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コントロールユニット Formula Air BADA000013のPDF メンテナンス・マニュアルをオンラインで閲覧またはダウンロードできます。Formula Air BADA000013 18 ページ。 Atex non-return valve
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4.1.2 Dangerous areas classification
The ATEX 2014/34/EU Directive classifies the protection system (in this case the non‐return valve)
into 3 categories, with different protection levels, guaranteed to the related protection.
Protection Level
Very High
4.2
ATEX code description
The non‐return valve is marked according the European Directive 2014/34/EU:
In which:
CE
:
CE‐marking and number of the noticed (monitoring) body (1026) (not for equipment
category 3)
Ex
:
Explosive protection symbol (ATEX)
II
:
Equipment group II for use above ground
1
:
Equipment category (Category 2)
2
:
Equipment category (Category 2)
D
:
Explosive atmosphere (dust)
Ex
:
Explosive protection marking
h
:
Type of protection
IIIB
:
Equipment group (Electrical apparatus group III, subgroup IIIB (non‐conductive dust),
intended for use in areas where an explosive dust atmosphere is to be expected, other than mines
susceptible to firedamp)
T85
0
:
Surface temperature
Da
:
Equipment Protection Level (EPL Da; equipment with very high protection level)
St 1
:
Suitable as explosion isolation flap valve for dust explosion class St 1
Ta
:
Allowed ambient temperature range
High
Normal
II 1D/2D Ex h IIIB T85
O
C Da/Db
II D St 1
Ta= ‐20
O
C to +60
O
C
Plant
Dust Category
1D (zone 20)
2D (zone 21)
3D (zone 22)
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