Hazardous Area Considerations - ABB 2600T Series Operating Instructions Manual

7 Hazardous Area considerations

7.1 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 60079-0 (General
requirements) EN 60079-1 (Flameproof enclosures "d") EN 60079-11
(Equipment protection by intrinsic safety "i") EN 60079-26 (Equipment
with equipment protection level -EPL- Ga) EN 61241-0 (General
requirements) EN 61241-1 (Protection by enclosures "tD") EN 61241-
11 (Protection by intrinsic safety"iD") the pressure transmitters of the
2600T 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 1 G Ex ia IIC T4/T5/T6 and II 1 D Ex iaD 20
T85°C
FM Approvals certificate number
FM09ATEX0024X (Lenno products)
FM09ATEX0069X (Minden products)
FM11ATEX0035X (Faridabad products)
FM11ATEX0046X (Shanghai products)
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)
− T85°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.
Application for pressure transmitter Ex ia categories 1G and 1D
Application with Gas
16 SOI/266-XC Rev. I | 2600T Series Pressure transmitters
Zone 0
266 Tx Category 1G Ex ia
Note: the transmitter must be
connected to a supply
(associated apparatus) certified
[Ex ia]
Certificate IECEx Ex ia IIC T4/T5/T6 and Ex iaD 20 T85°C FISCO,
IP67
IECEx certificate number
IECEx FME 09.0003X (Lenno and Minden products)
IECEx FMG 11.0019X (Shanghai products)
Important. 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:
− Ex ia: Intrinsic safety, protection level "a"
− IIC: Gas group
− T4: Temperature class of the transmitter
(corresponding to 135°C max) with a Ta from -50°C to +85°C
− T5: Temperature class of the transmitter
(corresponding to 100°C max) with a Ta from -50°C to +40°C
− T6: Temperature class of the transmitter
(corresponding to 85°C max) with a Ta from -50°C to +40°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 sketches.
Application with Dust
7 Hazardous area considerations
Zone 20
266 Tx Category 1D IP6x (Ex ia)
Note: the protection is mainly
assured by the "IP" degree
associated to the low power from
supply. This can either be [ia] or
[ib] certified [Ex ia]