4. INSTALLATION
4.1 Location
The BA554E Rate Totaliser is housed in a 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
instrument should be positioned where the display
is not in continuous direct sunlight.
The BA554E will function at ambient temperatures
between –40ºC and +70ºC, but the display only
functions at ambient temperatures between –20ºC
and +70ºC,
The Rate Totaliser is surface mounting, but may be
pipe mounted using one of the accessory kits
described in section 9.5 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
Totalisers 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 enclosures are fitted with a bonding plate to
ensure electrical continuity between the three
conduit / cable entries.
4.2 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 or
stem mounting kits described in section 9.5.
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 BA554E installation procedure
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