PR electronics 5437 Manuel De Produit page 36

For installation in a potentialy explosive gas atmosphere, the following
instructions apply:
The transmitter shall be installed in an enclosure providing a degree of protection of not
less than IP54 in accordance with IEC 60079-0, which is suitable for the application
and correctly installed e.g. in an enclosure that is in type of protection Ex n or Ex e.
Additionally, the area inside the enclosure shall be pollution degree 2 or better as
defined in IEC60664-1.
Cable entry devices and blanking elements shall fulfill the same requirements.
For installation in a potentially explosive dust atmposphere, the following
instructions apply:
For EPL Dc, the surface temperature "T" of the enclosure, for a dust layer with a
maximum thickness of 5 mm, is the ambient temperature +20 K.
If the transmitter is supplied with an intrinsically safe signal "ic" and interfaces an
intrinsically safe signal "ic" (e.g. a passive device) , the transmitter shall be mounted in
a metal enclosure form B according to DIN 43729 or equivalent that provides a degree
of protection of at least IP54 according to IEC60079-0.
Cable entry devices and blanking elements shall fulfill the same requirements.
If the transmitter is supplied with an non-sparking signal "nA", or interfaces a non
sparking signal, the transmitter shall be mounted in an enclosure, providing a degree of
protection of at least IP54 according to IEC60079-0, and in conformance with type of
protection Ex tD, or Ex t.
Cable entry devices and blanking elements shall fulfill the same requirements.
36 5437V103-FR