ABB TTF300 Inbetriebnahmeanleitung Seite 68

Electrical connections
4.6.1.8 Flameproof enclosure - Zone 0 / 1
Housing design: ATEX II 2G Ex d IIC T6
Transmitter design: ATEX II 1G Ex ia IIC T6
Fig. 24
A Sensor
B Transmitter in Ex d housing
The only way to achieve the "flameproof enclosure" type of protection is through the correct
installation of a specially certified cable gland with Ex d type of protection that is marked
accordingly.
The input for the supply isolator must have an [Ex ia] design.
As the user, it is your responsibility to ensure that sensor instrumentation meets the
requirements of applicable Ex standards. The sensor can be installed in Zone 1 or Zone 0. For
Zone 0, the circuit must be of the [Ex ia] design.
30 - EN
Ex area Zone 0
J
A
Ex area Zone 1
D
i
a
i
a
B
C Supply isolator
D Interface for LCD indicator
TTF300
Safe area
i
a
C
A00133
CI/TTF300-X1