DALEMANS D-TEX3F+, Instruction Manual

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DIRECTIVE 2014/34/EU (ATEX)
Danger zones
Zone Definition
0
Zone in which an explosive atmosphere of gas or gas vapours is permanently present
for long periods or regularly.
1
Zone in which an explosive atmosphere of gas or gas vapours is likely to form
occasionally under normal operation.
2 Zone in which an explosive atmosphere of gas or gas vapours is not likely to form
under normal operation or, if this occurs nonetheless, only forms for a short period.
Equipment categories
Category Definition Usage zone(s)
1
Equipment with a “very high” degree of safety
0
2
Equipment with a “high” degree of safety
1 and 2
3
Equipment with a “normal” degree of safety
2
Gas groups
Group
Reference
gas
Definition
I Methane Equipment intended for mines, on the surface or under the surface
IIA Propane
Equipment intended for surface industries other than mines
IIB Ethylene
IIC Hydrogen
Temperature class
The equipment must be chosen such that its surface temperature never reaches the self-ignition
temperature of the gas present. Below are some examples of explosive gases classified according
to their self-ignition temperature. This list is non-exhaustive.
Gas
group
Temperature class and maximum surface temperature of the equipment
T1
450 °C
T2
300 °C
T3
200 °C
T4
135 °C
T5
100 °C
T6
85 °C
IIA
IIB
IIC
Methane
Propane
Toluene
Xylene
Butane
Ethanol
Methanol
Propanol
Kerosene
Nonane
Octane
Pentane
Acetaldehyde
Town gas
Ethylene
oxide
Ethyl ether
Hydrogen Acetylene
Carbon
bisulphide