WIKA TC8 Serie Betriebsanleitung Seite 11

3. Commissioning, operation
Model TC82
TC82
Zone 1
3.5.1 Variant 1
The thermometer is fitted to a certified enclosure with "flameproof enclosure" ignition
protection type, which has a terminal block built into it.
Detection and conversion of the thermoelectric voltage by means of an electronic module
outside of the hazardous area.
Marking: II 2/-G Ex db IIC T6 ... T1 Gb/-
The flameproof case or the connection head is in zone 1 (or zone 2). The sensor is located
in a non Ex zone.
A heating in the connection head does not occur with variant 1. However, an impermissible
heat reflux from the process which can exceed the operating temperature of the case or
the temperature class, must be prevented through suitable heat insulation or a suitably
long neck tube.
3.5.2 Variant 2
The thermometer is fitted to a certified enclosure with "flameproof enclosure" ignition
protection type, which has an electronic assembly built into it.
The signal is a current signal (4 ... 20 mA), voltage signal (0 ... 10 V) or fieldbus signal,
which is generated from a head-mounted transmitter.
WIKA additional information TC82, TC83, flameproof enclosure (Ex d)
T > 400 °C:
Non-Ex area
Model TC83
TC83
Zone 1
T > 400 °C:
Non-Ex area
EN
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