Step 13 Reset the grand total to zero
To reset the grand total to zero select
'CLr.Gtot' from the configuration menu
and press
P
which will cause the
instrument to display 'Clr.no'. Toggle
this to 'CLr.YES' using the
▼
or
▲
push button and press
P
which will
result in a '0000' prompt. Using the
▼
,
and
▲
buttons and the
P
button to
move control to the next digit, confirm
the request by entering the password
'5urE'. Note: S is entered as 5.
Pressing
E
will then reset the grand
total counter to zero and return the
instrument to the 'CLr.Gtot' prompt in
the configuration menu.
Step 14 Enter security code
The example requires that access to
the Rate Totaliser configuration menu
is protected by the security code 1209.
To enter this code select ‘CodE’ from
the configuration menu and press
P
which will reveal the existing security
code with one flashing digit. Using the
▼
and
▲
push buttons and the P
button to transfer control between digits
set the code to 1209 and then press E
to enter the code and return to ‘CodE’
prompt in the configuration menu.
Step 15 Return to the Rate Totaliser
operating mode.
Configuration is now complete, return
to the Rate Totaliser operating mode by
pressing the
E
button.
7.2 Using the internal reference
This example explains how to calibrate a BA554E
Rate Totaliser using the instruments internal
reference which means that it does not have to be
disconnected from the measuring loop and no test
equipment is required.
As in the previous example the BA554E Rate
Totaliser is connected to a flowmeter having a
linear output of 20mA at a flow of 1100 litres /
minute. The BA554E is required to display flow in
litres per minute with maximum resolution and total
flow in cubic metres with a resolution of 0.1 cubic
metres. Total is to be shown on the upper large
display and rate on the lower smaller display.
Totalisation is to occur for flow rates between 1
and 100% of maximum flow. A security code of
1209 is required. In the operating mode the
BA554E is required to display the input current as
a percentage of span when the
P
push-button is
operated and operating the
▼
and
▲
buttons
simultaneously to reset the total display to zero.
All the configuration steps are identical to those in
the previous example except for steps 1 and 8.
Step 1
Leave the BA554E in measurement
loop.
It is not necessary to remove the
BA554E Rate Totaliser from the
measurement loop to reconfigure it
using the instruments internal
references. Throughout the procedure
the loop current must be between 4 and
20mA.
Step 8
Calibrate the rate display
Select calibration of the rate display
using the internal reference ‘5Et’ from
the configuration menu and press
P
.
The BA554E will display ‘Zero’,
pressing
P
again will reveal the
calibrated rate display at 4mA input
with one digit flashing. The
▼
and
▲
push buttons will adjust the flashing
digit and the
P
push button will transfer
control to the next digit. Enter 0000.0
and then press
E
to return to the 'ZEro'
prompt.
Press the
▲
button to access the
‘SPAn’ prompt and press
P
which will
reveal the calibrated rate display at
20mA with one digit flashing. The
▼
and
▲
push buttons will adjust the
flashing digit and the
P
push button will
transfer control to the next digit. Enter
1100.0 and then press
E
to return to
the '5PAn' prompt. Finally, press
E
again to enter the new rate calibration
and return to the ‘5et’ prompt in the
configuration menu.
Step 9
Return to the Rate Totaliser
operating mode.
Configuration is now complete, return
to the Rate Totaliser operating mode by
pressing the
E
button.
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