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6. Special conditions for safe use (X conditions)
The influence of power dissipation of other devices placed beside the transmitter has
to be taken into account with regard to a temperature rise of the transmitter’s ambient
temperature.
General information:
Transmitters with “ia” marking may also be used in supply circuits of type “ib” with the same
connection parameters. Thus the entire measuring circuit (including the sensor circuit) is an
“ib” circuit. Transmitters were operated with supply circuits of type “ib” may not be re-used
with supply circuits of type “ia”.
6.1 Approval ATEX and IECEx
6.1.1 Models T16.x-AC, T16.x-AI
■
The transmitter shall be mounted in an enclosure in accordance with IEC 60079-11
suitable for the relevant installation area. The enclosure has to fulfil at least IP20 for
areas requiring EPL Ga, Gb or Gc and IP54 in accordance with IEC 60079-0 for areas
requiring EPL Db or Dc.
■
During the installation internal wiring, clearances, creepage distances and separations
have to be considered according to IEC 60079-11.
6.1.2 Model T16.x-AN
■
The transmitter shall be mounted in an enclosure fulfilling at least IP54 in accordance
with IEC 60079-0 and IEC 60079-15.
■
During the installation clearances, creepage distances and separations have to be
considered according to IEC 60079-15.
■
The equipment shall only be used in an area of at least pollution degree 2, as defined in
IEC 60664-1.
■
Maximum overvoltage category II according to IEC 60664-1 is permitted for the circuits.
6.1.3 Model T16.x-AE
■
The transmitter shall be mounted in an enclosure fulfilling at least IP54 in accordance
with IEC 60079-0 and IEC 60079-7.
■
During the installation clearances, creepage distances and separations have to be
considered according to IEC 60079-7.
■
The equipment shall only be used in an area of at least pollution degree 2, as defined in
IEC 60664-1.
■
Maximum overvoltage category II according to IEC 60664-1 is permitted for the circuits.
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