Šta znači Ex d IIB T4?

Ex = explosion protected. d = flameproof enclosure (IEC 60079-1). IIB = Gas Group IIB (e.g. ethylene). T4 = Temperature Class T4 (max surface temp 135°C). This equipment is suitable for Zone 1 and Zone 2 hazardous areas.

Koji su glavni tipovi Ex zaštite?

Common types: d = flameproof, e = increased safety, i = intrinsic safety (ia/ib/ic), p = pressurized, n = non-sparking, m = encapsulation, o = oil immersion, q = powder filling, t = protection by enclosure (dust).

Koje su grupe gasa I, IIA, IIB, IIC?

Group I = Mining (methane). Group IIA = Propane, acetone, etc. Group IIB = Ethylene, hydrogen sulfide. Group IIC = Hydrogen, acetylene, carbon disulfide. IIC is the most stringent — equipment rated IIC can be used in IIA and IIB.

Koje su temperaturne klase T1 do T6?

Temperature classes define the max surface temperature: T1=450°C, T2=300°C, T3=200°C, T4=135°C, T5=100°C, T6=85°C. The class must be lower than the auto-ignition temperature of the gas present.

Šta je nivo zaštite opreme (EPL)?

EPL indicates the level of protection: Ga/Da = very high (Zone 0/20), Gb/Db = high (Zone 1/21), Gc/Dc = enhanced (Zone 2/22). 'G' is for gas, 'D' is for dust. EPL was introduced in IEC 60079-0 Edition 6.

Besplatan Inženjerski Alat

Dekoder Ex Oznake

Unesite bilo koji IEC 60079 / ATEX Ex string za dekodiranje tipa zaštite, grupe gasa, temperaturne klase, EPL i pogodnosti zone.

IEC 60079ATEXZone 0/1/2

Dešifrovana oznaka

Vrste zaštite

Code	Method	IEC Standard	Typical Zone
d	Vatrosigurna kućišta	IEC 60079-1	Zone 1, 2
e	Povećana sigurnost	IEC 60079-7	Zone 1, 2
ia	Zaštita sopstvenom sigurnošću (nivo a)	IEC 60079-11	Zone 0, 1, 2
ib	Zaštita sopstvenom sigurnošću (nivo b)	IEC 60079-11	Zone 1, 2
ic	Zaštita sopstvenom sigurnošću (nivo c)	IEC 60079-11	Zone 2
p/px/py/pz	Kućišta pod pritiskom	IEC 60079-2	Zone 1, 2
m/ma/mb	Encapsulation	IEC 60079-18	Zone 0, 1, 2
nA/nC/nR	Bez stvaranja iskri / Tip n	IEC 60079-15	Zone 2
o	Oil immersion	IEC 60079-6	Zone 1, 2
q	Powder filling	IEC 60079-5	Zone 1, 2
t/ta/tb/tc	Zaštita kućištem (od prašine)	IEC 60079-31	Zone 20/21/22

Temperaturne klase

Class	Maksilmalna površinska temperatura (°C)	Typical Gases
T1	450	Vodonik, metan, propan
T2	300	Etanol, butan, aceton
T3	200	Benzin, sumporovodik, dizel
T4	135	Acetaldehid, dietilni etar
T5	100	—
T6	85	Ugljikov disulfid

Ex Marking Decoder | IEC 60079 | ATEX zaštita od eksplozije

Published by Nikolai Shelkovenko on Februar 15, 2026 Februar 15, 2026

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