Honeywell SLG 700 User Manual page 53

SLG720
The inner rod is comprised of 1.0m rod segments and one rod end. The rod end has a
notch at one end to retain the final PTFE spacer. Depending on the length of the probe
there may be 0 to 6 1.0m rod segments. As with the rod probe, the rod segments are
attached to each other by way of a stud and lock washer, see Figure 3-8. In the coaxial
probe construction a spacer is placed at each joint, retained by the lock washer.
If the coaxial probe is 2.0m or shorter it will come with a single outer tube. If the probe
length is longer than 2.0m, the outer tube will be supplied in segments. There are three
types of outer tube segments:

Starter segment: which has an internal thread to attach to the process connector.

Extension segment: which has external threads on both ends.

End segment: which has an external thread on one end.
Probes over 2.0m in length will always have one "starter" and one "end" segment, along
with 0 to 2 extension segments in between. The tubes are connected to each other by way
of a threaded tube coupler. It is recommended to build the coaxial probe 2m at a time.
That is, attach two 1.0m rod segments together, place the spacer on the lock washer
shoulder and slip an outer tube over the rod. Repeat until the probe is together.
Refer to Figure 3-8 for the SLG720.
Probe Length ≤ 1.0m:
Step
1
Note: Tighten rod connection point to the following torque:
2
3
Revision 7
Fully thread the nut onto the central conductor of the process connector. Place a
lock washer between the locknut and the rod segment and torque the nut against
the rod segment and lock washer to secure the connection.
 SLG720 6.0Nm (4.4ft-lbs).
Place a "U-shaped" spacer onto the groove at the bottom of the rod.
Slip the coaxial outer tube over the rod and spacer and tighten to the process
connector.
Note: Tighten connection point to the following torque:

SLG720 30Nm (22ft-lbs).

It is recommended that a process compatible thread locking compound (i.e.
Loctite 242) be used on the outer conductor threaded joints.
SLG 700 SmartLine Level Transmitter User's Manual
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