
GB
3211517.0707/2010GB/D
WIKAoperatinginstructionstemperaturetransmitterT12 31
Followinghaveanoutwardeectattheconnectionterminals⊕and
⊖ofthetransmitter:
eectiveinternalcapacity C
i
=25nF
eectiveinternalinductivity L
i
=650µH
Sensor connection (terminal 1 to 4)
Theconnectedsensormustnotwarmupinadmissablyaccordingto
thetemperatureclassoftherespectivehazardousareaforthefollow-
ingvaluesforvoltage,currentandpower.
ModelT12.x0.xx9
II3GExnL
II3GExnA
II3GExic
eectivevaluesduringoperation
U
0
=DC5V
I
0
=0.25mA
Thesumofthevaluesoftheconnectedsensorandtheconnection
linemustnotexceedthefollowingvaluesforthemaximumpermissib-
lecapacityandinductivity:
ModelT12.xx.xx2
II1GEExiaGroupe IIB
C
sensor
+C
line
<C
O
C
O
=11µF
L
sensor
+L
line
<L
O
L
O
=8.6mH
ModelT12.xx.xx2
II1GEExiaGroupe IIC
C
sensor
+C
line
<C
O
C
O
=1.5µF
L
sensor
+L
line
<L
O
L
O
=8.6mH
ModelT12.x0.xx9
II3GExicGroupe IIC
C
sensor
+C
line
<C
O
C
O
=1000µF
L
sensor
+L
line
<L
O
L
O
=1000mH
ConnectedthermocouplesormV-Sensorsmustnotexceedfollowing
values:
voltage Ui= DC1.2V
eectiveinternalcapacity Ci= negligable
eectiveinternalinductivity Li= negligable
8. Notes for mounting and operating in ...
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