BEKA BA458C, Manual

Page: 17 / 45

17
6.4 SYSTEM SETTINGS
See Fig 11.
6.4.1 Language
The BA458C can display operating messages
and menus in three different languages:
Deutsch
English
Francais
Set Language
Highlight the required language and press E to
enter the selection.
6.4.2 User Control
The BA458C batch controller may be
controlled by the front panel pushbuttons, by
remote switches or by both the front panel
switches and the remote switches.
Local
Remote
Both
Set user Controls
Highlight the required option and press E to
enter the selection.
6.4.3 Signal Input
A wide variety of analogue and digital
transduces and sources may be connected to
the batch controller.
Open Collector
Prox Detector
Switch Contact
Magnetic pickup
Voltage Pulse
4/20mA
4/20mA Sq. Law
Set Input Type
Notes: Input terminals vary depending upon
the type of input, see sections 4.2.2
and 4.2.3.
The brilliance of the display backlight
is reduced when open collector,
proximity detector or switch contact
inputs are selected.
6.4.4 4mA Calibration
Note:
Only necessary when 4/20mA input is
used
When the BA458C batch controller is supplied
the analogue current input will have been
accurately factory calibrated, it is only
necessary to perform this calibration as part of
routine maintenance.
To perform the calibration connect a 4 to 20mA
current source to batch controller terminals 16
& 17(+) and adjust the input current to exactly
4mA. To achieve maximum batch controller
performance, the accuracy of the current
source should be greater than
±
0.025% (4uA).
To prevent the batch controller calibration
being accidentally corrupted the instruction has
to be confirmed before it will be executed.
Calibrate
Cancel
CAL. (Inject 4mA)
Highlight the ‘Calibrate’ option and operate the
E pushbutton, which will result in the
confirmation screen being displayed. To
perform the calibration highlight ‘Continue’ and
press E , after a few seconds the display will
return to the System setting menu.
Continue
Cancel
Are you sure?
6.4.5 20mA Calibration
This function is identical to the 4mA calibration
described in the previous section 6.4.4, but a
20mA input current should be used.
6.4.6 Lineariser ( Pulse inputs)
The 16 point straight line lineariser will
compensate for k-factor non-linearity in turbine
flowmeters.
This function turns the lineariser on and off,
calibration parameters are entered in the Batch
Setting menu – See sections 6.5.1 and 6.5.2 .
On
Off
Set Lineariser
Highlight the required setting and press E to
enter the selection.