ABB TTF300 Inbetriebnahmeanleitung Seite 65

4.6.1.2 ATEX - Zone 1 (0)
Transmitter design: II 2 (1) G Ex [ia] ib IIC T6
Zone 0 or Zone 1
Fig. 18
A Sensor
B Transmitter TTF300
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
Fig. 19
A Sensor
B Transmitter TTF300
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.
CI/TTF300-X1
J
A
Zone 20
ia
J
A
Ex area Zone 1
D
ia
ia
B
C Supply isolator [Ex ib]
D Interface for LCD indicator
Ex area Zone 1
D
ia
B
C Supply isolator [Ex ib]
D Interface for LCD indicator
TTF300
Electrical connections
Safe area
ib
C
A00127
Safe area
ib
ib
C
A00128
EN - 27