Electrical installation
Version with separate housing must be
grounded additionally at the vibrating
fork.
External equipotential
bonding terminal
Connect with
equipotential
bonding to
the plant
Cable glands and conduit
system for ATEX / IEC-Ex
(Dust and Gas Hazardous
Locations)
Installation according to the regulations of the country, where the product is installed.
Not used entries have to be closed with blanking elements certied for this purpose.
Where available the factory provided parts must be used.
A strain relief must be provided for the eld wiring cables, when the device is installed with the factory
provided cable glands.
The diameter of the eld wiring cable must match to the clamping range of the cable clamp.
If other than the factory provided parts are used, following must be ensured:
The parts must have an approval adequate to the approval of the level sensor (certicate and type of
protection).
The approved temperature range must be from the min. ambient temperature of the level sensor to the
max. ambient temperature of the level sensor increased by 10K.
The parts must be mounted according to the instructions of the supplier.
Installation of a ameproof/ explosion proof enclosure with a conduit system:
In a conduit system single electric conductors are installed in a certied pipe system. This pipe system
is in a ameproof / explosion proof construction as well. The ameproof / explosion proof enclosure
and the pipe system needs to be sealed from each other by a certied ameproof seal of a type “d”
or explosion proof of a type “XP”.This seals shall be installed directly in or at the conduit entries of the
ameproof / explosion proof enclosure. Not used entries have to be closed with blanking elements
certied for this purpose (ameproof type “d” or explosion proof type “XP”).
Conduit system for
FM and CSA
(Dust and Gas Hazardous
Locations)
General requirements:
In addition the regulations of the country must be observed. The used ameproof seals and blanking
elements must have an adequate type approval and a temperature range of at least –40°C (-40°F)
to +80°C (176°F). In addition they shall be suitable for the conditions and correctly installed. Where
available the provided original parts of the manufacturer must be used.
Installation of a ameproof enclosure “d” with a conduit system:
In a conduit system single electric conductors are installed in a certied pipe system. This pipe system
is in a ameproof construction as well. The ameproof enclosure “d” and the pipe system needs to be
sealed from each other by a certied ameproof seal. Conduit entries of a ameproof enclosure “d”
shall have installed the ameproof seal within 18 inches from the enclosure wall. Not used entries have
to be closed with adequate blanking elements of a certied ameproof type AEx Cl.1 Div.1 A.
Commissioning Commissioning only with closed lid.
Exception: Units with protection method Intrinsic safety (“NAMUR” and “8/16mA or 4-20mA”)
Opening the lid Units with ameproof GasExplosion approval (d-housing):
To prevent ignition of hazardous atmospheres, do not remove the lid (cover) while circuits are alive.
Units with Dust Explosion approval:
Before opening the lid ensure, that no dust deposits or cloudss are present.
Do not remove the lid (cover) when the power is live.
Units with protection method Intrinsic safety (“NAMUR” and “8/16mA or 4-20mA”):
The lid can be removed when the power is live.