Installation
FLOWSIC500 · Operating Instructions · 8015391 V2.1 · © SICK AG
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3.4
Electrical installation
3.4.1
Requirements for use in potentially explosive atmospheres
The FLOWSIC500 is suitable for measuring combustible and occasionally ignitable gases
corresponding to zones 1 and 2.
Basic requirements
▸
The documentation for zone categorization in accordance with IEC60079-10 must be
available
▸
The FLOWSIC500 must have been checked for suitability for the actual installation loca-
tion and the Ex marking on the device must match the requirements.
▸
After installation and before initial start-up, the complete equipment and the system
must be inspected in compliance with IEC 60079-17.
The FLOWSIC500 is suitable for use in potentially explosive atmospheres:
ATEX: II 2G Ex ia [ia] IIB T4 Gb
IECEx: Ex ia [ia] IIB T4 Gb
US/C: Class I Division 1, Groups C, D T4, Ex/AEx ia IIB T4 Ga
For a FLOWSIC500 used in potentially explosive atmospheres:
▸
Installation, start-up, maintenance and inspection may only be carried out
by skilled persons having knowledge of the relevant rules and regulations
for potentially explosive atmospheres, especially:
– Ignition protection types
– Installation regulations
– Category classification
▸
Comply with all valid IEC standards.
WARNING:
Risk of explosion
All electrical connections of the FLOWSIC500 are approved for connection to
the certified intrinsically safe power circuits only.
▸
Proof of the intrinsic safety in compliance with IEC 60079-14 must be
presented for interconnection with the associated intrinsically safe equip-
ment.
Otherwise the intrinsic safety of the FLOWSIC500 can be endangered, i.e.
the ignition protection for the FLOWSIC500 can no longer be ensured.
