2-Pack Analyzer System
3–24 4900002256 rev. B 4-13-21
Toinstalltheheatedlineseal
The heat-shrinkable entry seal Model NUS-4X supplied by SpectraSensors
provides a waterproof fitting where the heat trace bundle enters the SCS
enclosure. This seal consists of a three-part assembly; a rigid plastic nylon nut,
an O-ring and the heat-shrinkable molded area.
Tools needed
• Spanner wrench
• Heat gun
• RTV sealant
• Cable cutter
Use the following instructions to install this seal.
1. From the inside of the enclosure, place the rigid plastic nylon
threaded nut through the access hole to the exterior so that the nut
flanged end is up against the inside of the enclosure.
2. From the outside, place the O-ring over the nut threaded end and
position against the enclosure.
3. Screw the shrinkable, internally threaded nose onto the rigid nut and
tighten using an appropriate sized spanner wrench.
Installing the heat trace bundle
Refer to the heat trace bundle manufacturers website for instructions on
installing the heat trace bundle.
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