Zone 1 (20) - ABB TTH300 Inbetriebnahmeanleitung

4.3.4

Zone 1 (20)

Transmitter design: II 2G (1D) EEx [iaD] ib IIC T6
Zone 0, Zone 1,
Fig. 14
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 0, zone 1 or zone 20.
CI/TTH300-X1
Zone 20
J
A
Explosion-protection zone 1
D
i
a
ia
B
C Power supply [EEx ib]
D HMI interface for LCD displays (activation
is possible as an option only when
ordering)
TTH300
Electrical connection
Safety area
ib
ib
C
A00147
EN - 19