Connection Procedure; Wiring Plan, Single Chamber Housing - KROHNE OPTISWITCH 5300 Handbook

5 Connecting to power supply
Connection cable
for Ex applications
20
rating), find out which cable outer diameter the cable gland is suitable
for.
•
5 ... 9 mm (0.20 ... 0.35 in)
•
6 ... 12 mm (0.24 ... 0.47 in)
•
10 ... 14 mm (0.40 ... 0.55 in)
Use a cable gland fitting the cable diameter.
In hazardous areas, use only approved cable connections for OPTIS-
WITCH 5300 C .
Take note of the corresponding installation regulations for Ex applica-
tions.
Cover all housing openings conforming to standard according to
EN 60079-1.
5.2

Connection procedure

With Ex instruments, the housing cover may only be opened if there is
no explosive atmosphere present.
Proceed as follows:
1. Unscrew the housing lid
2. Loosen compression nut of the cable gland and remove blind
plug
3. Remove approx. 10 cm (4 in) of the cable mantle, strip approx.
1 cm (0.4 in) of insulation from the ends of the individual wires
4. Insert the cable into the sensor through the cable entry
5. Open the terminals with a screwdriver
6. Insert the wire ends into the open terminals according to the wir-
ing plan
7. Tighten the terminals with a screwdriver
8. Check the hold of the wires in the terminals by lightly pulling on
them
9. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
10. 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-d
version.
OPTISWITCH 5300 C • Two-wire 8/16 mA