KROHNE OPTIBAR PM 5060 C Ex d ia EN - Manual (Page 14)

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FURTHER NOTES
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OPTIBAR 5060
www.krohne.com 07/2014 - 4003592001 - AD OPTIBAR 5060 Exd ia R01en
4.7 Protection type flameproof enclosure Ex "d"
The terminals for connecting to the operating voltage, i.e. signal circuits, are integrated in the
terminal compartment according to protection type flameproof enclosure "d".
The gaps between housing and cover as well as between threaded fitting and container are
ignition-proof gaps.
The "Ex-d" terminal compartment has an M20 x 1.5 or 1/2-14 NPT thread for the connection of a
certified "conduit" system or for the installation of an "Ex-d" cable entry certified according to
EN 60079-1 or IEC 60079-1. Simple cable entries should not be used. Refer to sections 13.1 and
13.2 of EN 60079-1 or IEC 60079-1. When connecting to a "conduit" system, an appropriate
sealing mechanism must be located directly on the "Ex-d" terminal compartment.
The factory may supply a certified "Ex-d" cable entry. Depending on the type ordered, it may be
suitable for sheathed or unsheathed cable types. The document supplied with the corresponding
cable entry must be observed. The "Ex-d" cable entry must be permanently screwed into the
housing. The supplied cable entry is suitable for the housing temperature range certified for the
OPTIBAR * 5060 VGK5/6/D*A/W E/Z/6/7. If a cable entry other than the one supplied is used, the
other certified cable entry or the temperature classes of the electronics, depending on the
permissible temperature, determines the maximum permitted ambient temperature of the
housing.
The screw plug (blind plug) supplied by the factory, depending on the type ordered, is part of the
"Ex-d" housing. If a screw plug other than the one supplied is used, it must be certified according
to EN 60079-1 or IEC 60079-1.
Ensure that before opening the "Ex-d" terminal compartment and when the cover of the
compartment is open (e. g. when connecting or servicing) the supply line is de-energised or that
there is no explosive atmosphere present.
The connecting cable to the "Ex-d" terminal compartment must be fixed and laid so that it is
sufficiently protected against damage. Lay the connecting cable in accordance with EN 60079-14
or IEC 60079-14.
The connecting cables, cable entries and screw plugs or pipeline sealing mechanisms must be
suitable for the lowest ambient temperature.
Prior to start-up, ensure that the cover of the "Ex-d" terminal compartment is screwed in all the
way until it stops. Secure it by unscrewing the locking screw of the cover until it stops.
Unused openings must be sealed according to EN 60079-1 or IEC 60079-1 paragraph 11.9.
The cover of the "Ex-d" terminal compartment has the warning label "Do not open when an
explosive gas atmosphere is present".
.book Page 14 Monday, July 7, 2014 3:31 PM