ABB 266FF, Operating Instructions Manual

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50 OI/266/FF-EN Rev. B | 2600T Series Pressure transmitters
12 Hazardous area considerations
According to ATEX Directive (European Directive 94/9/EC of 23
March 1994) and relative Standards which can assure compliance
with Essential Safety Requirements, i.e., EN 60079-0 (General
requirements) EN 60079-15 (Specification for electrical apparatus
with type of protection “n”) EN 61241-0 (General requirements),
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.
d) Certificate ATEX II 3 G Ex nL IIC T4/T5/T6
(for T4 = -50°C ≤ Ta ≤+85°C),
(for T5 and T6 = -50°C ≤ Ta ≤+40°C) and II 3D Ex tD A22 IP67
T85°C. FM Approvals Certificate number
FM09ATEX0025X (Lenno products)
FM09ATEX0070X (Minden products)
FM11ATEX0037X (Bangalore products)
FM11ATEX0048X (Shanghai products)
The meaning of Atex code is as follows :
— II 3G Ex nL IIC T4/T5/T6 (for T4 = -50°C < Ta < +85°C)
(for T5 and T6 = -50°C < Ta < +40°C)
— II: Group for surface areas (not mines)
— 3: Category of equipment
— G: Gas (Dangerous media)
— Ex nL: type of protection “n” with “energy limitation” technique
— IIC: gas group
— T4: Temperature class of the transmitter (which
corresponds to 135°C max) with a Ta from -50°C to +85°C
— T5: Temperature class of the transmitter (which corresponds
to 100°C max) with a Ta from -50°C to +40°C
— T6: Temperature class of the transmitter (which corresponds
to 85°C max) with a Ta from -50°C to +40°C
Application with Gas
Application with Dust
Note: the transmitter must
be connected to a supply
with 42V d.c. max output
voltage as above indicated.
The Ii of the transmitter is
less than 25 mA.
Zone 2
266 Tx Category 3G Ex nL
Note: the protection is mainly
assured by the “IP” degree
associated to the low power
from supply.
Important - Note for pressure transmitter with combined approval. Before installation of the Transmitter, the customer should permanent
mark his chosen Protection Concept on the safety label. The transmitter can only be used with according to this Protection Concept for the
whole life. If two or more types of protection box (on safety label) are permanent marked, the pressure transmitter must be removed from
hazardous classified locations. The selected Type of Protection is allowed to be changed only by manufacturer after a new satisfactory
assessment.
Important. It is the technical support for the ABB Declaration of
Conformity
Important.
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) (unlikely/infrequent hazard) as it shown on the following
skecth (left side)
— II 3D Ex tD A22 IP67 T85°C
— II: Group for surface areas (not mines)
— 3: Category of equipment
— D: Gas (Dangerous media)
— Ex tD: type of protection “tD” means protection by
enclosure technique
— A22: for zone 22 (tested acc. to method A of EN61241-0)
— IP67: degree of protection of the transmitter acc. EN60529
— T85°C: Maximum surface temperature of the transmitter
enclosure with a Ta from -50°C to +40°C for Dust (not Gas).
About the applications, this transmitter can be used in Zone 22
(Dust) (unlikely/infrequent hazard) as it shown on the following
skecth (right side)
Application for pressure transmitter Ex nL categories 3G and 3D
Zone 22
266 Tx Category 3D IP6x
(Ex nL)