ABB TTH300 Operating Instruction page 11

TTH300 HEAD-MOUNT TEMPERATURE TRANSMITTER | OI/TTH300-EN REV. G
ATEX – Zone 1 (0)
Marking: II 2 (1) G Ex [ia IIC Ga] ib IIC T6...T1 Gb
Zone 0 or 1 Ex area Zone 1
A Sensor
B Transmitter in housing with IP
rating IP 20
Figure 3: Hookup in ATEX - Zone 1 (0)
When using the transmitter in Zone 1, it must be installed in a
suitable housing with IP -rating IP 20.
The input for the supply isolator must be designed with 'Ex ib'
type of protection.
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.
When using the transmitter in Zone 1, you must ensure that
impermissible electrostatic charging of the temperature
transmitter is prevented (observe the warnings on the device).
Safe area
C Supply isolator [Ex ib]
D Interface for LCD indicator
ATEX – Zone 1 (20)
Marking: II 2 G (1D) Ex [ia IIIC Da] ib IIC T6...T1 Gb
Zone 20 or Ex area Zone 1
21
A Sensor
B Transmitter in housing with IP
rating IP 20
Figure 4: Hookup in ATEX - Zone 1 (20)
When using the transmitter in Zone 1, it must be installed in a
suitable housing with IP -rating IP 20.
The input for the supply isolator must be designed with 'Ex ib'
type of protection.
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 20 or
Zone 21.
When using the transmitter in Zone 1, make sure that
impermissible electrostatic charging of the temperature
transmitter is avoided (observe the warnings on the device).
Safe area
C Supply isolator [Ex ib]
D Interface for LCD indicator
11