6
5.2 Installation Procedure
Fig 4 illustrates the instrument installation
procedure.
a.
Remove the enclosure cover by unscrewing
the four captive 'A' screws.
b.
Remove the indicator assembly from the
enclosure by unscrewing the three captive 'B'
screws.
c.
Mount the enclosure on a flat surface and
secure with screws or bolts through the four
corner 'C' holes. Alternatively use one of the
pipe or panel mounting kits described in
sections 8.4 and 8.5
d.
Remove the temporary dust seals from the
two cable entries and install Ex e or Ex n
certified glands, conduit fittings or blanking
plugs.
e.
Connect the field wiring to the terminals as
shown in Fig 5.
f.
Replace the indicator assembly and evenly
tighten the three 'B' screws.
g. Replace the enclosure cover and evenly
tighten the four 'A' screws.
Fig 4 BA304NC installation procedure
5.3 EMC
The BA304NC complies with the requirements of
the European EMC Directive 89/336/EEC. For
specified immunity all 4/20mA wiring should be in
screened twisted pairs, with the screen earthed
within the safe area. Terminal 7 should be
connected to a local earth or to a cable screen
which is earthed in the safe area.
Fig 5 Dimensions and terminal connections
