GENERAL CATALOGUE API

Introduction 2014/34/EU ATEX Directive

Classification and labeling of areas at risk of explosion

Subdivision and differentiation of gases, mists and steams

Flammable subjects

Hazardous environments (Presence of Potentially Explosive Atomospheres)

Explosion risk areas (Partition)

Device classification

Equipment Protection Level (EPL)

Explosion group Most common gases in reference to explosion group and temperature classes

Group Category

Continuously, for long periods or frequently

Ammonia Methane Ethane Propane

Zone 0

II

Ethanol Cyclohex. n-Butane

Gasoline Diesel n-Hexane Ethylene glycol Hydrogen sulphide

IIA

Acetaldeh.

Gases Steams Mists

Occasionally

Zone 1

II

1G

Ga

IIB

2G

Gb

Rarely or for very short periods Continuously, for long periods or frequently

Zone 2

II

3G

Gc

Ethylene Ethylene oxide

Smog Acrylic Nitrile

IIC

Ethyl ether

Zone 20

II

Dusts

Occasionally

Zone 21

II

1D

Da

2D

Db

Coal hydrogen Acetylene

Disulfide

Rarely or for very short periods

Zone 22

II

3D

Dc

T1 < 450°C T2 < 300°C T3 < 200°C T4 < 135°C T5 < 100°C T6 < 85°C

Marking

Community mark of conformity to safety requirements

Specific marking for protection from explosions

I I 2G Ex i a I IC T6 Gb I I 2D Ex t b I I IC T80°C Db X I P 6 5

-

-

Volatile combustible substances (fibers) Non-conductive powders Conductive powders

IIIA

b 1 c 2 b 1 c 2 - -

Containment

Explosion proof Ex d

EN60079-1

0 not protected 0 not protected

IIIB

IIIC

EN60079-7

Prevention Increased Safety Ex e

1 vertical rain

1 solids >50mm

a 0, 20 b 1, 21 c 2, 22

Prevention Intrinsic Safety Ex i

EN60079-11

2 cross rain (up to 15°)

2 solids >12,5mm

Group

Classification

x y z

-

Segregation Pressurization Ex p

1, 21 2, 22

EN60079-2

3 solids >2,5mm

3 cross rain (fino a 60°)

Dust classification

a 0, 20 b 1, 21 c 2, 22

splashing water from every direction

Segregation Encapsulation Ex m

EN60079-18

Electric

4 solids >1mm

4

-

-

dusts (limited access)

Segregation Oil immersion Ex o

b 1 c 2 1 b 2 - -

EN60079-6

5 water sprays from all direction

5

high pressure water sprays from all directions

dusts (full protection)

Segregation Sand filling

Ex q

EN60079-5

6

6

A C R

Prevention Containment Segregation

temporary immersion (max.1 m for 30')

Ignition proof

Ex n

2

EN60079-15

7 -

7

a 20 b 21 c 22

continuous immersion (>1 m for 60')

EN60079-31

Segregation Dustproof

Ex t

8 -

8

0, 20 1, 21 2, 22 0, 20 1, 21 2, 22 0, 20 1, 21 2, 22 Use zone

Prevention Containment Prevention Containment Prevention Containment Segregation

Control of ignition sources

c

No limitations

-

Solid and dust protection

Liquids protections

Constructive safety

Some conditions must be met To be used only in a complete system

Ex h

Mechanical

b

EN80079-37

X

IP class protection

Liquid immersion

k

U

Device Protection principle

Protection type Marking

Symbol

Standard

Information

Suffix

Principle and type of protection

Additional information

III.2