BEKA BA544D, Manual

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11
Display Description of function
'LOC.rSEt'Local reset of total display
When turned 'On' the total display
may be reset to zero from the
display mode by simultaneously
operating the
Up and Down push-
buttons for two seconds.
See section 5.13
'CLr. Gtot' Clear grand total
This function resets the grand
total to zero when 'CLr YES' is
selected. 'SurE' must be entered
to confirm the instruction.
Note : Once cleared, a grand total
can not be recovered.
See section 5.14
'COdE' Security code
Defines a four digit numeric code
which must be entered to gain
access to the programmable
functions. Default code 0000
disables the security function and
allows unrestricted access to all
programmable functions.
See section 5.15
5.4 Display update interval: ‘UpdAtE’
Six different intervals between display updates
varying between 0.5 and 20 seconds may be
selected. Increasing the interval between
display updates will significantly lengthen
battery life and make it easier to read a rapidly
changing rate or total display. The selected
update interval does not affect the accuracy of
the display, but it will affect the response time
of the optional alarms.
When any of the push-buttons are operated,
the update time automatically changes to 0.5
seconds for 30 seconds to provide the fastest
response while adjustments are being made.
To define the update interval select ‘UpdAtE’
from the main menu and press
P to reveal the
current time. Pressing the Up or Down button
will scroll through the six times. When the
required interval has been selected press
E to
return to the main menu.
5.5 Type of input: ‘InPut’
The BA544D may be programmed to accept
pulse inputs from a wide variety of sensors.
To define an input type select ‘InPut’ from the
menu and press
P which will reveal the current
input type. Pressing Up or Down will scroll
through the four options:
‘UOLts’ Voltage pulse input
Threshold 1V and 3V
10kHz max.
Input terminals 3 and 4
‘COIL’ Low voltage pulse
Threshold typically 40mV
peak to peak ac.10kHz max.
Input terminals 3 and 4
‘COntACt’ Switch contact
Threshold 100 and 1000
Ω
100Hz max.
Input terminals 5 and 6
‘OP.COL’ Open collector
Threshold 2 and 10k
Ω
10kHz max.
Input terminals 5 and 6
When the required type of input has been
selected press
E to return to the main menu.
Note: To count reliably, the input signal must
fall below the lower switching threshold and
rise above the higher switching threshold.
5.6 Position of the decimal points: ‘d.P.’
The rate display can have up to six digits and
the decimal point may be positioned between
any of them, or omitted. Similarly, the total
display has eight digits and the decimal point
may be positioned between any of them, or
may be omitted.
To adjust the position of either decimal point
select 'd.P.' from the main menu and press
P.
This will activate both displays with one digit
plus the following decimal point of the total
display flashing. If only the least significant
digit is flashing, this indicates that the decimal
point is omitted.
The position of the decimal point can be moved
by pressing the
Up or Down push-button.
Operating the P push-button will toggle control
between the two displays. When both decimal
points have been correctly positioned press
E
to return to the main menu.
If the application requires flow rate to be the
primary display i.e. shown on the large display,
the d.P. function enables the rate and total
displays to be interchanged. The rate display
will continue to have six digits but the total
display will be reduced from eight to six digits.
The rate and total annunciators will also be
exchanged. Pressing the
Up and Down