Siemens SITRANS Probe LU Quick Start Manual page 7

Wiring
1
Power
WARNINGS:
DC terminals shall be supplied from an SELV
with IEC-1010-1 Annex H.
All field wiring must have insulation suitable for rated voltages.
Connecting SITRANS Probe LU
Notes:
• For detailed information on Intrinsically Safe set-ups, please see the full manual.
• Use shielded, twisted pair cable (wire gauge AWG 22 to AWG 14 /0.34 mm
• Separate cables and conduits may be required to conform to standard instrumentation
wiring practices, or electrical codes.
• The non-metallic enclosure does not provide a continuous ground path between conduit
connections: use grounding-type bushings and jumpers.
cover screws
threaded
connection
3. Strip the cable jacket for approximately 70 mm (2.75") from the end of the cable, and
thread the wires through the gland
4. Connect the wires to the terminals as shown above: the polarity is identified on the
terminal block.
5. Tighten the gland to form a good seal.
6. Close the cover and tighten screws: please do not overtighten screws.
Recommended torque is 1.1 to 1.7 N-m (10 to 15 in-lb).
1.
Safety Extra Low Voltage
2.
If cable is routed through conduit, use only approved suitable-size hubs for waterproof application.
7ML19985QR81
hinged lid
water-
tight gland
2
.
SITRANS Probe LU – QUICK START MANUAL
1
source in accordance
2
to 2.08 mm
terminals for
loop current
cable
2
).
Page EN-5