BA307E 2-wire 4/20mA 4 digit indicator u

BA307E 2-wire 4/20mA 4 digit indicator u
Hazardous area
BA307E
Safe area
2-wire 4/20mA
4 digit indicator
Intrinsically safe for use in all
gas & dust hazardous areas
u Loop powered only 1.2V drop.
Zener barriers or
galvanic isolators
2-wire
Tx
u 4 digit 15mm high 4/20mA
circuit
4/20mA
u Intrinsically safe
Shown with optional backlight - loop powered
The BA307E loop powered 4/20mA
indicator is a fourth generation instrument
that is electrically and mechanically
compatible with the earlier industry standard
BA307C, but has a much larger full 4 digit
display providing maximum visibility from a
96 x 48mm instrument. The new model has
guaranteed performance between -40 &
70°C, dust certification and an even shorter
enclosure depth than its predecessor. The
scale card can easily be marked to show the
units of measurement and be installed on-site
without dismantling the indicator enclosure or
removing it from the panel. If the units of
measurement are not specified when the
indicator is ordered, a blank scale card will be
fitted.
The main application of the BA307E is to
display a measured variable in meaningful
engineering units within a hazardous area.
The zero and span of the display are
independently adjustable allowing the
indicator to be calibrated to display any linear
variable represented by the 4/20mA signal. A
root extractor and an adjustable sixteen
segment lineariser enables the indicator to
display flow and non-linear variables such as
tank level in linear e n g i n e e r i n g u n i t s .
F o r w e i g h i n g applications a tare function
is included.
A bold 15mm high 4 digit display provides
maximum contrast and has a very wide
viewing angle, allowing the BA307E indicator
to be read easily in most lighting conditions
over a wide temperature range. An optional
factory fitted backlight is available for
applications in poorly illuminated areas. The
four digits, with three decimal points and a
negative sign, may be configured to display
any variable between -9999 and 9999.
IP66 front panel protection and a neoprene
gasket to seal the joint between the indicator
and the panel make the instrument suitable
for use in areas that will be cleaned with a
hose. To simplify installation and
maintenance, the indicator has a removable
terminal block allowing panel wiring to be
completed before the BA307E indicator is
installed.
display.
International intrinsic safety
certification permits the BA307E to be
installed throughout the world. The
4/20mA input terminals comply with the
requirements for simple apparatus which,
together with the low voltage drop, allow the
indicator to be connected in series with most
intrinsically safe 4/20mA loops. The BA307E
may also be installed in dust hazardous
areas. All input safety parameters are the
same or greater than those for the preceding
BA307C, thus allowing the BA307E to safely
replace the earlier model.
A backlight which may be loop or separately
powered is available as a factory fitted option.
It provides green background illumination
allowing the display to be read at night or in
poorly illuminated areas. When powered from
the 4/20mA loop no additional intrinsically
safe interface or wiring is required and the
indicator input remains compliant with the
requirements for simple apparatus. Powering
from a separate supply produces a brighter
backlight but requires an additional
intrinsically safe interface and field wiring.
Two backlights may be separately powered
from one intrinsically safe interface.
Optional dual alarm outputs which can
switch hazardous or safe area loads, such as
sounders, beacons or solenoid valves, are
available as a factory fitted option. The two
galvanically isolated solid state alarm outputs
may be independently conditioned as high or
low alarms with normally open or closed
outputs. Annunciators on the display show
the status of both alarm outputs.
Reliability is ensured by component
conformal coating, protection from
incorrect connection and radio frequency
interference. The indicator has been
subjected to vibration testing and is supported
by a three year guarantee.
Other models in this range include the
BA327E which has a similar specification
with five 11mm high digits and a 31 segment
bargraph.
ATEX, FM, cFM, INMETRO & IECEx.
u Optional backlight &
alarms.
u Easy on-site scale card installation.
u IP66 front
u Root extractor and
16 segment lineariser.
u 96 x 48mm
DIN enclosure.
u 3 year guarantee
SPECIFICATION
DIMENSIONS (mm)
Input
Current
4 to 20mA
Voltage
Less than 1.2V at 20°C
Less than 1.3V at -40°C
Less than 5V with optional loop powered
backlight.
Overrange±200mA or ±30V will not damage the
indicator.
