WIKA T12 - Handbuch (Seite 28)

GB
3211517.07
07/2010
GB/D
28 WIKA operating instructions temperature transmitter T12
8.1 Model overview and their European approvals
Model Ex protection and
Approval No.
Ignition
protection type head
mounting
version
rail
mounting
version
T12.1x.xx2 T12.30.xx2 II 1G EEx ia IIB/IIC T4/T5/T6
DMT 98 ATEX E 008 X
intrinsically safe
equipment
T12.10.xx9 T12.30.xx9 II 3G Ex nL IIC T4/T5/T6 energy-limited
equipment
II 3G Ex nA IIC T4/T5/T6 non-sparking
equipment
II 3G Ex ic IIC T4/T5/T6 intrinsically safe
equipment
8.2 Special conditions for safe use
T12.30.xxx:
The surface of the case is not conductive. The temperature transmitter
must be mounted in a way that electrostatic charges will not occur.
T12.xx.xx2:
Temperature transmitters in a hazardous area are supplied only
with associated intrinsically safe apparatus that are approved for
this hazardous area. These transmitters must be mounted in a case
that must at least correspond to following ingress protection IP 20
according to EN 60529 / IEC 60529.
T12.10.xx2 for category II 1G/IIC in addition:
The surface of the case is not conductive. The temperature transmitter
must be mounted in a way that electrostatic charges will not occur.
T12.xx.xx9 (Use as energy-limited equipment II 3G EEx nL):
The supply current circuit must fulfil the requirements for ignition
protection type II 3G EEx nL energy-limited per EN 50021. These
temperature transmitters must be mounted in a case that must at
least correspond to following ingress protection IP 54 according to
EN 60529 / IEC 529.
8. Notes for mounting and operating in ...