The equipment with II 1/3 D Ex htc IIIC T140 ° C Da / Dc marking
can contain a ZONE 20 inside and can be used in ZONE 22
The equipment with II 1/2 D Ex h tb IIIC T140 ° C Da / Db marking
can contain a ZONE 20 inside and can be used in ZONE 21 and
ZONE 22
The zones are defined as follows.
ZONE 20: area in which an explosive atmosphere in the form of a
cloud of combustible dust in the air is present permanently or for
long periods or often.
ZONE 21: area in which occasionally during normal activities the
formation of an explosive atmosphere in the form of a cloud of
combustible dust in the air is likely.
ZONE 22: area in which during normal activities the formation of
an explosive atmosphere in the form of a cloud of combustible
dust is not likely and, if it occurs, it is only of short duration.
It is forbidden to use the appliance where there are areas
classified for the presence of gas as ZONE 0, 1 or 2.
The equipment is suitable for operating only with powders
without ignition sources.
Combustible dusts with the following characteristics can be
treated:
Auto - flammability in MIT cloud
°C
> 215
Auto - flammability in LIT layer
°C
> 215
Minimum Ignition Energy (MIE)
at all operating temperatures
mJ
≥ 3
It is forbidden to use the device with hybrid mixtures, explosives
and class St2 and St3 powders, chemically unstable powders.
It is the user's responsibility to ensure that the equipment is used
in accordance with its intended use, in particular that it is used in
areas classified as compatible with those for which the
equipment itself is declared suitable by the manufacturer.
The device is designed to work in standard environmental
conditions:
• Temperature -20 ° C ≤ Tamb ≤ + 40 ° C.
• Atmospheric pr 0.8 / 1.1 bar
The treated product must have a temperature not exceeding
40 ° C.
Содержание A1086
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