ABB 2600T Pressure Transmitter Series User Manual page 64

364xS User's Manual
Certificate ATEX II 1/2 GD, EEx d IIC T6 IP67 T85°C (-50°C ≤ Ta ≤ +75°C)
ZELM certificate number ZELM 06 ATEX 0302 X
The meaning of ATEX code is as follows:
II : Group for surface areas (not mines)
1/2 : Category - It means that only a part of the transmitter complies with
category 1 and a second part complies with category 2 (see the picture on
the right)
G : Gas (dangerous media)
D : Dust (dangerous media)
T85°C: Maximum surface temperature of the transmitter enclosure with a Ta
(ambient temperature) +75°C for Dust (not Gas) with a dust layer up to 50
mm depth.
Note: the number close to the CE marking of the transmitter safety label identifies
the Notified Body which has responsibility for the Surveillance of the production.
The other marking refers to the protection type used according to relevant EN
Standards:
EEx d: Explosion proof/Flameproof
IIC : Gas group
T6 : Temperature class of the transmitter (which corresponds to 85°C max)
with a Ta (ambient temperature) +75°C.
About the applications, this transmitter can be used in Zone "0" (Gas) classified
areas (continuous hazard) with its "process part" only, whereas the remaining part of
the transmitter, i.e. its enclosure, can be used in Zone 1 (Gas), only (see sketch
below). Reason of this is the process part of the transmitter (normally called primary
transducer) that provides inside separation elements to seal off the electrical sensor
from the continuously hazardous process, according to the EN50284 and EN50018.
About Dust application, the transmitter is suitable for "Zone 21" according to the EN
50281 as it is shown on the relevant part of pictures on the right.
Certificate ATEX II 3 GD T50°C, EEx nL IIC T6 (-50°C ≤ Ta ≤+40°C)
respectively, GD T95°C, EEx nL IIC T4 (-50°C ≤ Ta ≤+85°C)
ZELM certificate number ZELM 06 ATEX 0302 X
Note: It is the technical support for the ABB Declaration of Conformity
The meaning of ATEX code is as follows:
II : Group for surface areas (not mines)
3 : 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
The other marking refers to the protection type used according to the standards:
EEx nL : Type of protection "n" with "energy limitation" technique
IIC : Gas group
T6 : Temperature class of the transmitter (which corresponds to 85°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
Note: when installed this transmitter must be supplied by a voltage limiting device
which will prevent the rated voltage of 42 V d.c. being exceeded.
About the applications, this transmitter can be used in "Zone 2" (Gas) and "Zone 22"
(Dust) classified areas (unlikely/infrequent hazard) as it is shown on the picture on
the right.
Application with Gas
Application with Dust
Note: the protection is mainly assured by the "IP degree"
associated to the low power from the supply
Application with Gas
Note: the transmitter must be connected to a supply with 42
V d.c. max output voltage as above indicated. The current
of the transmitter is less than 25 mA.
Application with Dust
Note: the protection is mainly assured by the "IP degree"
associated to the low power from the supply.
Additional Safety
64