WIKA TR12 Serie Manual De Instrucciones página 16

3. Commissioning, operation
3.8 Overview of the temperature zones
EN
3.9 Thread gap
For fitting, the following permitted thread gaps for electrical equipment for gas hazardous
areas must be maintained:
Thread gap for parallel threads (IEC/EN 60079-1, table 4):
■
Case volumes < 100 cm³: ≥ 5 mm
Case volumes > 100 cm³: ≥ 8 mm
There must be at least 5 threads engaged
Thread gap for tapered threads (IEC/EN 60079-1, table 5):
■
on each component ≥ 5
There must be at least 4.5 threads engaged
16
Tx12
Option: with built-in
transmitter e.g. T32
T4
Tx12-A
T3
T1
1)
WIKA additional information TR12/TC12, flameproof enclosure (Ex d)
Tx12
T4
Transmitter
Tx12-A
T3
T1
Permissible temperatures at
1)
T1: (-50) -40 °C < T
T3: (-50) -40 °C < T
T4: (-50) -40 °C < T
T4
Transmitter
1) Temperature zone undefined
< +300 °C
a
< +150 °C
a
< +80 °C
a
: (-50) -40 °C < Ta < +80 °C