Flameproof Protection Zone 0 - ABB TTF350 Inbetriebnahmeanleitung

4.5.9

Flameproof protection Zone 0

Housing design: ATEX II 2G EEx d IIC T6
Transmitter design: ATEX II 1G EEx ia IIC T6
Explosion-protection zone 0
Fig. 18
A Sensor
B TTF350 transmitter in Ex d housing
To achieve the flameproof protection, proper mounting of a specially certified cable gland that
complies with the standards and relevant Ex designation on the cover sheet of the PTB 99
ATEX 1144 certificate is required
The input for the power supply must be in EEx ia 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
J
A
Explosion-protection zone 1
D
i
a
i
a
B
C Power supply
D HMI interface for LCD display
TTF350
Electrical connection
Safety area
i
a
C
A00133
EN - 27