Loss Of Safety Of Device With Type Of Protection "Intrinsic Safety Ex I; Special Conditions For Safe Use - Siemens SITRANS FSS200 Installation Manual

Safety notes
2.3 Use in hazardous locations
2.3.2

Loss of safety of device with type of protection "Intrinsic safety Ex i"

Loss of safety of device with type of protection "Intrinsic safety Ex i"
Risk of explosion May cause death or serious injury.
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
2.3.3

Special conditions for safe use

Special conditions for safe use
In general, it is required that:
● The terminal space 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.
Must be installed in accordance with Siemens control drawing A5E42071597A.
Laying of cables
Risk of explosion in hazardous areas. May cause death or serious injury.
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.
14
WARNING
circuit.
data (Page 81).
WARNING
FSS200 clamp-on sensors
Installation Manual, 08/2017, A5E36255466-AC