50-621 Kotron Sentinel Models 822, 832 and 842 RF Point Level Switches
6
To install a probe:
1. Attach the weight or anchor assembly to the end
of the probe. Insert the probe through the vessel’s
mounting connection, and feed the cable into the
vessel. Do not allow the probe to scrape against the
connection threads.
2. Secure the anchor assembly (if used), to the bottom of
the vessel.
3. Apply thread sealant to the mounting nut. Screw the
mounting nut into the mounting connection until tight.
4. Remove the Mylar housing insulator located over the
clamp. DO NOT DISCARD.
5. Loosen both socket head screws from the clamp. Pull the
clamp and Teflon
®
retaining bushing off of the probe.
6. While holding on to the probe cable, loosen the upper
packing gland nut. DO NOT ALLOW THE PROBE
CABLE TO FALL INTO THE VESSEL.
7. Pull the excess cable up through the packing gland nut
until the cable is taut. Tighten the packing gland nut.
8. Cut the cable 1.35" (34 mm) above the packing gland nut
and strip off 1.25" (32 mm) of insulation.
9. Slide the Teflon
®
retaining bushing onto the cable and seat
it into the packing gland nut. Slide the clamp onto the
cable and seat it against the Teflon
®
retaining bushing.
10. Tighten both socket head screws, on the clamp, to approx-
imately 35 in/lbs of torque. Slip the Mylar
®
insulator over
the clamp.
Caution:
Check probe terminal connection carefully to be certain
lug will not short to packing gland or interfere with assem-
bly of amplifier housing to probe.
11. Locate the white wire which is fastened to the probe
terminal (P), Connect the free end of this wire to the
probe connection screw.
12. Proceed to
Section 1.7, Wiring
.
MYLAR INSULATOR
PROBE WIRE SCREW
CLAMP
SET SCREW
SEAL
FLARE
CLAMP
RETAINING
BUSHING
PROBE
CABLE
3/8-16-UNC-2B
LOWER
MOUNTING NUT
HALF
UPPER
MOUNTING NUT
HALF
Figure 10
Integral Mount with Flexible Probe