BEKA BA538C, Manual

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10
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
more than two seconds.
See section 5.13
'CLr. Gtot' Clears grand total
This function resets the grand total to
zero when 'CLr YES' is selected, and
'SurE' is 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 5 seconds may be
selected. If either the rate or the total displays
are likely to change rapidly, a longer interval
between updates may simplify reading the
instrument display. The selected update interval
does not affect the update time of any other
instrument function such as the optional 4/20mA
output.
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 BA538C 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 five
options:
‘UOLts’ Voltage pulse input
Threshold 1V and 3V
5kHz max.
Input terminals 3 and 4
‘COIL’ Low voltage pulse
Threshold 20mV
peak 5kHz max.
Input terminals 3 and 4
‘Pr.dEt’ NAMUR proximity detector
Threshold 1.2 and 2.1mA
5kHz max.
Input terminals 5 and 6
‘COntACt’ Switch contact
Threshold 100 and 1000

100Hz max
Input terminals 5 and 6
‘OP.COL’ Open collector
Threshold 2k

and 10k

5kHz 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 correctly, 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