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ATEX COMBINED
Safety has no limits Flame proof enclosure ‘d’
There is a danger of explosion wherever In the case of pressure-resistant encapsulation,
combustible gases, vapours, fluids or dusts occur the actual operating equipment is built into a
and can mix with air, oxygen or another reactive pressure-resistant housing. In the event of an
gas. explosion inside, the housing prevents an ignition
breakthrough into the surrounding area. The
The danger can arise in very diverse locations, explosion is therefore restricted to the interior
e.g. in the petrochemical and chemical industry of the device. On account of the necessary wall
or at filling stations and oil/gas rigs. However, thickness, devices in this protection system
facilities such as corn silos and coating plants are of a very sturdy construction and thus also
are also potentially at risk of an explosion. often very well suited for adverse environmental
Explosions endanger man and the environment. conditions.
For this reason, international measures have
been developed that are intended to prevent Enhanced safety ‘e’
explosions or to minimise their effects. This type of enhanced protection is usable with
only a few types of equipment/components (e.g.
Our Ex signaling devices meet the toughest terminals). This type of protection is conveniently
requirements and are subjected to the most often combined with pressure resistant
stringent checks. Their quality and safety are encapsulation.
checked by responsible bodies for compliance
with the highest quality standards. In alarm products, this means that all essential
components are housed in the pressure-resistant
housing and only the connection terminals are
accessible in the increased safety housing. For
this reason we also offers most devices with
an ‘e connection box’ in order to enable simple
and safe electrical connections to be made. The
sensitive electronic components are therefore
protected against accidental damage during
mounting.
Intrinsically safety ‘i’
In the ignition protection type ‘i‘, the current and
voltage of allenergy storage devices as well as the
complete device are limited to the extent that no
ignition sparks and no excessively hot surfaces
can be generated. An explosive atmosphere can
develop, but it will not be ignited.
