Zone 2 - ABB HART TTF350 Commissioning Instructions

Field-mounted temperature transmitters
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  • ENGLISH, page 33
Electrical connection
4.5.4
Zone 1 (20)
Transmitter design: II 2G (1D) EEx [iaD] ib IIC T6
Zone 0, Zone 1,
Fig. 13
A Sensor
B TTF350 transmitter
The input for the power supply must be at a minimum in EEx ib design.
The sensor must be used by the user in accordance with applicable ignition-protection
standards. It can be installed in zone 0, zone 1 or zone 20. For zone 0 and zone 20, the circuit
must be in "ia" design.
22 - EN

Zone 20

ia
J
A
Explosion-protection zone 1
D
ia
B
C Power supply [EEx ib]
D HMI interface for LCD display
TTF350
Safety area
ib
ib
C
A00128
CI/TTF350-X1

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