21
5 Connecting to power supply
OPTISOUND 3020 C • Two-wire 4 … 20 mA/HART
30507-EN-190318
11. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
12. Screw the housing lid back on
The electrical connection is finished.
5.3 Wiring plan, single chamber housing
The following illustrations apply to the non-Ex as well as to the Ex-ia
version.
1
4
4
4
2
3
Fig. 18: Material versions, single chamber housing
1 Plastic
2 Aluminium
3 Stainless steel
4 Filter element for air pressure compensation
I2C
Display
2
2
Fig. 19: Electronics and connection compartment, single chamber housing
1 Spring-loaded terminals for voltage supply
2 Ground terminal for connection of the cable screening
Housing overview
Electronics and connec-
tion compartment