Zone 0; Zone 1 (0) - ABB TTH200 Commissioning Instruction

4.6.2

Zone 0

Transmitter design: II 1 G Ex ia IIC T6
Fig. 11
A Sensor
B Transmitter in housing with IP 20 degree
of protection
For instruments in Zone 0, the transmitter must be installed in a suitable housing with IP 20
degree of protection. The input for the supply isolator must have an [Ex ia] design.
When using the transmitter in Zone 0, you must ensure that impermissible electrostatic charging
of the temperature transmitter is prevented (observe the warnings on the device).
The user must ensure that sensor instrumentation meets the requirements of applicable Ex
standards.
4.6.3

Zone 1 (0)

Transmitter design: II 2 (1) G Ex [ia] ib IIC T6
Zone 0 or Zone 1
Fig. 12
A Sensor
B Transmitter in housing with IP 20 degree
of protection
For instruments in Zone 1, the transmitter must be installed in a suitable housing with IP 20
degree of protection. The input for the supply isolator must have an [Ex ib] design.
The user must ensure that sensor instrumentation meets the requirements of applicable Ex
standards. It can be installed in Zone 1 or Zone 0.
CI/TTH200-EN
Zone 0
J
A
J
A
Ex Zone 0
D
i
a
ia
B
C Supply isolator [Ex ia]
D Interface for HMI LCD Display type AS
Ex Zone 1
D
i
a
ia
B
C Supply isolator [Ex ib]
D Interface for HMI LCD Display type AS
TTH200
Electrical connection
Safe area
ia
C
A00146
Safe area
ib
C
A00146
EN - 17