4 Installation with NPS-NPT coupler
This section gives instructions of properly installing the coupler to prevent the water ingress.
The models are IP66-rated to prevent water from entering the camera. However, water may
still enter the camera if the coupler connecting with camera and camera mounting are
incompatible.
The tube adapter thread offered with camera is NPS 1.5” type, which is a straight thread in and
outside. (https://en.wikipedia.org/wiki/National_pipe_thread) The proper coupler adapter
is essential to ensure the same thread in both end.
NPT-NPS aluminum coupler is specifically designed to create a watertight seal between the
male threaded NPT camera mount and the male threaded NPS pipe adapter. In addition to the
aluminum coupling the kit contains a high-quality Polyurethane Adhesive Sealant product.
3M 560 is a one component, moisture curing product which forms permanent elastic bonds on
a wide variety of materials including plastics, metals, fiberglass, and wood. It is formulated to
have a wide variety of Shore A hardness, open times, and performance parameters to meet
many application needs.
4.1 Before installation
Surfaces to be sealed or bonded should be clean and dry. Surfaces should be free from grease,
mold release, oil, water/condensation, and other contaminants that may affect the adhesion of the
sealant. Abrading with 180 to 220 grit abrasive followed by a solvent wipe will improve the bond
strength but is not specifically required in this application. Suitable solvents include 3M™ Adhesive
Remover or methyl ethyl ketone (MEK).*
• When using solvents, use in a well-ventilated area. Extinguish all sources of ignition in the
work area and observe product directions for use and precautionary measures. Refer to
product label and MSDS for further precautions. Always pre-test solvent to ensure it is
compatible with substrates.
• Alcohol will interfere with the curing process and extra care must be taken when using
alcohol as a cleaning solvent to prevent any contact with the sealant.
4.2 Application
Loading the applicator gun: make sure the applicator is setup with correct plunger attachment
for cartridge.
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