ba526c0 pages

BA526C
N
fast
resp EW
onse
barg
raph

Power supply for
optional separately
powered backlight

2-wire 4/20mA
analogue &
digital indicator
General purpose

Optional
alarm
outputs

2-wire
Tx
4/20mA

Shown with optional separately powered backlight

The BA526C is a new combined
analogue and digital indicator which
replaces the BA526. It offers enhanced
features and improved visibility in a
shorter enclosure. Like its predecessor,
the BA526C displays the current flowing
in a 4/20mA loop on a 100 segment
bargraph and in accurate engineering
units on a digital display. The instrument
is loop powered but only introduces a 1V
drop allowing it to be installed in series
with almost any 4/20mA loop.
Main application of the BA526C is to
display a measured variable or control
signal in a process area. For level and
similar measurements the combination
of an analogue and digital display
provides magnitude and trend information from the bargraph, plus accurate
readings in engineering units from the
digital display. The relative magnitude of
variables can be effectively presented by
mounting BA526C indicators side by
side. An optional 16 point lineariser
enables the BA526C to display non
linear variables in linear engineering
units.
Control and calibration of the
combined indicator is performed via the
front panel tactile push-buttons. Using
these buttons the operator can temporarily display the measured variable
as a percentage of span, the input
current in mA and the numerical display
at 4 and 20mA input. All the
calibration functions are contained in
easy to understand menus which may
be protected by a four digit user
selectable security code.
The analogue bargraph which contains
100 segments, provides a rapid indication of the input current, enabling an
operator to quickly assess the magnitude and trend of a process variable.

The bargraph displays zero to full scale
for a 4 to 20mA input, but may be calibrated to show deviation from any input
current. Either a column or a single
segment display may be selected and if
only the analogue display is required,
the digital display may be disabled.
Separately powered backlighting is
available as an option. The orange
output enhances daylight contrast and
enables the display to be read when the
instrument is installed in a poorly illuminated area.
Optional alarms provide two galvanically isolated solid state outputs which
may be independently programmed for
high or low operation with a normally
open or closed output. For easy comparison with the 4/20mA input, both
setpoints are displayed on a second
bargraph together with annunciators
showing the status of both alarms.

N

Loop powered
only 1.1V drop

N

4/20mA
circuit

Optimum visibility

N

100 segment bargraph
plus digital display

N

Optional:
Display backlight
Alarms
Lineariser

N

144 x 48mm DIN
enclosure with
IP65 front

N

3 year guarantee

The IP65 front panel is a robust, easy
to clean Noryl moulding surrounding an
armoured glass window. A captive
neoprene gasket provides a seal
between the instrument enclosure and
the panel.
Reliability is ensured by an ISO9001
approved quality control system
supported by a three year guarantee.
The BA526C is protected from reverse
connection and overrange input
currents, and incorporates extensive
radio frequency filtering to comply with
the European EMC Directive.
If flammable atmospheres are present
the BA326C should be used. This has
the same features as the BA526C and
has been certified intrinsically safe in
both Europe and the USA.

BEKA associates Ltd. Old Charlton Rd.
Hitchin, Hertfordshire, SG5 2DA, U.K.
Tel. (01462) 438301 Fax (01462) 453971
e-mail sales@beka.co.uk www.beka.co.uk