ABB TTF350 Operating Instructions Manual page 27

Field mounted temperature transmitters

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5.5.2.3

Zone 1 (20)

Transmitter design: II 2G (1D) EEx [iaD] ib IIC T6

Zone 0, Zone 1,

Fig. 15

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.

OI/TTF350-EN

Zone 20

Explosion-protection zone 1

C Power supply [EEx ib]

D HMI interface for LCD display

TTF350

Electrical connection

Safety area

A00128

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