ABB TTH300 Inbetriebnahmeanleitung Seite 42

Electrical connection
4.3.3 Zone 1 (0)
Transmitter design: II 2 (1) G EEx [ia] ib IIC T6
Zone 0 or Zone 1
Fig. 13
A Sensor
B Transmitter in housing with IP20 level of
protection
For instruments in zone 1, the transmitter must be installed in its own housing with IP20 level of
protection. The input for the power supply must be at a minimum in [EEx ib] design.
The sensor must be used by the user in accordance with applicable ignition-protection
standards. It can be installed in zone 1 or zone 0.
18 - EN
Explosion-protection zone 1
ia
J
A
D
i
a
B
C Power supply [EEx ib]
D HMI interface for LCD displays (activation
is possible as an option only when
ordering)
TTH300
Safety area
ib
C
A00146
CI/TTH300-X1