WIKA TR12-M - Handbuch (Seite 13)

GB
4. Design and function
11419904.02 09/2013 GB/D
WIKA operating instructions models TR12, TC12 (Ex d) 13
Possible sensor measuring ranges:
Model TR12: -200 ... +600 °C
Model TC12: -40 ... +1,200 °C
The following mounting and operating information has been compiled with care.
However, it is not possible to consider all potential usage cases.
4.2 Technical description of the three variants
TR12-B, TC12-B
Variant 1
TR12-B, TC12-B
Variant 2
TR12-B, TC12-B
Variant 3
thread
TR12-M, TC12-M
Module
thread
thread thread thread
T4
T3
T1
T
undefined
T4: (-50)-40 °C < Ta < +85 °C
T3: (-50)-40 °C < Ta < +150 °C
T1: (-50)-40 °C < Ta < +300 °C
Legend:
 Connection head
 Neck tube
 Connection to thermowell
 Measuring insert
 Terminal block
 Transmitter (option)
 Field transmitters
14039769.01
Variant 1:
The thermometer is fitted to an enclosure certified with an ignition protection type of
“flameproof”, in which a terminal block is installed. If the thermometer is marked with II 2G
Ex d IIC T1-T6 Gb, then it is designed for use in zone 1. If the thermometer is marked with II
1/2 G Ex d IIC T1-T6 Ga/Gb, then it is designed for use with a thermowell at the partition to
zone 0.
Variant 2:
The thermometer is built into a certified enclosure, with an ignition protection type of
“flameproof”, in which an electronic assembly has been fitted. If the thermometer is marked
with II 2G Ex d IIC T1-T6 Gb, then it is designed for use in zone 1. If the thermometer is
marked with II 1/2 G Ex d IIC T1-T6 Ga/Gb, then it is designed for use with a thermowell at
the partition to zone 0.