5. INSTALLATION
5.1 Location
The BA444DF-P PROFIBUS PA indicator is
housed in a robust IP66 glass reinforced polyester
(GRP) enclosure incorporating an armoured glass
window and stainless steel fittings. It is suitable for
exterior mounting in most industrial environments,
including offshore and wastewater treatment
installations. Please consult BEKA associates if
high vibration is anticipated.
The BA444DF-P enclosure is surface mounting.
Accessory kits described in sections 8.3 of this
manual enable the instrument to be mounted onto
a vertical or horizontal pipe.
The field terminals and the two mounting holes are
located in a separate compartment with a sealed
cover allowing the instrument to be installed
without exposing the display assembly.
The BA444DF-P earth terminal is connected to the
carbon loaded GRP enclosure. If this enclosure is
not bolted to a post or structure connected to the
plant potential equalising network, the instrument’s
earth terminal should be connected to the
potential equalising network as recommenced in
EN 60079-14.
The BA444DF-P enclosure is supplied with a
bonding plate to ensure electrical continuity
between the three conduit / cable entries.
5.2 Installation Procedure
Fig 2 illustrates the instrument installation
procedure.
a.
Remove the instrument terminal cover by
unscrewing the two captive 'A' screws.
b.
Mount the instrument on a flat surface and
secure with two M6 screws through the 'B'
holes. Alternatively use one of the mounting
kits described in section 8.3
c.
Remove the temporary hole plug and install a
cable gland or conduit entry with required
ingress protection. If more than one entry is
required, replace one or both IP66 stopping
plugs with a cable gland or conduit entry
having the required ingress protection.
d.
Connect the field wiring to the terminals as
shown in Fig 3.
e.
Replace the instrument terminal cover and
evenly tighten the two 'A' screws.
CAUTION installation in Zone 0
When installed in a Zone 0 potentially
explosive atmosphere requiring EPL Ga
apparatus, the instrument shall be installed
such that even in the event of rare incidents, an
ignition source due to impact or friction
between the aluminium label and iron/steel is
excluded.
No special conditions apply when the indicator is
installed in Zone 1 or in Zone 2.
Fig 2 BA444DF-P installation procedure
5.3 EMC
The BA444DF-P complies with the requirements of
the European EMC Directive 2004/108/EC. For
specified immunity, all wiring should be in screened
twisted pairs with the screens earthed at one point
in the safe area.
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