Identification of explosion proof utilities | Der Marktführer für Reinigungstechnik im explosionsgefährdeten Bereich | Krahnen GmbH

Kennzeichnung explosionsgeschützter Betriebsmittel

CE	0081		II	2 G/D	EEx	c	IIC	T3
1	2	3	4	5	6	7	8	9

To identify after ATEX 95 (CE communauté européenne) The supplier is been obliged to keep the European rules and regulations

Number of the official control department / named office

specific signature of explosion protection

terms and conditions in explosion endangered zones
Flammable materials	Temporally behaviour of flammable materials in Ex-zones	Classification of explosion endangered zones	Required marks of the applicable utilities
Flammable materials	Temporally behaviour of flammable materials in Ex-zones	Classification of explosion endangered zones	4 equipment group	5 category of equipment
Gas Vapours	Existing constantly, on long term, often	Zone 0	II	1G
	occur occasionally	Zone 1	II	2G or 1G
	occur probably not, if yes only seldom or for short time	Zone 2	II	3G or 2G or 1G
Dusts	Constantly on long term, often	Zone 20	II	1D
	occur occasionally	Zone 21	II	2D or 1D
	occur probably not from turbulent dust, if yes only seldom or for short time	Zone 22	II	3D or 2D or 1D
Methane dust		Mining	I	M1
Methane dust		Mining	I	M2 or M1

Zone 0 is normally the internal of a tank; Zone 20 the internal of a silo)

Identification

E Certification after CENELEC (electrical explosion prevention) on the basis of the European norm

Ex explosion proof

Identification	Type of protection	For electrical equipment	For none electrical equipment	Identification	Type of protection	For electrical equipment	For none electrical equipment
b	Control of the Ignition source		X	m	Cast iron housing	X
c	Protection due to safety construction		X	nA	No transmission	N
d	Pressure resistant casting	X	X	nC	Utilities which transmit (approved protection)	X
e	High security	X		nL	Limited energy	X
fr	Protection due to vapour glogging casts		X	nP	Simplified over pressure casting	X
g	Self protection		X	nR	Vapour safe housing
k	Liquid casting		X	o	Oil casting	X
ia	Self protection for zone 0	X		p	Over pressure casting	X	X
ib	Self protection for zone 1	X		q	Sand casting	X

Gas groups

I Methane

II all gases

IIA propane & similar

IIB Ethylene & similar

IIC hydrogen & Acetylene

Temperature classes (for electrical and mechanical utilities) maximum surface temperature

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