Fire Fighting Enterprises Talentum UV/IR2 Flame Detector - Manual (Page 3)

10
EExd System Drawing
Hazardous Area Safe Area Safe Area Apparatus
Unspecified except that it
must not be supplied from
nor contain under normal or
abnormal conditions a source
of potential exceeding 250V
RMS or 250V DC with
respect to earth.
-
+
24V DC Normal
(Break supply to reset
if detector set to latch)
Zone
Refer to note 6
Fault
Relay
Fire
Relay
2
1
-
+
Flame Detector
6
5
7
8
Fault
Relay
Fire
Relay
2
1
-
+
Flame Detector
6
5
7
8
EO
L
No
Barriers
Required
+
-
-
+
+
-
i = See detector data
sheet for details
NOTE 1
WARNING – Ensure ALL power is OFF before/during
installation/maintenance.
NOTE 2
Ensure the details on the enclosure label comply with
the hazardous area specified.
NOTE 3
The installation must comply with national installation
requirements (for example to EN 60079-14)
i
24V DC Normal
(Break supply to reset
if detector set to latch) 2
1
-
+
Flame Detector
No
Barrier
Required
+
- -
+
NOTE 4
If required a loading resistor or end of line device (EOL)
can be connected between the detector terminals of any
circuit. The total power dissipation and temperature
classes within the enclosure must not be exceeded,
30W – T6.
3
Equipment Markings
ATEX
(EU Directive 94/9/EC)
II 2 G D
Equipment
Definition Type of Explosive
Atmosphere Group II
Category
G - gas vapour mist
D - dust
Zone
1 - very high level of protection
in which explosive atmosphere mixtures of air gases,
vapours or mist are present continuously, for long
periods
0
2 - high level of protection
in which explosive atmosphere mixture of air and gases,
vapours or mist are likely to occur
1
3 - normal level of protection
in which explosive atmosphere mixtures of air and
gases, vapours or mist are unlikely to occur and if it
occurs it will exist only for a short period
2
These Flame Detectors are suitable for equipment categories 2 and 3, G or D.
Note: The detectors are not certified for category 1 areas, see ‘IS’ products.
Table 1 Equipment Categories and Type of Explosive Atmosphere (Group II)
CE Marking
EU Explosive
Atmosphere
Symbol
Group II