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8-3
Rosemount Tank Radar REX
Chapter 8 Junction Boxes
Installation Manual
308014EN, Edition 4
May 2013
8.2 Junction Boxes for Intrinsically Safe and EEX e environments
Figure 8-3. Intrinsically Safe and Explosion Proof Junction
Boxes.
8.2.1 JB 140-15 for EEx i environments
JB 140-15 (EEx i) is used when a DAU or an RDU 40 is located more
than 2 m away from the RTG and should only be used for intrinsically
safe connections.
JB 140-15 has 15 terminals and has six openings for M25 glands,
suitable for 9-16 mm cable diameter.
8.2.2 JB 140-11 for EEx e environments
JB 140-11 (EEx e) is used to connect power and the TRL/2 Bus to the
RTG.
JB 140-11 contains 15 terminals and has five openings for M25 glands,
suitable for 9-16 mm cable diameter (see Fig. 8-3).
Note! JB140-15 is not approved for all markets.
DAU / RDU
TRL/2 Bus,
Analog
outputs,
Relay
output,
Power 230/
115 VAC
JB 140-15
(EEX i)
JB 140-11
(EEX e)
~ 2 m cable
with
protective
hose
~ 2 m cable with
protective hose
Cable
JB_general_ed3
5 x M25