Certificate Groups - ABB 2600T Pressure Transmitter Series User Manual

364xS User's Manual

Certificate groups

Certificate ATEX II 1GD T50°C, EEx ia IIC T6 (-50°C ≤  T a ≤ +40°C)
respectively, GD T95°C, EEx ia IIC T4 (-50° ≤ Ta ≤ +85°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 : 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 has responsibility for the surveillance of the production
The other marking refers to the protection type used according to relevant EN
standards:
EEx ia : Intrinsic safety, protection level "a"
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
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 picture on the right.
Certificate ATEX II 1/2 GD T50°C, EEx ia IIC T6 (-50°C ≤ Ta ≤ +40°C)
respectively, GD T95°C, EEx ia IIC T4 (-50°C ≤ Ta ≤ +85°C)
ZELM certificate number ZELM 06 ATEX 0302 X
Note: this ATEX Category depends on the application (see below) and also on the
intrinsic safety level of the transmitter supply (associated apparatus) which can
sometimes suitably be [ib] instead of [ia]. As it is well known, the level of an intrinsic
safety system is determined by the lowest level of the various apparatus used, i.e.,
in the case of [ib] supply, the system takes over this level of protection.
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 picture on the
right)
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 has responsibility for the surveillance of the production
The other marking refers to the protection type used according to relevant EN
standards:
EEx ia : Intrinsic safety, protection level "a"
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
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 pictures on
the right). 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 the pictures on the right.
Application with Gas
Note: the transmitter must be connected to a supply
(associated apparatus) certified [EEx ia]
Application with Dust
Note: the protection is mainly assured by the "IP
degree" associated to the low power from the supply
certified [EEx ia]
Application with Gas
Note: the transmitter can be connected to either [ib]
or [ia] supply (associated apparatus)
Application with Dust
Note: the protection is mainly assured by the "IP
degree" associated to the low power from the
supply. This can either be [ib] or [ia]
Additional Safety
63