804-R010-330 datasheet(9/32 Pages) MAGNETROL

9 / 32 page

50-604 Kotron Model 804 Sentinel II RF Level Transmitter

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)

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)

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