Safety Instructions - PR electronics 5335D Handbuch

SAFETY INSTRUCTIONS

Ex installation:
For safe installation of 5335D in a hazardous area, the following must be
observed. The module must only be installed by qualified personnel who are
familiar with the national and international laws, directives and standards that
apply to this area.
Year of manufacture can be taken from the first two digits in the serial number.
The sensor circuit is not infallibly galvanically isolated from the input
circuit. However, the galvanic isolation between the circuits is capable of
withstanding a test voltage of 500 Vac during 1 minute.
The transmitter must be mounted in an enclosure in order to provide a degree
of ingress protection of at least IP20.
In explosive atmospheres caused by air / dust mixtures:
The transmitter may only be installed in a potentially explosive atmosphere
caused by the presence of combustible dust when mounted in a metal
enclosure form B according to DIN 43729 that is providing a degree of
ingress protection of at least IP 6X in accordance with EN 60529, that is
suitable for the application and is correctly installed.
Cable entries and blanking elements shall be used that are suitable for the
application and correctly installed.
For an ambient temperature ≥ 60°C, heat resistant cables shall be used with a
rating of at least 20 K above the ambient temperature.
The surface temperature of the enclosure is equal to the ambient temperature
plus 20K, for a dust layer with a thickness up to 5 mm.
Special Conditions for Safe Use - 5335A:
For use in potentially explosive atmospheres of flammable gasses, vapours and
mists, the transmitter shall be mounted in an enclosure providing a degree of
ingress protection of at least IP 54 in accordance with EN 60529.
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For use un the presence of combustible dusts, the transmitter shall be mounted
in an enclosure providing a degree of ingress protection of at least IP 6X in
accordance with EN 60529. The surface temperature of the enclosure shall be
determined after installation of the units.
Provisions shall be made to prevent the rated supply voltage being exceeded
by transient disturbances of more than 40%.
Special Conditions for Safe Use - 5335D:
If the enclosure in which the transmitter is mounted is made of aluminium and
installed in Zone 0, 1 or Zone 20, 21 or 22 it shall not contain by weight more
than 6% in total of magnesium and titanium.
The additional enclosure of the apparatus shall be designed and/or installed in
such a way that, even in the event of rare incidents, ignition sources due to
impact and friction sparks are excluded.
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