ABB TTF300 Note De Mise En Exploitation page 60

Electrical connections
4.5.3 Zone 1 (0)
Transmitter design: II 2 (1) G EEx [ia] ib IIC T6
Zone 0 or Zone 1
Fig. 12
A Sensor
B Transmitter TTF300
The input for the repeater power supply must be designed to "EEx ib" as a minimum.
The user must ensure that sensor instrumentation meets the requirements of applicable Ex
standards. It can be installed in Zone 1 or Zone 0. For zone 0, the circuit must be designed to
"ia".
24 - EN
ia
J
A
Ex Zone 1
D
ia
B
C Power supply [EEx ib]
D Interface for LC display
TTF300
Safe area
ib
C
A00127
CI/TTF300-X1