Wika T24 Manual do Utilizador descarregar pdf (Página 26)

26 WIKA operating instructions temperature transmitter, model T24

2370242.09 08/2013 GB/D

Connection of the sensor (terminal 1 to 3)

For the following values for voltage, current and power in accordance

with the temperature class of the respective hazardous area, the

connected sensor must not warm up inadmissibly.

Model T24.10.xx2

II 1G EEx ia

maximum possible values

= DC 6.4 V

= 42.6 mA

= 37.1 mW

Model T24.10.xx9

II 3G Ex nL/nA/ic

eective values during operation

= DC 5.4 V

= 0.51 mA

■

Do not connect the programming unit to a T24 if the T24 is located

in a hazardous area.

■

The external wiring shall be suitable for the maximum ambient

temperature range (max. 85 °C) of the end use application. The

minimum cross section for external wiring is 0.14 mm².

■

Ex ic applications:

The model T24.10.xx9 temperature transmitter must be installed

in a Pollution Degree 2 environment (or better) in the end use

application, within an enclosure with a minimum of IP 20, provided

by end user.

■

Ex nA or nL applications:

The model T24.10.xx9 temperature transmitter must be installed

in a Pollution Degree 2 environment (or better) in the end use

application, within an enclosure with a minimum of IP 54, provided

by end user.

8. Information on mounting and operation ...

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Wika T24 Manual do Utilizador Página 26