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About this product
Bosch Rexroth AG
, Manifold block type AGEV1-48404-AA/HM/L01H01-XC, RE 62272-B/03.19
The classification is based on the maximum gap width determined in experiments or
on the minimum ignition current ratio for the explosive atmosphere in which
equipment may be installed (see IEC 60079-20-1).
Explosion group IIA contains the less hazardous substances, explosion group IIC the
most hazardous substances. Products intended for a particular explosion group may
always also be used in less dangerous zones.
Tabelle 6: Examples of the classification of gasses, mists and steams into explosion groups
Explosion group
Examples of gasses, mists and vapors
Hazardousness
IIA
Acetone, ammonia, gasoline, benzene, carbon oxide,
ethanol, methane, hydrogen sulfide, propane
Medium
IIB
Ethylene, city gas, acetaldehyde
High
IIC
Hydrogen, carbon disulfide, acetylene
Very high
Please note that in areas which are potentially explosive due to explosive gasses,
mists or vapors (zone 0, 1, 2 for which equipment group II, categories 1G, 2G and
3G are provided), the maximum surface temperature of the manifold block must in
addition be below the ignition temperature of the surrounding explosive gas, mist or
vapor.
Based on their maximum surface temperature, these hydraulic products are
classified according to EN 80079-36
and EN 60079-0 into temperature classes T1
to T6. With hydraulic products of equipment group II and in categories 1G, 2G and
3G, the temperature class is an integral part of the explosion protection mark
.
It
provides information on the suitability of the hydraulic product for use in a particular
potentially explosive atmosphere due to explosive gasses, mists or vapors.
Tabelle 7: Temperature classes for equipment group II
Temperature class
Permissible maximum surface temperature
T1
450°C
T2
300°C
T3
200°C
T4
135°C
T5
100°C
T6
85°C
The type of protection describes the kind of measures taken to prevent the ignition
of a surrounding explosive atmosphere.
Classification of gasses,
mists and vapors into
explosion groups
Temperature classes for
equipment groups II
Type of protection