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SI 173O-B
Hazardous area
Zone 21 or
Zone 22
Electronics
compartment
EEx ia
Electronic
insert
Container
hazardous
area
Zone 20
Diagram 1
2
Connection
compartment
5
Electronics
compartment
EEx ia
Electronic
insert
Rod, rope or
coax probe
Container
hazardous
area
Zone 21
Local potential equalisation
Pulscon LTC with HART, PROFIBUS PA or Foundation Fieldbus
EX
EX
Non-hazardous area
Power supply
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