WIKA T24 - Handbuch (Seite 25)

GB
WIKA operating instructions temperature transmitter, model T24 25
2370242.09 08/2013 GB/D
Operation in zone 1 and zone 2:
According to the temperature class, these transmitters may only be
used in the following ambient temperature ranges:
Permissible ambient temperatures
Model T24.10.xx2
II 1G EEx ia
T4 : -40 °C ≤ Ta ≤ +85 °C
T5 : -40 °C ≤ Ta ≤ +75 °C
T6 : -40 °C ≤ Ta ≤ +60 °C
Model T24.10.xx9
II 3G Ex nL/nA/ic
T4 : -40 °C ≤ Ta ≤ +85 °C
T5 : -40 °C ≤ Ta ≤ +75 °C
T6 : -40 °C ≤ Ta ≤ +60 °C
8.3 Safety-related maximum values
Power supply / 4 ... 20 mA-loop
The following safety-related maximum values must not be exceeded:
Model T24.10.xx2
II 1G EEx ia
Voltage: U
i
= DC 30 V
Current: I
i
= 120 mA
Power: P
i
= 800 mW
Model T24.10.xx9
II 3G Ex nL/nA/ic
Voltage: U
i
= DC 36 V
Power: P
i
= 1 W
The following values have an external effect at the ⊕ and ⊖
connection terminals of the transmitter (all models):
effective internal capacitance Model T24.xx.xx2 C
i
= 6.2 nF
Model T24.xx.xx9 C
i
= 10 nF
effective internal inductance L
i
= 110 µH
8. Information on mounting and operation ...