallons.
The total is calculated and the display updated once
per second, which defines the resolution of the total
flow display. When total alarms are used for
batching applications, this resolution may define the
accuracy of the system.
6.2 Accessing the configuration and
calibrations functions.
Throughout this manual push buttons are shown as
P
,
E
,
▼
or
▲
, and legends displayed by the Rate
Totaliser are shown within inverted commas e.g.
'CAL' and ' ALr2'.
Access to the configuration menu is obtained by
operating the
P
and
E
push buttons simultaneously.
If the Rate Totaliser’s 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 Rate
Totaliser will display 'CodE'. Pressing the
P
button
will clear this prompt allowing each digit of the code
to be entered using the
▲
and
▼
push buttons and
the
P
button to move control to the next digit. When
the correct four digit code has been entered
pressing
E
will cause the first parameter 'FunC' to be
displayed. If the code is incorrect, or a button is not
pressed within twenty seconds, the Rate Totaliser
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 Rate Totaliser will display ‘dAtA’ followed by
‘SAVE’ while the new information is stored in non-
volatile memory.
All new Rate Totalisers are supplied calibrated as
requested at the time of ordering. If calibration is not
requested, Rate Totalisers will be supplied with the
following default configuration:
Default Configuration
Access code ‘CodE’
0000
Function ‘FunC’
‘5td’ Linear
Rate display at 4mA ‘Zero’
0.00
Rate display at 20mA ‘5PAn’
100.00
Resolution ‘rE5n’
1 digit
P
button in display mode ‘C—P’
%
Local reset of total ‘t-rE5Et’
off
Local reset of grand total ‘Gt-rE5Et’ off
Clip off ‘CLIP oFF’
000.00
Timebase ‘t-bA5E’
1
Total scale factor ‘5CALE-t’
1.00
Upper display ‘di5P-1’
Total
Update time ‘uPdAtE’
1
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