Wika T24 Manuale Utente Scaricare il pdf (Pagina 28)

28 WIKA operating instructions temperature transmitter, model T24

2370242.09 08/2013 GB/D

10. Maintenance

The temperature transmitter described in these operating instructions

is maintenance-free!

The electronics are completely encapsulated and incorporate no

components which could be repaired or replaced.

Repairs must only be carried out by the manufacturer.

11. Faults

10. Maintenance / 11. Faults

l = 0 mA

Current loop disconnected

Power supply connected

incorrectly (wrong polarity)

Transmitter not connected

Process temperature out of range

Sensor burnout

Wrong transmitter conguration

l > 20 mA

Fault-tree

Terminals are

reversed

Wrong transmitter conguration

Process temperature out of

range

Sensor break or short circuit

Jumper is missing

(2-wire connection)

l < 4 mA

Sensor connected incorrectly

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Wika T24 Manuale Utente Pagina 28