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2 6 6 H S H MODBUS TR A N S M IT TE R |
P R E SSU R E/ T EM P ER AT U R E M U LT I VA R I A B L E | O I/ 2 6 6 H SH M T- EN R E V. A
According to ATEX Directive (European Directive 2014/34/
EU 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”), 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 ic IIC T4/T5/T6 Gc IP67 and II 3 D
Ex tc IIIC T85°C Dc
Ta = -50°C to +75°C - IP67
FM Approvals Certificate number
FM09ATEX0025X (Tremezzina, Minden, Bangalore and
Shanghai products)
The meaning of Atex code is as follows :
— II: Group for surface areas (not mines)
— 3: Category of equipment
— G: Gas (Dangerous media)
— Ex nL: type of protection “n” with “energy limitation”
— 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 3Gc Ex ic
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
permanently 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 tc: type of protection “tc” means protection by
enclosure technique
— 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 ic categories 3Gc and 3Dc
Zone 22
266 Tx Category 3Dc IP6x
Ex tc
