BEKA BA364G, Manual

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3. CERTIFICATION
The BA367NE has ATEX and IECEx Ex nA gas and
Ex tc dust certification. The main sections of this
instruction manual describes ATEX gas certification.
ATEX dust certification is described in Appendix 1, d
IECEx gas and dust certification in Appendix 2 and
ETL & cETL certification in Appendix 3.
3.1 ATEX Ex nA certification
Notified Body Intertek Testing and Certification Ltd
have issued the BA367NE with a Type Examination
Certificate number ITS16ATEX48409X. This has
been used to confirm compliance with the European
ATEX Directive for Group II, Category 3G
equipment. The instrument carries the Community
Mark and, subject to local codes of practice, may be
installed in any of the European Economic Area
(EEA) member countries and in the EEA EFTA
states, Iceland, Liechtenstein and Norway. ATEX
certificates are also acceptable in Switzerland and
Turkey. The European Commission's Blue Guide
lists the member states, overseas countries and
territories that have adopted harmonisation
legislation.
This section of the instruction manual describes
ATEX installations in explosive gas atmospheres
conforming with EN 60079-14
Electrical installations
design, selection and erection . When designing
systems for installation outside the UK the local
Code of Practice should be consulted.
3.2 Zones, gas groups and T rating
The Counter has been certified as Group II Category
3G Ex ic nA IIC T5 Gc apparatus. This is non-
sparking apparatus complying with EN 60079-15
Equipment protection by type of protection 'n' that
minimises the risk of arcs or sparks capable of
creating an ignition hazard occurring during
conditions of normal operation.
The Counter's front panel push button contacts are
non incendive and have been certified intrinsically
safe Ex ic without an external Zener barrier or
galvanic isolator, as shown on the Type Examination
Certificate. This allows the Counter to be adjusted
and configured live when installed in a Ex n panel
enclosure located in Zone 2.
When connected to a suitable system and correctly
mounted in a panel enclosure complying with the
requirements for Type of protection 'n', the panel
enclosure containing the BA367NE Counter may be
installed in:
Zone 2 explosive gas air mixture not
likely to occur, and if it does
will only exist for a short time.
Be used with gases in groups:
Group A propane
Group B ethylene
Group C hydrogen
In gases that may safely be used with equipment
having a temperature classification of:
T1 450 o C
T2 300 o C
T3 200 o C
T4 135 o C
T5 100 o C
At ambient temperatures between -40 and +60 o C.
This allows use with all commonly used industrial
gases except carbon disulphide CS
2
.
3.3 Special conditions for safe use
Special conditions for safe use are specified by the
Ex nA certificate indicated by the certificate number's
'X' suffix. These state that the BA367NE Counter
should be:
a. Mounted such that the instrument terminals
are protected by at least an IP54 enclosure
certified to IEC 60079-0 or IEC 60079-15 as
appropriate.
b. Be supplied from limited energy circuits with
output parameters in normal operation equal
to, or less than the instruments input
parameters.
These special conditions for safe use can be
satisfied by mounting the BA367NE in an Ex n, Ex e
or Ex p panel enclosure. For ATEX Category 3
installations in Zone 2, self or third party certified
Ex n, Ex e or Ex p panel enclosures may be used.
Additional requirement apply for non-metallic panel
enclosures.
3.4 Power supply
The input safety parameters for the power supply
terminals 1 and 2 are:
Ui = 30dc
Ii = 100mA
This allows the BA367NE to be powered from any dc
supply which in normal operation has an output
voltage of less than 30V. See section 4.1 for power
supply recommendations.
3.5 Pulse input
The BA367NE Counter has a single pair of pulse
input terminals 5 and 6 that may be configured for
use with different types of sensor.
For sensors that require energising to determine
their state, such as switch contacts or a 2-wire
proximity detector, an external link between
terminals 3 & 4 of the BA367NE connects an internal
7V, 6mA supply to the input terminals. Energising is
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