● Sensor is connected to the potential equalization throughout the hazardous area.
● The device is not opened when energized and when an explosive gas or dust atmosphere
may be present.
Further information and instructions including approval-specific special conditions for safe use
in Ex applications can be found in the certificates on the documentation disk and at the product
web page (
WARNING
Substitution of components
Substitution of components may impair Intrinsic Safety.
WARNING
Laying of cables
Risk of explosion in hazardous areas.
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.
WARNING
Field wiring installation
Ensure that the national requirements of the country in which the devices are installed are met.
Qualified personnel for hazardous area applications
Persons who install, connect, commission, operate, and service the device in a hazardous area
must have the following specific qualifications:
● They are authorized, trained or instructed in operating and maintaining devices and systems
according to the safety regulations for electrical circuits, high pressures, aggressive, and
hazardous media.
● They are authorized, trained, or instructed in carrying out work on electrical circuits for
hazardous systems.
● They are trained or instructed in maintenance and use of appropriate safety equipment
according to the pertinent safety regulations.
Safety notes
2.4 Use in hazardous areas
SITRANS FC330
18
Operating Instructions, 01/2019, A5E44030648-AB