Issue link: https://onenorgren.uberflip.com/i/552086
7 For further information www.norgren.com/us TEMPERATURE CLASS (GASES) TEMPERATURE CLASS (GASES) MAX. SURFACE TEMPERATURE OF THE EQUIPMENT PERMISSIBLE TEMPERATURE CLASSES OF THE EQUIPMENT EXAMPLE T1 450°C T1 to T6 town gas T2 300°C T2 to T6 ethylene T3 200°C T3 to T6 gasoline fuels T4 135°C T4 to T6 acetaldehyde T5 100°C T5 to T6 T6 85°C T6 carbon disulfide EXPLOSION GROUP MARKING EXAMPLE PERMISSIBLE EQUIPMENT GROUP IIA propane IIA or IIB or IIC IIB ethylene IIB or IIC IIC hydrogen IIC 5 0044 x II 2G Ex d IIB T4 Gb TUV 06 ATEX 1234 U NOTIFIED BODY FOR THE EQUIPMENT APPROVAL SHORT NAME CODE NUMBER COUNTRY TÜV NORD CERT GmbH TÜV 0044 Germany INSTITU NATIONAL DE L´ENVIRONNEMENT INDUSTRIEL ET DES RISQUES INERIS 0080 France Physikalisch Technische Bundesanstalt PTB 0102 Germany TÜV SÜD Product Service GmbH TPS 0123 Germany DEKRA EXAM GmbH BVS 0158 Germany DEKRA Certification B.V. DEKRA/KEMA 0344 Netherlands SIRA CERTIFICATION SERVICE SIRA 0518 UK SGS BASEEFA LIMITED BASEEFA 1180 UK RESTRICTION FOR USING APPARATUS REQUIREMENTS MARKING without restriction – special condition may be noted X Ex-component, which is not intended to be used alone and requires additional certification. CE-Conformity is declared by the manufacturer if the part is fitted into a complete equipment. U II 2D Ex tb IIIC T 90°C Db TYPE OF PROTECTION MARKING MAY BE USED IN ZONE STANDARD Flameproof enclosures Ex d 1 or 2 IEC EN 60079-1 Increased safety Ex e 1 or 2 IEC EN 60079-7 Intrinsic safety Ex ia 0 or 1 or 2or 20 or 21 or 22 IEC EN 60079-11 Ex ib 1 or 2 or 21 or 22 Ex ic 2 or 22 Encapsulation Ex ma 0 or 1 or 2or 20 or 21 or 22 IEC EN 60079-18 Ex mb 1 or 2 or 21 or 22 Ex mc 2 or 22 „n" type of protection Ex n 2 or 22 IEC EN 60079-15 Protection by enclosure Ex ta 20 or 21 or 22 IEC EN 60079-31 Ex tb 21 or 22 Ex tc 22 EXPLOSION GROUP (DUSTS) Permissible equipment group MARKING Type of Dust Example IIIA Combustible flyings Cotton IIIA or IIIB or IIIC IIIB Non-conductive dust Grain IIB or IIIC IIIC Conductive dust Aluminum dust IIIC Max. surface temperature of the equipment In dust atmospheres