BEKA BA534D, Manual

Page: 15 / 26

15
During commissioning it is recommend
that initially the second digit of the rate
parameters is set to 0 (step response
off) and the first digit (amount of
filtering) is adjusted to provide
acceptable rate display stability. The
second digit should them be increased
until acceptable rate display stability is
once again achieved.
To adjust the filter parameters select
‘FILtEr’ from the main menu and press
P to reveal the current setting. The
first digit will be flashing and may be
adjusted using the
Up or Down button.
The P button will transfer control to the
second digit. When both are set as
required, return to the ‘FILtEr’ prompt
in the main menu by pressing
E .
Note: While adjusting the filter, the rate is
shown on the lower display so that
stability can be assessed.
Step 8 Enter the total scaling factor
The K factor of the flowmeter in this
example is 1050.0 pulses per litre and
the total display is required in cubic
metres.
There are 1000 litres in a cubic metre
so the BA534D is required to display 1
cubic metre for every 1,050 x 1,000
pulses received. ‘SCALE-t’ should
therefore be set to 1,050,000
Select ‘SCALE-t’ from the main menu
and press
P which will reveal the
current setting with one digit flashing.
To position the decimal point, operate
the
P push-button to move the flashing
digit to the least significant position.
Pressing the
Up and Down buttons
simultaneously will then remove the
decimal point.
Using the Up and Down buttons to
adjust each digit in turn and the P
button to transfer control between
digits, enter 1050000 Finally return to
the 'SCALE-t' prompt in the main menu
by pressing
E .
Step 9 Define clip-off
In this example totalisation is to be
inhibited at flow rates below 300 litres
per hour.
Select ‘CLIP-OFF’ from the main menu
and press
P which will reveal the clip-
off threshold in litres per hour i.e. the
same units already selected for the
rate display. The most significant digit
of the display will be flashing,
indicating that this digit may be
adjusted. Pressing
P five times will
move the flashing digit to the third
lease significant digit.
Using the Up and Down buttons set
the third least significant digit to 3 i.e.
a clip-off threshold of 300. Finally
return to the 'CLIP-OFF' prompt in the
main menu by pressing
E .
Step 10 Turn local reset on
In this example the operator needs to
reset the total display to zero by
pressing the
Up and Down buttons
simultaneously. To activate the local
reset function select ‘LOC.rSEt’ from
the main menu and press
P to display
the current setting. Pressing the Up or
Down button will toggle the display
between ‘On’ and ‘OFF’. Select ‘On’
and press
E to return to the ‘LOCrSEt’
prompt in the main menu.
Step 11 Reset the grand total to zero
Before completing commissioning the
grand total counter should be reset to
zero. Select 'CLr. Gtot' from the main
menu and press
P which will cause the
instrument to display 'Clr. no'. Toggle
this to 'CLr. YES' using the
Up or
Down push-buttons and press P which
will result in a '0000' prompt. Using the
Up , and Down buttons and the P
button to move to the next digit,
confirm the request by entering the
password 'SurE'. 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 main menu.