KROHNE OPTIFLUX 2000-4000-5000-6000-7300-IFC 300 Ex EN - Manual (Page 28)

3
CONNECTION DIAGRAMS FOR FIELD VERSIONS
28
OPTIFLUX
www.krohne.com 07/2010 - 7309482600 - AD EX IFC 300 R06 en
3.2 Signal cable B
The signal cable B is a triple screen shielding cable, according to EN 60079-14 clause 12.2
(Intrinsic safety).
Figure 3-2: Construction of signal cable B
1 Stranded drain wire for the inner shield (10), 1.0 mm 2 Cu / AWG 17 (not insulated, bare)
2 Insulated wire (2), 0.5 mm
2 Cu / AWG 20 with stranded drain wire (20) of shield
3 Insulated wire (3), 0.5 mm 2 Cu / AWG 20 with stranded drain wire (30) of shield
4 Outer sheath
5 Insulation layers
6 Stranded drain wire (6) for the outer shield (60), 0.5 mm
2 Cu / AWG 20 (not insulated, bare)