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Instruction Manual A70 Version 6 19th April 2004
BEKA associates Ltd, Old Charlton Road, Hitchin, Hertfordshire. SG5 2DA. UK. Tel: +44 (0) 1462 438301
1) Unpacking
The packaging for your Advisor A70 includes:
1) An Advisor A70 digital panel meter
2) A pair of panel mounting clips
3) A neoprene sealing gasket
4) Full set of connector blocks
5) A set of self-adhesive engineering unit labels
6) This
instruction
manual
Check your unit against the above parts list to make sure
that nothing has been lost or damaged in transit. Keep the
packing box. If in the unlikely event you need to return the
Advisor, this will be useful. If any parts are missing or
damaged, please contact your supplier.
2) Safety and Warnings
The Advisor A70 has been designed and tested in
accordance with the EU directive (73/23/EEC) for Low
Voltage (LVD) apparatus and the EU Directive
(89/336/EEC) for Electromagnetic Compatibility (EMC).
Copies of the certificate of compliance and test reports are
available on request.
It should be noted that the instrument is a panel mounted
meter and after installation only the front panel is intended
for general operator access. Installation must be completed
by authorised and qualified personnel.
To ensure safe operation/installation the following warnings
must be observed.
•
Before installing the meter, ensure the marked
rated voltage agrees with the actual power supply
voltage.
•
A safety earth must be connected to a conductive
panel into which the meter will be installed. A
safety earth must be connected with the AC mains
supply to the instrument.
(If applicable)
•
Do not expose the rear of the meter to rain or
condensing humidity.
•
Do not use the meter in a flammable or explosive
atmosphere.
3)
Introduction
The Advisor A70 digital panel meter is one of a family of
Advisor panel meters. The A70 has been designed
specifically to display voltage or current process signals in
engineering units. It is a microprocessor based instrument
and is consequently easy to use. The A70 is factory set to
accept one of a range of input types e.g. 4/20mA. Once set,
the input can not be changed. (The Advisor model A75 has
a user programmable input). The power supply is also
selected at the time of ordering. Each Advisor has a display
brightness control and max & min hold already included in
the internal software.
There are also several other options that can be included
with an Advisor including;
•
Dual
Alarms
•
Analogue
Output
(4-20mA)
•
Transducer power supply output (user selectable)
•
Transmitter Power Supply (24Vdc @22mA)
•
Internal
Calibrator
•
Root
Extractor
•
Tare Function (for weighing applications)
The Advisor has been designed for reliability in harsh
environments. The front of the panel meter is rated with an
ingress protection of IP65. The programming buttons on the front
of the Advisors are sealed membrane type allowing the unit to be
kept clean by hosing or wiping down.
4) Electrical Specification
Power Supply
10 to 35Vdc
99 to 132Vac 50/60Hz or
198 to 264Vac 50/60Hz
Power Consumption
4W Max.
Input Range
(factory set to one of the following)
0-100mV, 0-200mV, 0-500mV, 0-1V, 0-2V, 0-5V, 1-5V,
0-10V, 0-20mA, 4-20mA, 0-50mA, 10-50mA, 0-0.5A,
0-1A and 0-2A
Input Impedance
Voltage input > 1 MOhms (0-100mV and 0-200mV >10
MOhms)
Current input < 10 ohms
Isolation
500Vrms between input, power supply and any optional
accessory outputs.
Accessories
(fitted at factory)
Alarms (Dual)
Single pole changeover contact rated at 250V; 5A ac
and 30V;5A dc.
Transmitter Power Supply
24Vdc @ 22mA short circuit protected
Transducer Supply Output
Selectable output 5,10,12 or 15Vdc @ 22mA, short
circuit protected. Drift < 100ppm/
o
C
Analogue Output (4-20mA)
500 Ohms load max.
5) Dimensions
Recommended panel cut-out: (dimensions in mm)
DIN43 700. 92.0+0.8/-0.0 x 45+0.6/-0.0
To achieve an IP65 seal between the instrument and the panel
90.0 +0.5/-0.0 x 43.5 +0.5/-0.0
CAUTION:
Read instructions prior to
installation and operation.
CAUTION:
Risk of electric shock