Piezo_Pneumatics~2001.pdf - Winco

HOERBIGER-ORIGA ValvesEx-Facts and Marking (Europe)EEx ia IIC T4 / T5 / T6EExCertified according to European Standard CENELECHOERBIGER-ORIGA Valves are certified additionelly by the new ATEX 100a-Standard, Directive 94/9/EC,required July1, 2003Explosion Proofedi (a)IICT4/T5/T6Type of Protectioni – Intrinsic Safety (→ Zone 0,1,2)Technically different m – Encapsulation (→ Zone 1,2)principles of protection o – Oil Immersionp – Excess Pressuredia: no ignition if: normal use + 1 fault q – Powder Filledor combination of 2 faults (zone 0, 1, 2) e – Increased Safetyib: no ignition if: normal use + 1 fault (zone 1, 2) d – FlameproofApparatus GroupingTypical Gas Minimum Ignition EnergyDegree of ignition ability IIC Acetylene 20 µJfor different gases IIC Hydrogen 20 µJIIB Ethylene 60 µJIIA propane 180µJTemperature ClassIEC 79-8 Maximum Surface Minimum IgnitionT-Class Temperature Temperature of a gasT1 450 °C > 450 °CT2 300 °C > 300 – ≤ 450 °CT3 200 °C > 200 – ≤ 300 °CHighest permissible T4 135 °C > 135 – ≤ 200 °Csurface temperature of T5 100 °C > 100 – ≤ 135 °Can equipment part T6 85 °C > 85 – ≤ 100 °CArea ClassificationZone 0 (gases) danger present continuosly (> 1000 hours per year)Zone 1 (gases) danger present intermittently (10 – 1000 hours per year)Zone 2 (gases) danger present abnormally (0 – 10 hours per year)Amount of probability of existing danger, fixes the protection type.(Compatible HOERBIGER-ORIGA Valves specifications are marks red)4