Advisor A75 Universal process input panel meter

Advisor A75
Universal process
input panel meter
Programmable
input range
Optional
transmitter
supply
2-wire
Tx
Optional 4-wire
transducer
supply
Power supply
24Vdc, 110V ac
230V ac
Two optional
alarms
Optional 4/20mA
output
Input
◆ 4 digit LED display
with adjustable
brilliance
◆ 24Vdc, 115Vac &
230Vac models
The Advisor A75 is a universal panel meter
for displaying process variables in
engineering units. In addition to the features
offered by the fixed range A70, the A75 has
twelve on-site selectable process voltage and
current inputs. The meter is housed in a
robust enclosure with high quality pushbuttons, display and terminals and will
provide many years of reliable service.
Main application of the A75 is to display a
current or voltage such as 4/20mA or 0/10V in
engineering units. Twelve different input
ranges can be selected, and the meter may
be calibrated to display the input in any linear
engineering units such as level, pressure
or position. For flow applications the
A75 includes a selectable root extractor to
linearise the display. Optional accessories
which further extend the applications include
an isolated supply to power a remote 2-wire
transmitter, a four wire transducer power
supply, a 4/20mA isolated output proportional
to the display, and two alarms. To prevent
operators being dazzled, the display brilliance
is continuously adjustable from the front
panel.
Calibration and programming is performed
via the four front panel push-buttons which
‘click’ when operated. To prevent accidental
or unauthorised adjustment, the programming
functions are contained in easy to understand
menus protected by a four digit user definable
security code. All the instrument functions are
programmable. The display can easily be
recalibrated on-site using the internal
references or an external voltage or current
source. Loss of power does not affect
calibration as all settings are retained for at
least five years after power loss or
disconnection.
The front panel is a robust, easy to clean
Noryl moulding sealed with a non-reflective,
scratch resistant polyester membrane. All A75
panel meters have a captive neoprene gasket
which provides an IP65 seal between the
enclosure and the panel, thus making the
instrument suitable for installation in panels
which are frequently hosed down.
The transmitter power supply is an optional
fully isolated dc supply which may be used to
power any external instrument which
consumes less than 22mA. It is primarily
intended for energising remote loop powered
4/20mA temperature or pressure transmitters.
An optional four wire power supply is
available for powering remote bridges,
enabling the A75 panel meter to display linear
weights and pressures without the need for a
separate transmitter. The sensing wires
eliminate the effect of cable resistance, and
five different output voltages may be selected
by the position of an internal link.
A 4/20mA current proportional to the A75
display is obtainable from the optional retransmitted output. This current is fully
isolated and may be programmed to
represent any part of the display.
For weighing applications an optional Tare
Function modifies the operation of the front
panel push-buttons so the display may be
zeroed at any input. The initial reading is
therefore automatically subtracted from
subsequent readings. A front panel LED is
illuminated when the tare button has been
operated.
Optional alarms provide two channels
each with a relay output which may be
independently programmed as a high or low
trip. The alarm set-points are adjusted via the
front panel push-buttons and may be
accessed from the display mode via a
separate security code. Separate front panel
LED annunciators show the status of each
alarm.
Reliability is ensured by an ISO9001
approved quality control system. The A75 is
protected from reverse connection and
overrange inputs, and incorporates extensive
radio frequency filtering to comply with the
European EMC Directive.
A single range panel meter is also available,
see datasheet for Advisor A70.
◆ 12 selectable process
voltage and current
inputs
◆ Maximum & minimum
display
◆ Optional:
Transmitter
power supply
Transducer
power supply
Alarms
Isolated 4/20mA
output
Tare function
◆ 96 x 48mm DIN
enclosure with easy
to clean IP65 front.
◆ 3 year guarantee
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
SPECIFICATION
DIN 43 700
92.0 +0.8/ -0.0 x 45 +0.6 -0.0
4 digit LED 14.2mm high with adjustable
brilliance.
Adjustable between -1999 and 9999
Adjustable between 0 and ±11989
1 of 4 positions selectable or absent
Only 1 leading zero is displayed
Automatic minus sign
Displays -1 or 1
Greater than 2 per second
In operating mode without accessories
Shows display at minimum input
Shows display at maximum input
Displays input in mA or volts, or as a
percentage of input range. When tare or
alarm accessories are fitted has modified
function.
Input
Range
Selectable on-site
0 - 100mV, 0 - 200mV, 0 - 500mV, 0 - 1V,
0 - 2V, 0 - 5V, 1 - 5V, 0 - 10V, 0 - 20mA,
4 - 20mA, 0 - 50mA or 10 - 50mA.
