battioni Pagani BLW Série Manuel D'instruction page 18

Supplementary instruction manual
for use in areas at risk of explosion
IIB
- Group:
Group II divisions:
• IIA, a typical gas is propane;
• IIB, a typical gas is ethylene;
Note 1 This division is based on the maximum experimental safety gap (MESG) or the minimum ignition current ratio (MIC ratio)
of the explosive gas atmosphere in which the equipment may be installed. (See IEC 60079-20-1).
Note 2 Equipment marked with IIB is suitable for applications that require Group IIA equipment.
T3
Temperature Class:
Temperature Class
T1
T2
T3
T4
T5
T6
The maximum surface temperature is determined in normal installation and environmental conditions (-20°C and
+40°C) and without dust deposits on the equipment.
During operation, the vacuum/pressure lobe pump must be cleaned because build-ups of dust cannot exceed 5 mm.
Any deviation from these reference conditions can greatly affect heat dissipation and, therefore, the temperature.
Gb
Protection Level:
Relationship between equipment protection levels (EPL) and areas
The equipment protection levels (EPL), as defined by the EN 80079-36 standard, refer to groups of equipment and categories of
similar equipment according to table I.1.
The same applies if a standard refers to the intended use of the equipment in the areas in accordance with the definitions in IEC
60079-10-1 and IEC 60079-10-2.
Table I.1 - Relationship between equipment protection levels (EPLS) and areas
EN 80079-36
EQUIPMENT PROTEC-
TION LEVELS
Ma
Mb
Ga
Gb
Gc
Da
Db
Dc
pag. 18
Maximum Surface Temperature (°C)
Directive 2014/34/EU
GROUP EQUIPMENT GROUP
I
I
II II
III
Ignition T of flammable subs. (°C)
450
300
200
135
100
85
EQUIPMENT CATEGORY
M1
M2
1G
2G
3G
1D
2D
3D
>450
>300
>200
>135
>100
>85
IEC 60079- 10- X
AREAS
NOT APPLICABLE
0
1
2
20
21
22