ABB TTF350 Operating Instructions Manual page 29

Field mounted temperature transmitters

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5.5.2.5

Dust-explosion protection Zone 20:

Transmitter design: ATEX II 1D IP65 T135°C

Fig. 17

A Sensor

B TTF350 transmitter

C Power supply

The electric circuit of the transmitter must be limited by an upstream fuse per IEC 127 with a

fuse current rating of 32 mA. This is not required if the power supply is in intrinsically safe "ia"

design.

OI/TTF350-EN

Explosion-protection zone 20

D Fuse, 32 mA

E HMI interface for LCD display

TTF350

Electrical connection

Safety area

A00130

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