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FURTHER NOTES
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OPTIBAR DP 7060
www.krohne.com
05/2017 - 4005720001 - AD OPTIBAR 7060 Ex db ia R01en
4.5 Impact and friction sparks
When used as category 1/2G equipment, the OPTIBAR DP 7060 VGK7*A/W/V E/Z/6/7 in light alloy
(aluminium/titanium) versions must be mounted in such a way that sparks from impact and
friction between light alloy and steel (except stainless steel, if the presence of rust particles can
be excluded) cannot occur.
4.6 Material resistance
With applications requiring 1/2G equipment, the OPTIBAR DP 7060 VGK7*A/W/V E/Z/6/7 should
only be used in media for which the wetted materials are sufficiently resistant against.
4.7 Installation / mounting
The OPTIBAR DP 7060 VGK7*A/W/V E/Z/6/7 must be mounted such that the sensor is effectively
secured against touching the vessel wall, under consideration of other vessel installations and
flow conditions in the vessel. This applies especially to suspension pressure transmitters and
versions with distance tube lengths over 3 m.
4.8 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" electronic 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" electronic compartment.
As an option, a certified "Ex-d" cable entry can be supplied from the factory. Depending on the
type ordered, it is suitable for the insertion of reinforced or non-reinforced cables. 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 DP 7060 VGK7*A/W/V E/Z/6/7. If a cable
entry other than the one supplied is used, the separately certified cable gland or the
temperature class at the electronics determines the maximum permissible ambient
temperature of the housing, depending on the permissible temperature.
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" electronic 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.
