JUMO SafetyM STB Notice De Mise En Service page 81

II (2) G [Ex db Gb] IIC
II (1) G [Ex h Ga] IIC
II (1) D [Ex h Da] IIIC
II (2) G [Ex eb Gb] IIC (
II (2) D [Ex tb Db] IIIC (
II (2) G [Ex db Gb] IIC (
II (2) G [Ex h Gb] IIC ( (
II (2) D [Ex h Db] IIIC ( (
Standard designation according to EN 60079-0
Explosion group II C
Equipment Protection Level:
Gb: for use in zone 1 or 2 for gases
Db: for use in zone 21 or 22 for dust
Standard series designation according to EN 50495
"eb" increased safety for category 2,
"tb" protection with housing for category 2, b: zone 21 or 22 for dust
"db" pressureproof enclosure
„h" constructive safety
Standard designation
Category according to ATEX directive 2014/34/EU
G: explosive atmosphere consisting of gas, vapor or mist
D: explosive atmosphere consisting of dust
Safety devices according to EN 50495
- for category 2 applications for ignition protection type increased safety „e" accord. EN 60079-7
- for category 1 applications for ignition protection type by housing „ta" accord. EN 60079-31
- for category 2 applications for ignition protection type by housing „tb" accord. EN 60079-31
Guidelines designation for device group II (non-firedamp endangered mine workings)
Designation explosionproof device according to ATEX directive 2014/34/EU
1.) The monitored electrical equipment does not represent a potential ignition source during normal operation
suivant EN 50495 et EN 60079-1
suivant EN 50495 et DIN EN ISO 80079-37
gases, low ignition energy such as hydrogen
III C conductive dusts
1)
b: zone 1 or 2 for gas
b = zone 1 or 2 for gas
7 ATEX
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