Electrical Mounting; Connection Assembly (Model Gd-20-D); Pin Assignment (Model Gd-20-D); Requirements For Shielding And Grounding - WIKA GD-20 Series Operating Instructions Manual

5. Commissioning, operation

5.2 Electrical mounting

EN

5.2.1 Connection assembly (model GD-20-D)

Use a cable consisting of shielded twisted pair data lines with suitable characteristics
■
for the particular operating conditions.
Select a cable diameter that matches the cable bushing of the connector. Make sure
■
that the cable gland of the mounted plug has a tight fit and that the seals are present
and undamaged. Tighten the threaded connection and check that the seal is correct-
ly seated, in order to ensure the ingress protection.
Make sure that no moisture enters at the cable end.
■
Installation example for model GD-20-D
End piece

5.2.2 Pin assignment (model GD-20-D)

Circular connector M12 x 1 (5-pin)
1
2
3
4
5

5.2.3 Requirements for shielding and grounding

Only use shielded cables and connect the shield on one side to the read-out unit.
■
The gas density sensor must be grounded via the process connection.
■
Ensure that no earth circuits can occur.
■
14
WARNING!
The instrument shield does not act as a protective conductor for protection
of personnel, rather as a functional ground in order to shield the instru-
ment from electromagnetic fields.
Y-connector
Sensors
- -
U Supply voltage
+
U Mass
-
A Signal RS-485
B Signal RS-485
WIKA operating instructions gas density sensor, model GD-20
5 m cable
Gateway