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266CRH / 266CRT, 266CSH / 266CST MULTIVARIABLE PRESSURE TRANSMITTER | OI/266CXX/MODBUS-EN REV. A
Ex explosion protection aspects (Europe and International)
According to ATEX Directive (European Directive 2014/34/EU)
and applicable European standards which assure compliance
with Essential Safety Requirements, the following ratings apply
to the transmitters with or without integrated digital display.
•
EN 60079-0: Explosive atmospheres – Part 0: Equipment -
General requirements
•
EN 60079-1: Explosive atmospheres – Part 1: Equipment
protection by flame-proof enclosures d
•
EN 60079-15: Explosive atmospheres – Part 15: Equipment
protection by type of protection n
•
EN 60079-26: Explosive atmospheres – Part 26: Equipment
with Equipment Protection Level (EPL) 'Ga
The transmitters are certified for the following gas groups,
categories, and media in dangerous atmosphere, temperature
classes, and types of protection. The sketches located below are
examples of applications.
Type of protection: Ex d Certifications ATEX (Code E2)
and IECEx (Code E9)
Code E2 Ex-Marking ATEX
II 1/2G db IIC T6 Ga/Gb
and
II 1/2D Ex tb IIIC T85°C Db
FM Approvals Certificate
The meaning of the ATEX code is as follows:
•
II: Equipment Group for hazardous surface areas
(not mines)
•
1/2: Category – This means the transmitter is suitable for
use in the partition to category 1 (e.g., sensor category 1 /
transmitter category 2) (see application sketch).
•
G: Gas (dangerous media)
•
D: Dust (dangerous media)
•
Ex d: Flame-proof enclosure
•
IIC: Explosion group gases
•
T6: Temperature class of the transmitter
(corresponds to 85 °C maximum) with an ambient
temperature from 50 to 75 °C.
•
Ex tb: Dust protected Flame-proof enclosure
•
IIIC : Explosion Group 'dust'
•
T85 °C: Maximum surface temperature of the transmitter
housing at an ambient temperature Ta from 50 to 75 °C
for dust (not for gas) with a dust layer up to 50 mm thick
•
IP 67: For protection type, the first characteristic numeral
indicates the protection of the integrated electronics
against ingress of solid foreign objects including dusts.
The assigned 6 means a dust-tight enclosure (no ingress
of dust). The second characteristic numeral indicates the
protection of the integrated electronics against ingress
of water.
The assigned 7 means a water-protected enclosure
against a temporary immersion in water under
standardized conditions of pressure and time.
Note
The number printed by the CE mark on the safety label identifies
the Notified Body which has responsibility for the surveillance of
the production (QAN = Quality assessment notification).
FM09ATEX0023X
7
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