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OPTIFLEX 2200
Figure 3-4: Ex d / Ex t applications: Terminals for the equipotential bonding system
1 Ex i applications:
Ex i applications: Terminal at the bottom of the housing
Ex i applications:
Ex i applications:
2 Ex d / Ex t applications:
Ex d / Ex t applications: Terminal in the Ex d / Ex t compartment
Ex d / Ex t applications:
Ex d / Ex t applications:
3.5 Ex ia equipment
3.5.1 How to connect the electrical cables
Cable entries are supplied on customer demand. If you supply the cable entries, this part must
have a degree of ingress protection IP≥6x (EN 60529).
• Use the electrical connection procedure in the Handbook.
• If possible, use galvanically-isolated equipment.
• Supply the Ex i equipment connected to the device. Use only certified intrinsically-safe
equipment.
• Connect only to separate certified, intrinsically-safe circuits. Make sure that the electrical
circuit characteristics are not more than the values that follow.
• Do not remove more than 6 mm / 0.2¨ of insulation from the wire.
3.5.2 Maximum intrinsically-safe values for the electrical circuit
≤30 V
• U
i
≤300 mA
• I
i
≤1 W
• P
i
• C
=30 nF
i
• L
=30 µH
i
3.5.3 Supply voltage
Current output terminal
1 For a current output of 22 mA
06/2012 - 4000861601 - AD ATEX OPTIFLEX 2200 R01 en
ELECTRICAL CONNECTIONS
Minimum voltage at output
terminal [VDC]
www.krohne.com
Maximum voltage at output
terminal [VDC]
12
1
3
30
1
17
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