3
ELECTRICAL CONNECTIONS
20
OPTIWAVE X500
www.krohne.com
06/2017 - 4005809801 - AD ATEX OPTIWAVE x500 R01 en
3.5.4 Electrical schematic
Figure 3-2: Electrical schematic for Ex i-approved equipment
1
Intrinsically-safe power supply
2
Non-Ex zone
3
Ex zone
4
Resistor for HART
®
communication
5
Grounding wire
–
if the electrical wire is shielded (braided wire etc.)
INFORMATION!
For applications where equipment category II 2 G and EPL Gb are necessary, you must connect
the device to an intrinsically-safe circuit with protection concept "ib". If the device is connected
to an intrinsically-safe circuit with protection concept "ia", the device operates with a higher
level of safety.
