WIKA TC12-M - Handbuch (Seite 27)

GB
7. Information on mounting and operation in hazardous areas
14083458.01 09/2013 GB/D
WIKA operating instructions models TR12, TC12 (Ex i) 27
The values in brackets apply to special designs. These sensors are manufactured using
special sealing compounds. Moreover, they are equipped with connection heads made of
stainless steel and cable glands for the low-temperature range.
According to approval, these thermometers are suitable for the temperature classes
T6 ... T3. This applys for instruments without built-in transmitter and/or digital displays.
Thermometers with transmitters can be used for temperature classes T6 ... T4 and are
marked accordingly. The use of equipment for applications with lower temperature classes
(for example T2) than marked is admissible. Make sure the maximal ambient temperature
for the safe use of the instrument is not exceeded.
7.3 Overview of the temperature zones
FF-00147.00
Tx12 Tx12
Option: with built-in
transmitter e.g. T32
Tx12-A Tx12-A
T3 T3
Pr
ocess connection
Pr
ocess connection
1)
Permissible temperatures at
T1: (-50) -40 °C < T
a
< +300 °C
T3: (-50) -40 °C < T
a
< +150 °C
T4: (-50) -40 °C < T
a
< +100 °C
T4
Transmitter
: (-50) -40 °C < T
a
< +85 °C
1) Temperature zone undefined
T4 T4
Transmitter
T1 T1
1)