Siemens SITRANS LUT400 Betriebsanleitung Seite 11

Preparation for cable entry
Cables can be routed through conduit or enter the enclosure through cable glands. Follow
steps 1 to 5 below to first uncover cable entry holes, then complete steps for use with conduit,
or with cable glands.
1) Ensure enclosure lid is closed and fastener screws are locked.
2) Place tip of screwdriver into groove on the outer diameter of the knock-out tab (see
illustration that follows).
3) Hit the end of the screwdriver with palm of hand to knock out entry hole.
4) Loosen screws and remove enclosure lid.
5) Remove plastic piece(s) that covered entry holes from enclosure. Be careful not to
damage the electronics with static electricity, or the tools used to knock out entry holes.
cable entry holes
knock-out
tab
(3 places)
Cable routed 
through conduit
(continued from steps 1 to 5 above)
6) After preparing for cable entry in
steps 1 to 5 above, attach the conduit
to the enclosure using only suitable
size fittings approved for water-tight
applications. (Conduit size is 1/2" NPT.)
7) Replace enclosure lid and tighten
screws.
7ML19985XU81
SITRANS LUT400
groove for
screwdriver 
(3 places)
Cable exposed and entering 
through the cable glands
(continued from steps 1 to 5 above)
6)
7)
8)
9)
SITRANS LUT400 (HART)
Notes:
• When cable entry hole knock-
out tabs have been removed,
the entry hole is 21.4 mm to 21.6
mm in diameter.
• M20 cable glands (20 mm in
diameter), and 1/2" NPT con-
duit (21.3 mm in diameter) fit
this entry hole.
• Caution should be taken when
selecting appropriate seal for
entry holes. Flat gasket is rec-
ommended (instead of O-ring).
If alternate cable glands are
used, it is the customer's
responsibility to maintain IP65
rating of entry holes.
After preparing for cable entry in steps
1 to 5 above, unscrew the glands and
attach them firmly to the enclosure.
Thread the cables through the glands.
Ensure the power cable is kept
separated from the signal cables and
then wire the cables to the terminal
blocks.
Tighten the glands to form a good seal.
Replace enclosure lid and tighten
screws.
Page EN-9