50-604 Kotron Model 804 Sentinel II RF Level Transmitter
6
1. Remove amplifier from mounting bracket.
2. Install bracket in a location that is isolated from tempera-
tures below -40° F (-40° C) and above +160° F (+70° C)
and vibration which could cause mechanical damage.
The unit may be mounted up to 2500 feet (760 m) from
the probe assembly. Location should also offer easy access
for wiring, calibration, and maintenance.
3. Re-install amplifier onto mounting bracket.
4. Remove the electronics assembly from the housing by loos-
ening the four mounting screws.
5. Route the twisted shielded pair cable up through the hous-
ing base as shown in Figure 4 on page 5.
6. Remove the shield from the electronics assembly by
removing the top mounting screw and snapping the shield
off of the bracket.
7. Attach the twisted pair to the connection screws on the
daughter board (refer to Figure 4 on page 5) as follows:
«
Red wire to the + (positive) screw terminal;
«
Black wire to the – (negative) terminal;
«
Shield to the shield terminal.
8. Dress wires and reassemble shield to the bracket. Reinstall
the electronics assembly into the housing base.
9. Replace the housing cover and proceed with the wiring of
the preamplifier.
2.2.4.2 Preamplifier
1. Thread probe into mounting bushing on tank.
2. Tighten securely, making certain that the wrench is applied
only to the lower probe nut. Refer to Figure 4 on page 5.
3. Screw housing on probe until hand tight. Housing may
be wrench tightened to align conduit connection with
conduit.
4. Connect the white wire from the remote KISO board to
the probe connection screw.
5. Attach the twisted pair to the remote KISO board (refer to
Figure 4 on page 5) as follows:
«
Red wire to the + (positive) terminal of TB2;
«
Black wire to the – (negative) terminal of TB2;
«
Shield to the green ground screw, inside of the
housing base.
6. Proceed to
Wiring
section on page 9.
Figure 5
Remount Mount with
Flexible Probe Wiring
– (Black)
– (Black)
Top view
Preamplifier
Side view
Preamplifier
+ (Red)
Shield
connected
to green
ground
screw
Probe
wire
(white)
+ (Red)
Shield
connected
to green
ground screw
Side view
Main Amplifier
Probe wire
(white)
(Daughter
board
under shield)
