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. . . ADDENDUM FOR "EX SAFETY" ASPECTS AND "IP" PROTECTION (EUROPE)
Certificate ATEX II 1D Ex iaD 20 T95
ZELM Certificate number ZELM 08 ATEX 0361 X
The meaning of ATEX code is as follows:
II :
Group for surface areas (not mines)
1 :
Category
D :
Dust (dangerous media)
T95°C :
Maximum surface temperature of the transmitter enclosure with a Ta
(ambient temperature) +75°C for Dust (not Gas). For application with
dust layer between 5 and 50 mm, maximum surface temperature must
be consider according to IEC 61241-14 chapter 6.3.3.3.
(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:
Ex iaD 20 : Construction with inside intrinsic safety electronics suitable for Dust -
Zone 20
About the applications, this transmitter can be used in "Zone 20" (Dust) classified area
(continuous hazard) as it is shown on the picture.
Certificate ATEX II 1/2D Ex iaD 21 T95
ZELM Certificate number ZELM 08 ATEX 0361 X
The meaning of ATEX code is as follows:
II :
Group for surface areas (not mines)
1/2 :
Category
D :
Dust (dangerous media)
T95°C :
Maximum surface temperature of the transmitter enclosure with a Ta
(ambient temperature) +75°C for Dust (not Gas). For application with
dust layer between 5 and 50 mm, maximum surface temperature must
be consider according to IEC 61241-14 chapter 6.3.3.3.
(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:
Ex iaD 21 : Construction with inside intrinsic safety electronics suitable for Dust -
Zone 21.
About the applications, this transmitter can be used in "Zone 20" (Dust) and "Zone 21"
classified area (continuous hazard) as it is shown on the picture.
- 48 -
°
C
°
C
Application with Dust
Zone "20"
2600T Tx
category 1D
+
Note: the protection is mainly assured
by the "IP degree" associated to the low
power from the supply certfied [Ex ia]
Application with Dust
Zone "21"
2600T Tx
Zone "20"
category
1/2D IP6x
(Ex iaD)
dangerous
+
medium
(process)
primary
transducer
(Note: see
the
certificate
Zone 20 / Zone 21
for
Separation elements
exception)
Note: the protection is mainly assured by the
"IP degree" associated to the low power from
the supply. This can either be [b] or [ia] .
Ex iaD
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