12
TTF300
FIELD-MOUNT TEMPERATURE TRANSMITTER | CI/TTF300-EN REV. H
… 2 Use in potentially explosive atmospheres in accordance with ATEX and IECEx
… Installation instructions
ATEX – Zone 0
Marking: II 1 G Ex ia IIC T6...T1 Ga
Ex area Zone 0
Safe area
A
Sensor
B
TTF300 transmitter
C
Supply isolator [Ex ia]
D
Interface for LCD indicator
Figure 4: Hookup in ATEX – Zone 0
The input for the supply isolator must be designed with ‘Ex ia’
type of protection.
Please make sure to avoid impermissible electrostatic charging
of the transmitter when using it in Zone 0.
As the user, it is your responsibility to ensure that the sensor
instrumentation meets the requirements of applicable explosion
protection standards.
WARNING
Risk of explosion!
When using the device in areas which require the ‘Ga’ equipment
protection level - EPL (Zone 0), the TTF300 types should be
installed with aluminum housings to protect against mechanical
impact loads or friction.
Note
When operating the transmitter in Zone 0 (EPL ‘Ga’), the
compatibility of the device materials with the surrounding
atmosphere must be ensured.
Encapsulation material used for the transmitter:
Polyurethane (PUR)
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
Safe area
A
Sensor
B
TTF300 transmitter
C
Supply isolator [Ex ib]
D
Interface for LCD indicator
Figure 5: Hookup in ATEX - Zone 1 (0)
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, make sure that
impermissible electrostatic charging of the temperature
transmitter is avoided.
