9
5. INSTALLATION
5.1 Location
The BA344D rate totaliser 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 off-shore and waste
water treatment installations. Please consult
BEKA associates if high vibration is
anticipated.
The BA344D enclosure is surface mounting.
Accessory kits described in sections 9.4 & 9.5
of this manual enable the instrument to be
mounted onto a vertical or horizontal pipe, or
directly onto a flowmeter conduit entry.
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 BA344D earth terminal is connected to the
internal EMC filters. For maximum radio
frequency interference rejection this terminal
should be connected to a local earth, or to a
cable screen which is earthed in the safe area.
The BA344D enclosure is supplied with a
bonding plate to ensure electrical continuity
between the three conduit / cable entries.
5.2 Installation Procedure
Fig 5 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 9.4 &
9.5
c.
Remove the temporary dust seals from
the three cable entries and install the
required glands, conduit fittings or
blanking plugs.
Note
: The temporary dust seals fitted for
transit do not maintain the IP66
protection of the BA344D enclosure.
d. Connect the field wiring to the terminals
as shown in Fig 6.
e. If the instrument is about to be
commissioned, turn the BA344D ON by
moving the slide switch located above
terminals 3 and 4 to the right. See Figs 5
& 6.
Note:
If the instrument has not been
switched on recently it may take a few
minutes to start functioning. If the
instrument does not start, please refer to
the battery configuration instructions in
Appendix 2
.
f. Replace the instrument terminal cover
and evenly tighten the two 'A' screws.
Fig 5 BA344D installation procedure
5.3 EMC
The BA344D complies with the requirements of
the European EMC Directive 2004/108/EC.
For specified immunity all wiring should be in
screened twisted pairs. The BA344D earth
terminal should be locally earthed or connected
to a cable screen which is earthed in the safe
area.
To prevent circulating currents, cable screens
should only be earthed at one point.
Summary of Contents for BA344D
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