50-608 Kotron Model 811 RF Point Level Sensor
8
1.7
Wiring
1.7.1 Probe Wiring
All power and control connections are made at the terminal
strip within the amplifier enclosure, EXCEPT GROUND-
ING. Power grounding must be made at green ground
screw on the housing base. 16AWG is recommended for
power and control circuits.
NOTE: There are special wiring exceptions for intrinsic safety. Observe
all local electrical codes and proper wiring procedures.
1. Ensure that power source is turned off.
2. Unscrew and remove housing cover.
3. Remove electronic assembly by loosening three screws
in base.
4. Pull power supply and control wires through conduit
connection.
5.
Integral Mount Units
– pull probe cable through bottom
base connection.
Remote Mount Units
– pull triaxial probe cable through
bottom base connection.
6. Loosen securing screw on bottom of shield andopen the
protective cover on the amplifier board.
7. a.
Integral Electronics
– Attach white probe wire from
probe terminal on circuit board to probe screw on top
of the probe. Attach red Guard wire (if utilized). See
Figure 8 on page 5.
b.
Remote Electronics
– Attach the white and red leads
from the triaxial cable to appropriate connection on
circuit board. See Figure 12.
8. Ensure wiring is passed through bottom of electronic
assembly bracket.
9. Close and secure protective cover.
10. Slowly lower electronic assembly into housing base while
pushing slack into conduit.
11. Tighten three screws to housing base.
12. Connect electrical green ground wire to green ground
screw located in the base of the housing.
NOTE: If separate I.S ground is required in this application, then I.S.
ground (conventionally, blue #12 wire) should be connected to
the barrier at this time. Refer to NEC and appropriate Agency
guidelines.
