GB
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.xx
2
II 1G EEx ia
maximum possible values
U
0
= DC 6.4 V
I
0
= 42.6 mA
P
0
= 37.1 mW
Model T24.10.xx
9
II 3G Ex nL/nA/ic
effective values during operation
U
0
= DC 5.4 V
I
0
= 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 ...
