NW101-EN

3 Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice ATEX Overview Directive 2014/34/EU (Manufacturer Directive) applies to equipment and protective systems (group, category, assessment procedures, marking) whereas ATEXDirective 99/92/CE (User Directive) provides for a classification of the places where explosive atmospheres may occur The products shall be provide by the appropriate identification label, which includes, in addition to the CE marking, the specific marking of explosive protection (Epsilon-x, in the hexagon) followed by the group (I or II) and category; for group II, the letter G is added for equipment for Gas while equipment for dust is identified by the letter D (Dust). Other information usually located in marking plate are: • Gas/dust subgroup • Type of protection • Temperature class (Gas) and max surface temperature (Dust) • Equipment protection level (EPL) ATEX product ATEX Marking (zoning) and define protection level of the equipment and protective systems (groups and categories) shall be used in each zone. Hazardous locations are classified, by the User, in zones based on frequency and duration of the occurrence of explosive atmosphere. Correlation between zone , category and EPL ATEX Directive 2014/34 /UE Correlation between max surface temperature and temperature class of equipment GAS Zone 0 A place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is present continuously or for long periods or frequently. Zone 1 A place in which an explosive atmosphere consisting of a mixture with air or flammable substances in the form of gas, vapour or mist is likely to occur in normal operation occasionally. Zone 2 A place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is not likely to occur in normal operation but, if it does occur, will persist for a short period only. DUST Zone 20 A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is present continuously, or for long periods or frequently. Zone 21 A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is likely to occur in normal operation occasionally. Zone 22 A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is not likely to occur in normal operation but, if it does occur, will persist for a short period only. Zone Category EPL 0 1G Ga 1 2G Gb 2 3G Gc 20 1D Da 21 2D Db 22 3D Dc Non - Electrical products (according EN 13463-X) II 2 GD c T4 T135°C X II Group 2 Category G, D Gas, Dust c Constructional safety “c” T4 Temperature class T135°C Maximum surface temperature X Special condition for safe use (see instruction) Equipment Surface temperature Ts Class t. Ts < 85°C T6 85°C < Ts <100°C T5 100°C < Ts < 135°C T4 135°C < Ts < 200°C T3 200°C < Ts < 300°C T2 300°C < Ts < 450°C T1 Non - Electrical products (according EN ISO 80079-36 & 80079-37 ) Mandatory from 10/2019 II 2 G Ex h T4 Gb X II 2 D Ex h T135°C Db X II Group 2 Category G, D Gas, Dust Ex h Protection for non - electrical equipment T4 Temperature class T135°C Maximum surface temperature Gb, Db EPL X Special condition for safe use (see instruction) Electrical products (according EN 60079-X) xxxx xxxx N° of Ex Notified Body (only category 2 and 1) for quality assurance notification II Group 2 Category G, D Gas, Dust Ex ib Intrinsically safe “ib” Ex tb Dust tight enclosure “tb” T4 Temperature class T135°C Maximum surface temperature Gb, Db EPL X Special condition for safe use (see instruction) II 2 G Ex ib T4 Gb X II 2 D Ex tb T135°C Db X