§146 補足的／特別なマーキング

It is the intention of Directive 2014/34/EU that the design of the specific marking of explosion protection ("epsilon-x", or "the hexagon") follows the design, as specified in the old Directive 84/47/EEC (see chapter “Specific Marking Of Explosion Protection”). This marking has to be followed by the symbol of the group and category (on devices according to Article 1(1)(b) of Directive 2014/34/EU the category should be indicated in brackets) and, relating to group II, the letter ‘G’ (concerning explosive atmospheres caused by gases, vapours or mists) and/or D (concerning explosive atmospheres caused by dust).

User instructions shall explain in detail the meaning of the marking on the product. However it is recommended to use the format provided in the following examples, as in Tables 6 and 7, where

".. /.. " means the product has two different categories, and ".. -.. " means that a part of the product is not conforming to the Directive and not intended to be used in a potentially explosive atmosphere.

Moreover, devices according to Article 1(1)(b) of the Directive, and separately placed on the market, shall be marked with the category of the equipment under control in round brackets, and such devices which contain an own potential ignition source intended for use in a potential explosive atmosphere shall be marked as equipment according to Annex II clause 1.0.5.

Table 6: examples for marking of equipment

I M2 Mining products, group I, category M2

II 1 G Non-mining products, group II, category 1 for use in gas/vapour/mist atmospheres

II 1 D Non-mining products, group II, category 1 for use in dust atmospheres

Protective system, for use in gas/vapour/mist/dust atmospheres

II (1) G D

Device according to Article 1(1)(b) of Directive 2014/34/EU in the non-hazardous area with intrinsically safe circuits of category "Ex ia", which can be connected e.g. to category 1 equipment

II 2 GD Category 2 equipment for use in potentially explosive atmosphere containing gases or dust

II (2)/2 (1)/1 G

An assembly, such as a gas detection system with more than one detection head, that is partly category 1 and partly category 2 formed by a safety device and an equipment. The safety device is intended for use outside the hazardous area and the equipment is intended for use inside hazardous area

II 2(1) G Category 2 equipment containing a safety device for a category 1 equipment

II 2(1) GD Same equipment for gas or dust potentially explosive atmospheres

II (2) G (1) G A safety device alone which ensures the safety against explosion for category 1 equipment and for another category 2 equipment

II 3/3 D A blower exhausting out of zone 22 and to be installed in zone 22

Table 7: examples for marking of equipment having different categories

II 1/2 G Level gauge installed in the tank wall between zone 0 and zone 1

II (2) 3 G An electrical field bus device affecting category 2 equipment installed in zone 2

II 2/- G

A ventilator exhausting out of zone 1 but to be installed outside potentially explosive atmospheres. The Directive has no provisions for marking in case of installation outside potentially explosive atmospheres

II 2/3 G A ventilator extracting out of zone 1 but to be installed in zone 2

II 3/- D

A screw conveyor conveying dust out of a zone 22 but installed outside potentially explosive atmospheres. The Directive has no provisions for marking in case of installation outside potentially explosive atmospheres

II -/2 D Blower conveying no explosive atmosphere but to be installed in zone 21

Note: In the above examples, where a zone is indicated, the "normal" correspondence between zone and category is assumed according to the ATEX "workplace" Directive 1999/92/EC, i.e.

category 1 - zone 0 or 20

category 2 - zone 1 or 21

category 3 - zone 2 or 22

All products must be marked with the registered name (or registered trade mark) and address of the manufacturer, designation of series or type, serial number (if any) and the year of construction. The year of construction and serial number may be combined or in a conventional coded format, in which case the explanation of the code shall be given in the instructions accompanying the product.

Where more than one category is given in the marking, the product must be accompanied with written information explaining the different categories, where they apply, and the consequences for the intended use.

Where a product is covered by more than one "New Approach" / New Legislative Framework legal act (Union Regulation or Directive), CE marking denotes compliance with the appropriate provisions of all relevant directives. However, where one or more of these directives are in their transitional period and, as a consequence, allow the manufacturer to choose which arrangements to apply, the CE marking indicates conformity only to those directives where application is mandatory and others which are so applied. In the case of these latter directives particulars must be given in the documents, notices or instructions accompanying the product or, where appropriate, on the data plate.