Recommended panel cut-out
To achieve an IP66 seal between
the instrument and the panel
90 +0.5/-0.0 x 43.5 +0.5/-0.0
96
Ga Ex ia IIC T5
Scale
card
Accuracy at 20°C
Linear
±0.02% of span ±1digit
Root extracting±16µA at input ±1 digit.
Temperature effect on:
Zero
Less than 25ppm of span/°C
Span
Less than 50ppm of span/°C
Series mode rejectionLess than 0.05% of span error for 1mA
pk to pk 50 or 60Hz interference.
Canada cFM
File
3610 Entity
CL I: Div 1
Gp A, B, C, & D
T5 @ 70°C
3611 Nonincendive
CL I, II, III: Div 2
Gp A, B, C, D, E, F & G
T5 @ 70°C
3041487
3041487C
International IECEx
Code
Ex ia IIC T5 Ga
Ex ia IIIC T80°C Da IP20
Tamb = -40 to 70°C
Cert. No
IECEx ITS11.0015X
(Special conditions only apply for use in
Group IIIC conductive dusts)
Brazil INMETRO
Environmental
Operating temp
Storage temp
Humidity
Vibration
Enclosure
EMC BA307E
48
Push buttons
(Function in display mode)
▼
Shows display with 4mA input
▲
Shows display with 20mA input
‘P’Displays input in mA or a % of span, has a
modified function when alarms are fitted.
‘E’
Used for tare function
USA FM
Standard
Code
Standard
Code
File
7.5
65
Display
TypeLiquid crystal, non-multiplexed 4 digit
15mm high.
SpanAdjustable between 0 & ±9999 for a 4/20mA
input.
ZeroAdjustable between 0 & ±9999 with 4mA
input.
Decimal point
1 of 3 positions or absent
Polarity
Automatic minus sign
Zero blankingBlanked apart from 0 in front of decimal point
DirectionDisplay may increase or decrease with
increasing 4/20mA input.
Reading rate
2 per second
Overange9999 or -9999 with all decimal points flashing.
Intrinsic safety
Europe ATEX
Code
Group II Category 1GD
Ex ia IIC T5 Ga
Ex ia IIIC T80°C Da IP20
Tamb = -40 to 70°C
Input parameters
Ui
30V dc
Ii
200mA
Pi
0.84W
Output parametersComplies with requirements for
simple apparatus.
Cert. No.
ITS11ATEX27254X
(Special conditions only apply for use in
Group IIIC conductive dusts)
DIN 43 700
92.0 +0.8/ -0.0 x 45 +0.6 -0.0
Panel cut-out
Terminals for optional
backlight and alarms
are shown in outline
TERMINAL CONNECTIONS
+
1 2 3 4
8 9
+ -
10 11
+ -
Alarm 1
Alarm 2
4/20mA
Terminals 2 & 4 are
internally linked for
joining return
4/20mA wire
Terminals for
optional alarms
12 13 14
+ - - Separately
powered
Loop powered
Common
Terminals for
optional backlight
Accessories
BacklightGreen, may be loop or separately powered.
Loop powered
Indicator input voltage 5V max.
Separately powered
9V at 22.5mA from IS interface
AlarmsTwo alarm outputs each of which may be
independently configured as a high or low
alarm contact with a NO or NC output.
OutputIsolated solid state switch complying with
requirements for simple apparatus.
Ron
5Ω + 0.7V max
Roff
1MΩ min
Printed scale cardBlank card fitted to each Indicator can be
supplied printed with specified units of
measurement.
Pack of printed scale cardsContains 26 common units of measurement
and four blanks.
Tag legend Specified tag number or application thermally
printed onto rear of the instrument.
HOW TO ORDER
Please specify
BA307E
Linear, root or lineariser*
NCC 12.0969X
Model number
Display mode
Display at:
4.000mA
20.000mA
-40 to 70°C
-40 to 85°C
to 95% at 40°C noncondensing
Report available
Front IP66, rear IP20
Complies with 2004/108/EC
Accessories
Please specify if required
CertificationINMETRO
Display backlight
Backlight
Dual alarms
Alarms
Scale card
Legend required
Tag
Legend required
Mechanical
TerminalsScrew clamp for 0.5 to 1.5mm² cable,
removable terminal blocks.
Weight
0.2kg
XXXX
XXXX
Include position of decimal point &
sign if negative, plus intermediate
points if linearisation is required.*
* Will be set to display 0.0 at 4mA and 100.0 at 20mA with a linear display if calibration information is not supplied. Can easily be recalibrated on-site.
04
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