Huba Control 711 Mode D'emploi page 16

DANGER
Application in hazardous area
with current output 4 ... 20 mA)
The operation is acceptable into the intrinsically safe circuits only, with the
following maximum values:
Power supply
Current
Power dissipation
Consider the following data:
The length of the cable, which conveys the input/output signal, must be taken
in consideration because of its internal inductivity and capacity:
Internal capacitance Ci = 2 nF + 0.204 nF/m
Internal inductance
Mark in accordance acc. RL 94/9/EG
Protection type mark Ex ia IIC T4 Ga
The maximum allowable operating temperature T
transmitter can be used in open tanks, channels etc.
For the applications as Category-1- apparatus group IIC is not allowed the
critical electrostatic charging over the protection cap surface. Do not exceed
cable length of 300 m. Consider the valid norm according EN 60079-14 or
installation. Constant immersion max. up to over-pressure. The grounding con-
nection is conductively connected to the level transmitter housing. The ground
conductor of level transmitter must be connected to the equipotential bonding
system of the plant.
16
Ui ª 30 V
Ii ª 100 mA
Piª 750 mW
Li = 8 øH + 1.48 øH/m
Huba Control AG - Type 711 - Edition 10/2018 - 119052
II 1 G
is from -10 to +80°ÀC. The
a