Isolation
To achieve an IP65 seal between
the instrument and the panel
90 +0.5/-0.0 x 43.5 +0.5/-0.0
84
Push-buttons
Down
▼
Up
▲
Scroll
Impedance
Voltage ranges
Current ranges
Recommended panel cut-out
7
Zero
Span
Decimal point
Zero blanking
Polarity
Overrange
Reading rate
4W max
96
Greater than 1M
Less than 10
500V rms between input, power supply
and optional accessory outputs.
Performance
Accuracy including non-linearity at 20˚C
Linear
±0.05% of span ±1/2 digit
Root extracting
±0.1% of range at input ±1 digit
Clip-off
Meter displays 0 below 5% flow
Resolution
1 part in 10,000
Less than 0.2% error for 250V rms
50Hz.
Temp. effect
Zero drift
Span drift
50ppm max/˚C of display span
100ppm max/˚C of display span
LVD
Mechanical
Terminals
Weight
24Vdc
110 & 230Vac
Accessories
Transmitter power supply
Transducer supply
Drift
Com.
20mA
L
+ -
N
Power supply
Optional alarms
Optional transmitter
power supply
Optional transducer
power supply
Optional
4/20mA output
(Source)
14 15 16 17
14 15 16 17
14 15 16 17
0
+24V
4/20mA
–
+
HOW TO ORDER
0.25kg
0.45kg
24Vdc at 22mA max short circuit protected.
5V, 10V, 12V or 15V at 22mA
Two sense wires eliminate affect of cable
resistance.
Less than 100ppm/˚C
Isolated analogue output programmable to
represent any part of the display.
500Ω maximum
Tag number
N\C N\O
Alarm 2
11 12 13
Screw clamp for 0.5 to 1.5mm cables
4/20mA output
Typeset scale card
N\C N\O
Alarm 1
11 12 13
2
Two independent alarm channels
Single pole change over contact
250V; 5A ac; 30V; 5A dc
High or low trip. Latching or non-latching
Tare function
5 6 7 8 9 10
Input
-20 to +50˚C
-40 to +85˚C
To 95% at 40˚C non-condensing
Front IP65 rear IP20
In accordance with EU Directive
89/336/EEC, full report available.
In accordance with EU Directive
73/23/EEC, full report available
Alarms
Output
Rating
Programmable functions
Load
Vin +
1 2 3 4
50mA
Environmental
Operating temp
Storage temp
Humidity
Enclosure
EMC
115V ac &
230V ac models 24V dc model
- sense
Common mode
ac rejection
TERMINAL CONNECTIONS
+ O/P
Less than 1% error for 200mV rms
45 - 55Hz. 2% at 60Hz
+ sense
Series mode
ac rejection
Terminals for options
are shown in outline
48
Display
Type
10 to 35Vdc
99 to 132Vac 50/60Hz
198 to 264Vac 50/60Hz
- O/P
Supply
Voltage
DIMENSIONS (mm)
Primarily intended for weighing applications.
Sets meter display to zero when
button
is operated. Function indicated by front
panel LED annunciator.
Selection of common units supplied with
each instrument. Custom typeset card can
be supplied.
Thermally printed number on rear of the
instrument.
Please specify
A75
24Vdc, 115Vac or 230Vac
0 - 100mV, 0 - 200mV, 0 - 500mV,
0 - 1V, 0 - 2V, 0 - 5V, 1 - 5V, 0 - 10V,
0 - 20mA, 4 - 20mA, 0 - 50mA or
10 - 50mA.
Required display at zero and full scale input.*
ON or OFF*
Model number
Power supply
Input range
Display
Root extractor
*Will be calibrated 4/20mA input, with 0 to 100.0 display and rooter OFF, if
information is not supplied. Can easily be re-calibrated on-site.
Accessories
Transmitter power supply
Please specify if required
Transmitter supply
Transducer power supply
output voltage
Transducer supply
5V, 10V, 12V or 15V
4/20mA retransmitted output
4/20mA output
Meter display for 4mA
Meter display for 20mA
Alarms
Tare function
Custom scale card
Tag number
Alarms
Tare
Legend
Legend
TR Automatyka Sp. z o. o.
Tel. (+48 022) 886 10 16
www.trautomatyka.pl
ul. Lechicka 14 ; 02-156 Warszawa
Fax. (+48 022) 846 50 37
biuro@trautomatyka.pl
Only one can
be fitted
04