WIKA TR10-A - Handbuch (Seite 28)

3345267.12 01/2014 GB/D
28 WIKA operating instructions RTD and TC, intrinsically safe designs (Ex i)
GB
To help select the minimum neck length, the following standard values have been determined.
Maximum temperature of the
medium
Recommendation for
dimension N
Recommendation for
dimension X
100 °C - -
135 °C 20 mm 20 mm
200 °C 50 mm 50 mm
> 200 °C ≤ 450 °C 100 mm 100 mm
WARNING!
For reasons of work safety and saving of resources, hot surfaces should be protected
against accidental touch and energy loss by means of insulation.
7.4 Mounting examples in hazardous areas
7.4.1 Possible installation methods with the marking II 1G Ex ia IIC T6 Ga or
II 1D Ex ia IIIC T65 °C Da
7. Information on mounting, operation in hazardous area (Europe)
Zones 0, 1, 2 or Zones 20, 21, 22
Hazardous area Safe area
Thermowell
Thermowell
welded
TWxx
TWxx
Process
connection
Connection head/
Field housing
Tx10-B
Tx10-C
Tx10-C
Tx10-D
Tx10-H
Tx10-H
Option:
with built-in
transmitter:
e.g. T32
Tx10-A
Process
connection
Compression
fitting
Associated
electrical equipment
Intrinsically
safe supply or
suitable barrier
Intrinsically
safe supply or
suitable barrier
Intrinsically
safe supply or
suitable barrier
Intrinsically
safe supply or
suitable barrier
Tx10-A
Tx10-A
Tx10-A
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