Special Conditions For Safe Use Fc430 Field Mount (Compact/Remote) - Siemens SITRANS FC430 Operating Instructions Manual

Safety notes
2.4 Use in hazardous areas
Loss of safety of device with type of protection "Intrinsic safety Ex i"
If the device has already been operated in non-intrinsically safe circuits or the electrical
specifications have not been observed, the safety of the device is no longer ensured for use
in hazardous areas. There is a risk of explosion.
● Connect the device with type of protection "Intrinsic safety" solely to an intrinsically safe
● Observe the specifications for the electrical data on the certificate and/or in Technical
2.4.1

Special conditions for safe use FC430 field mount (compact/remote)

Special conditions for safe use
In general, it is required that:
● The transmitter electronic compartment shall not be opened when energized and when an
explosive gas or dust atmosphere may be present.
● The terminal compartment may be opened when an explosive gas or dust atmosphere may
be present at any time. Access power terminals by lifting the cover only when de-energized.
● Appropriate cable connectors are used.
● Substitution of components may impair Intrinsic Safety.
● Sensor and transmitter are connected to the potential equalization throughout the
hazardous area.
● EN/IEC 60079-14 is considered for installation in hazardous areas.
Further information and instructions including approval-specific special conditions for safe use
in Ex applications can be found in the certificates on the accompanying literature CD and at
the product web page (www.siemens.com/FC430).
Laying of cables
Explosion hazard
Cable for use in hazardous areas must satisfy the requirements for having a proof voltage of
at least 500 V AC applied between the conductor/ground, conductor/shield and shield/ground.
Connect the devices that are operated in hazardous areas as per the stipulations applicable
in the country of operation.
18
WARNING
circuit.
data (Page 229).
WARNING
FC430 (From firmware 4.0)
Operating Instructions, 06/2017, A5E39789392-AA