KROHNE OPTIWAVE 7300 C Handbook page 92

ATEX: SUPPLEMENTARY INSTRUCTIONS
7
Electrical schema
CAUTION!
Make sure that you connect the load resistor to the positive side.
Electrical schema for Ex d [ia]-approved equipment (with galvanic isolation)
Figure 7-9:
Electrical schema for Ex d [ia]-approved equipment (without galvanic isolation)
Figure 7-10:
Galvanically-isolated power supply (use a second power supply for optional terminal 2)
1
Power supply (use a second power supply for optional terminal 2)
2
Resistor for HART
3
Non-Ex zone
4
Ex zone
5
6 |U| < 5 V
92
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1
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communication
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4
6
6
01/2008 • 4000172401 - HB OPTIWAVE 7300 R03 en
OPTIWAVE 7300 C