ABB TTF350 Inbetriebnahmeanleitung Seite 53

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 TTF350 transmitter
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. For zone 0, the circuit must be in "ia" design.
CI/TTF350-X1
Explosion-protection zone 1
ia
J
A
D
ia
B
C Power supply [EEx ib]
D HMI interface for LCD display
TTF350
Electrical connection
Safety area
ib
C
A00127
EN - 21