Størrelse

Beskyttelseskonseptet

PDFSkriv utE-post

Skrevet av Administrator torsdag 04. februar 2010 15:57

            Gas group  
            Temperature  
            Classification  
Typical_material Apparatus_group   Max._surface_temp T_Class   ATEX  
Methane I
Mining (M1/M2)
  
450°C
T1
      
Propane
IIA
  
300°C
T2
  CE_Marking_Directive Basic_requirements
Ethylene
IIB Surface
  
200°C
T3
   Low Voltage Directive Electrical safety of equipment, voltage ranges 50-1000AC, 75-1500 DC
Hydrogen

 
IC Applications
 
135°C
T4
   EMC Directive Electromagnetic emissions and immunity
Acetylene
IIC
  
100°C
T5
   Machinery Directive Mechanical and electrical safety
All Gases
II
  
85°C
T6
   Atex Directive Hazardous Area Equipment (mandatory form 1st July 2003 Currently accepted


Protection_Concepts Symbol
_Zone_
__Standard__
 _________How_it_works_________
Category
Increased Safety Ex e
1 & 2
EN 50019
 No arcs, sparks or hot surfaces
2
Non-sparking Ex nA
2
EN 50021
3
Flameproof Ex d
1 & 2
EN 50018
 Contain the explosion and quench flame
2
Enclosed Break Ex nW
2
EN 50021
3
Quartz/Sand Filled Ex q
1 & 2
EN 50017
2
Intrinsic Safety Ex ia

Ex ib
0,1 & 2

1 & 2
EN 50020

EN 50039

 Limit energy of sparks; limit the temperature
1

2

3
Energy Limitation Ex nL
2
EN 50021
Pressurised

 

 Ex p
1 & 2
EN 50016
Keep the flammable gas away from any hot surfaces and ignition Capable equipment
2
Simplified Pressurisation Ex nP
2
EN 50021
3
Encapsulation Ex m
1 & 2
EN 50028
2
Oil Immersion Ex o
1 & 2
EN 50015
2
Restricted breathing Ex nR
2
EN 50021
3
Special Ex s
0*,1&2
EHSR (ATEX)
Any Proven Method
1,2&3
      * Label must indicate Zone 0  
  Classification
Criteria For Zone
 ATEX_Marking
  Zone 0 Flammable material always present or for long periods (e.g.1000 hours or more per year) G Category 1 Equipment
  Zone 20 D
  Zone 1 Flammable material present in normal operation (e.g. 10-1000 hours/year) G Category 2 Equipment
  Zone 21 D
  Zone 2 Flammable material present for short periods only (e.g. less than 10 hours/year) G Category 3 Equipment
  Zone 22 D
Neste >

Produkt Kategorier

Informasjon

Exnor AS
Leikvegen 7
7550 Hommelvik
Org. nr. NA 985 882 398 MVA
Tel: +47 73 97 16 77
Faks: +47 73 97 16 87
E-post: post@exnor.no