Burkert 8690 Manuel D'utilisation page 10

electrical data
The pilot valve with ignition protection type intrinsic safety Ex ia IIC
must only be connected to certified, intrinsically safe electric circuits
with the following maximum values.
Explosion group
Category
Temperature class
Max. permissible input voltage (Ui)
Max. permissible input current (Ii)
Max. permissible input power (Pi)
Power supply voltage:
For the maximum permissible voltages and the corresponding
maximum permissible short-circuit currents for the respective
explosion groups, please see standard EN 60079-11.
Some value pairs for the explosion group IIC are listed as an
example for every ignition protection type.
Valve with ignition protection type intrinsic safety Ex ia IIC.
Voltage
value 15 18 20
[V] = ui
current
value 0,9 0,44 0,309 0,224 0,158 0,120 0,101 0,073
[a] = ii
Tab. 3: Value pairs
10
IIC
ia
T6
35 V
0,9 A
see "Tab. 1"
22 25 28 30
english
Sensor
electrical data
Supply and signal circuit:
In ignition protection type intrinsically safe Ex ia IIC, for connection
only to certified intrinsically safe circuits with the following max.
values:
permissible
ambient
category
temper-
ature
+55 °C II 2G
Tab. 4: Temperature class and circuit parameters
Effective internal capacitance Ci and effective internal inductance Li
ci [nf]
150
Tab. 5: Effective capacitance and inductance
35
Type 8690 Ex
Basic safety instructions
temper-
ature ui [Vdc] ii [ma]
class
T6 20 60 mA
li [µh]
150
pi [mW]
200