Electrical
connections
CI/TTF300-X1
TTF300
EN - 27
4.6.1.2 ATEX - Zone 1 (0)
Transmitter design: II 2 (1) G Ex [ia] ib IIC T6
Zone 0 or Zone 1
Ex area Zone 1
Safe area
B
C
ib
A00127
ia
J
A
D
ia
Fig. 18
A Sensor
B Transmitter TTF300
C Supply isolator [Ex ib]
D Interface for LCD indicator
The input for the supply isolator must have an [Ex ib] design.
As the user, it is your responsibility to ensure that the sensor instrumentation meets the
requirements of applicable explosion protection standards. The sensor can be installed in Zone
1 or Zone 0.
4.6.1.3 ATEX - Zone 1 (20)
Transmitter design: II 2 G (1D) Ex [iaD] ib IIC T6
Zone 0 or Zone 1 or
Zone 20
Ex area Zone 1
Safe area
ib
B
C
ib
A00128
ia
J
A
D
ia
Fig. 19
A Sensor
B Transmitter TTF300
C Supply isolator [Ex ib]
D Interface for LCD indicator
The input for the supply isolator must have an [Ex ib] design.
As the user, it is your responsibility to ensure that the sensor instrumentation meets the
requirements of applicable explosion protection standards. The sensor can be installed in Zone
0, Zone 1, or Zone 20.