
7.
Pressure Switches in Intrinsically Safe Circuits (Ex-i)
32
MU2B-0238GE51 R0616D
Wiring parameters for use in intrinsically safe
electrical circuits
U
i
14 VDC
R
i
1.5
kOhm
L
i
100 µH
C
i
1
nF
Type of Ex-protection
Gas:
II 1/2G Ex ia IIC T6 Ga/Gb
Dust:
II 1/2D Ex ia IIIC T80°C Da/Db
Approvals
ATEX:
IBExU12ATEX1040
IECEx:
IECEx IBE 14.0077
CAUTION:
Never operate pressure switches with
resistor-combinations without suitable
switching amplifier. Device can overheat
and burn caused by overload of resistor
combination.