Mounting Examples - WIKA TR Serie Información Adicional

3. Commissioning, operation

3.4 Mounting examples

3.4.1 Possible installation methods with the marking II 2G Ex eb IIC T1 ... T6 Gb or
II 2D Ex tb IIIC TX °C Db
Zones 1, 2 or zones 21, 22
Thermowell
TWxx
without separation of Ex zones
The welded parts, process connections, compression fittings, thermowells or cases used
must be designed such that they withstand all influencing variables resulting from the
process, such as temperature, flow forces, pressure, corrosion, vibration and impacts.
WIKA additional information, models TRxx and TCxx (Ex nA, Ex ec, Ex eb, Ex tc, Ex tb)
Hazardous area
Connection head/
Field case
Process
connection
optional: process
connection
welded
Compression fitting
Non-hazardous area
Maximum overvoltage
category II according
to IEC/EN 60664-1 is
permitted for the circuits.
Possible installation
methods with the marking
II 2G Ex eb IIC T1 ... T6 Gb
or II 2G Ex tb IIC TX °C Db
EN
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