KROHNE OPTIFLEX 2200 IECEX - Manual (Page 26)

3
ELECTRICAL CONNECTIONS
26
OPTIFLEX 2200 C/F
www.krohne.com 04/2013 - 4000861902 - AD IECEX OPTIFLEX2200 R02 en
Remote (Field) version Remote (Field) version Remote (Field) version Remote (Field) version
The communication cable (between the converter electronics and the probe end electronics) is
supplied by the manufacturer for IECEx applications. The communication cable cannot be
changed by the user. For more data, speak to the supplier.
Level transmitter with the 4...20 mA passive - HART output option
Figure 3-9: Electrical schematic for Ex d ia / Ex ia tb-approved equipment (with galvanic isolation)
Figure 3-10: Electrical schematic for Ex d ia / Ex ia tb-approved equipment (without galvanic isolation)
1 Galvanically-isolated power supply
2 Power supply
3 Resistor for HART
® communication
4 Non-Ex zone
5 Ex zone
6 |U| < 13 V
7 Grounding wire - if the electrical cable is shielded (braided wire etc.)
Level transmitter with the FOUNDATION™ fieldbus or PROFIBUS PA output option
Figure 3-11: Electrical schematic for Ex d ia / Ex ia tb-approved equipment with the FOUNDATION™ fieldbus or
PROFIBUS PA output option
1 Approved barrier with entity parameters or FISCO power supply. For more data, refer to Maximum intrinsically-safe
values for the electrical circuit on page 22.
2 Non-Ex zone
3 Ex zone
4 Grounding wire. NOTE: Shielded electrical cable is mandatory for fieldbus output options.