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ADDENDUM FOR "EX SAFETY" ASPECTS AND "IP" PROTECTION
(EUROPE)
According to ATEX Directive (European Directive 94/9/EC of 23 March 1994) and relative European Standards which can
assure compliance with Essential Safety Requirements, i.e., EN 50014 (General requirements) EN 50018 (Flameproof enclosures
“d”) EN 50020 (Intrinsic safety “i”) EN 50284 (Equipments, group II, category 1G) EN 50281 (Apparatus for use with combustible
dusts), the pressure transmitters of the 600T EN SERIES have been certified for the following group, categories, media of
dangerous atmosphere, temperature classes, types of protection. Examples of application are also shown below by simple
sketches.
a) Certificate ATEX II 1G DT50
°
C, EEx ia IIC T5 (-40
°
C
≤
Ta
≤
+40
°
C)
DT95
°
C, EEx ia IIC T4 (-40
°
C
≤
Ta
≤
+85
°
C)
BASEEFA certificate number BAS 99ATEX 1180
The meaning of ATEX code is as follows:
II :
Group for surface areas (not mines)
1 :
Category
G :
Gas (dangerous media)
D :
Dust (dangerous media)
T50
°
C:Maximum surface temperature of the transmitter enclosure with a Ta (ambient temperature)
+40
°
C for Dust (not Gas) with a dust layer up to 50 mm depth.
T95
°
C: As before for Dust for a Ta +85
°
C
(Note: the number close to the CE marking of the transmitter safety label identifies the Notified Body which
carries out the surveillance for the production of the transmitter)
The other marking refers to the protection type used according to relevant EN standards:
EEx ia :
Intrinsic safety, protection level “a”
IIC :
Gas group
T5 :
Temperature class of the transmitter (which corresponds to 100
°
C max)
with a Ta (ambient temperature) +40
°
C
T4 :
Temperature class of the transmitter (which corresponds to 135
°
C max)
with a Ta (ambient temperature) +85
°
C
About the applications, this transmitter can be used in “Zone 0” (Gas) and "Zone 20" (Dust) classified areas (continuous
hazard) as it is shown on the following sketch:
+
Zone "0"
600T EN Tx
category 1G
(EEx ia)
dangerous
medium
(process)
Tank
Zone "20"
600T EN Tx
category 1D
(EEx ia)
(IP6x)
dangerous
medium
(process)
Silo
Application with Gas
Application with Dust
+
