Siemens SITRANS FS230 Compact Operating Instructions page 27

Improper laying of shielded cables
Risk of explosion through compensating currents between hazardous area and the
non‑hazardous area.
● Shielded cables that cross into hazardous areas should be grounded only at one end.
● If grounding is required at both ends, use an equipotential bonding conductor.
Insufficient isolation of intrinsically safe and non-intrinsically safe circuits
Risk of explosion in hazardous areas.
● When connecting intrinsically safe and non‑intrinsically safe circuits ensure that isolation
● Ensure that you observe the device approvals applicable in your country.
Connecting device in energized state
Risk of explosion in hazardous areas.
● Connect devices in hazardous areas only in a de-energized state.
Exceptions:
● Devices having the type of protection "Intrinsic safety Ex i" may also be connected in
● Exceptions for type of protection "Increased safety ec" (Zone 2) are regulated in the
Note
Electromagnetic compatibility (EMC)
You can use this device in industrial environments, households and small businesses.
For metal housings there is an increased electromagnetic compatibility compared to high-
frequency radiation. This protection can be increased by grounding the housing, see Technical
data (Page 61).
SITRANS FS230
Compact Operating Instructions, 12/2019, A5E38755607-AB
WARNING
WARNING
is carried out properly in accordance with local regulations for example IEC 60079-14.
WARNING
energized state in hazardous areas.
relevant certificate.
Connecting
4.1 Basic safety notes
27