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10
Special instructions for use in
explosive environments and
functional safety
10.1
General comments
The OLCT 60 sensors conform to the requirements of European Directive ATEX 2014/34/UE
relating to explosive Dust and Gas atmospheres. On account of their metrological performance
(currently under re-evaluation of the certification with the notified body INERIS following the
modifications of the standard), the OLCT 60 transmitter detectors intended for the measurement
of explosive gases are classed as safety devices according with the European Directive and may,
therefore, contribute to limiting the risks of explosion.
The information given in the following sections should be respected and taken into account by the
manager of the site where the equipment is installed. As far as the aim of improving the health
and safety of workers who are exposed to the risks of explosive atmospheres is concerned, refer
to European Directive ATEX 1999/92/CE.
10.2
Warnings
Do not open when energized. After de-energizing, delay 2 minutes before opening. Read
instructions notice (cable glands).
10.3
Requirements for use in dust explosive atmospheres
For the equipment installed in dust explosive atmosphere, user shall ensure a sufficient cleaning
to prevent dust accumulation on the device. The maximum permissible thickness of a dust layer
must be less than 5 mm.
10.4
Cable entries:
Cable glands and other wiring accessories (plugs, adaptors, etc.) shall be "db" certified for use
in gas explosive atmospheres and "tb" for use in dust explosive atmospheres. They must be at
least IP66 and of M20x1.5 6g or M25x1.5 6g types in accordance with ISO965-1 and
ISO965-3 standards. Minimum depth of engagement must be 5 threads and installation must be
NPO60GB
Revision F.2
OLCT 60
FIXED POINTGAS MONITOR
USER MANUAL
53
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