5. INSTALLATION
5.1 Location
The BA354E Rate Totaliser is housed in robust
IP66 glass reinforced polyester (GRP) enclosures
incorporating an armoured glass window and
stainless steel fittings making it suitable for exterior
mounting in most industrial installations, including
off-shore and waste water treatment.
The BA354E will function and is certified
intrinsically safe at ambient temperatures between
–40ºC and +70ºC, but the display only functions at
ambient temperatures between –20ºC and +70ºC,
The enclosure is surface mounting but may be pipe
mounted using one of the accessory kits described
in section 10.5 of this manual. 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.
Terminals 2 and 4 are internally joined and may be
used for linking the return 4/20mA wire - see Fig 2.
Similarly terminals 5 and 6 are internally joined and
may be used for linking cable screens. The Rate
Totaliser’s earth terminal is connected to the
carbon loaded GRP enclosure. If this enclosure is
not bolted to an earthed post or structure, the earth
terminal should be connected to the plant potential
equalising conductor.
The enclosure is fitted with a bonding plate to
ensure electrical continuity between the three
conduit / cable entries.
5.2 Installation Procedure
Fig 4 illustrates the instrument installation
procedure.
1. Remove the instrument terminal cover by
unscrewing the two captive 'A' screws.
2. Mount the instrument on a flat surface and
secure with screws or bolts through the two
'B' holes. Alternatively use one of the pipe
mounting kits described in section 10.5.
3. Remove the temporary hole plug and install
an appropriate IP rated cable gland or
conduit fitting. If more than one entry is
required, one or both of the IP66 stopping
plugs may be replaced with an appropriate IP
rated cable gland or conduit fitting.
4. Connect the field wiring to the terminals as
shown in Fig 5 and replace the instrument
terminal cover. Evenly tighten the two 'A'
screws.
Fig 4 BA354E installation procedure
Fig 5 Dimensions and terminal connections
5.3 EMC
The BA354E 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 in the safe
area.
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