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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
c) Certificate ATEX II 1/2 G Ex db IIC T6 Ga/Gb and II 1/2 D
Ex tb IIIC T85°C Db
Ta = -50°C to +75ºC – IP67
FM Approvals Certificate number
FM09ATEX0023X (Tremezzina, Minden, Bangalore and
Shanghai products)
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 next application
sketch).
— G: Gas (dangerous media)
— D: Dust (dangerous media)
— T85°C: Maximum surface temperature of the
transmitter enclosure with a Ta (ambient
temperature) +75°C for Dust (not Gas) with a dust
layer up to 50 mm depth.
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.
Application with Gas
IP code
About the degree of protection provided by the enclosure of the pressure transmitter, the 2600T SERIES has been
certified IP67 according to EN 60529 standard. The first characteristic numeral indicates the protection of the inside
electronics against ingress of solid foreign objects including dusts.
The assigned “6” means an enclosure dust-tight (no ingress of dust).
The second characteristic numeral indicates the protection of the inside electronics against ingress of water.
The assigned “7”means an enclosure water-protected against a temporary immersion in water under standardized
conditions of pressure and time.
Application with Dust
Zone “0”
Zone “1”
Dangerous
medium
(process)
Tank
Zone “0” / Zone “1”
separation element
Primary transducer
266 Tx
Category 1/2 Ga Ex d
Zone “20”
Dangerous
medium
(process)
Silo
Certificate IECEx Ex db IIC T6 Ga/Gb and Ex tb IIIC T85°C
Db, Ta= -50°C to +75°C - IP67
IECEx certificate number
IECEx FME 16.0002X (Tremezzina, Minden and Shanghai
products)
The other marking refers to the protection type used
according to relevant EN Standards:
— Ex d: Explosion proof
— IIC: Gas group
— T6: Temperature class of the transmitter
(corresponding to 85°C max) with a Ta from -50°C to
+75°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 sketch below). 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 EN 60079-1.
About Dust application, the transmitter is suitable for
“Zone 21” according to the EN 60079-1 as it is shown on
the relevant part of the sketches.
Application for pressure transmitter Ex d categories 1/2G and 1/2D
Zone “21”
266 Tx
Category 1/2 Db Ex
tb
