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Limitless™ WPMM Series
7.5
Environmental Usage/Concerns
7.5.1 Choosing an Antenna/Cable to Meet Application Exposure Conditions
There is no antenna or cable design impervious to every environmental condition that it could be exposed to. So it is
suggested that the application environment be reviewed as follows:
Step 1
Determine where the antenna will be installed and the application conditions: indoor, outdoor, or limited
outdoor exposure. Even if the antenna is going to be used indoors, an outdoor antenna may be more
suitable (i.e., resistant to fluids, rigid construction, etc.)
Step 2
Determine what the antenna may be subjected to (i.e., fluids, chemicals, oils, wind, shock, vibration, etc.)
Step 3
A. Review antenna and/or cable materials (listed in Section 6.1) against resistance to chemicals and
fluids. If choosing an adhesive mount, adhesive resistance testing may be necessary.
B. If shock, vibration, wind, rain, sleet/snow, etc. are in the application, choose an antenna rated for
outdoors and has a rigid design as defined in Sections 6.1 and 6.2.3.2.
Step 4
The WPMM's enclosure is designed to meet IP67 seal requirements. The electrical connections for the
power supply and NPN output are not protected against exposure to liquids. This step may be required to
provide an extra level of protection, especially if the application may be subjecting antennas and cables to
liquids. The RP-SMA connections, tilt/swivel joints, and cable entrances are potential leak paths that
could lead to corrosion. The following procedure is one way to provide extra protection to these
connections and joints.
Ensure that the area applying tape to is clean from contaminants by first cleaning with mild
detergent/water and completely dry. Follow with an isopropyl alcohol wipe of the area.
Layer 1: Wrap a layer of polyvinyl chloride insulating tape
Layer 2: Wrap a layer of Rubber splicing tape i.e. Scotch™ 23
Layer 3: Wrap a layer of UV stable polyvinyl chloride insulating tape
Layer 1 allows the user to remove Layer 2 for connector inspection, antenna replacement,
repositioning of the tilt/swivel antenna, etc.
In the end, the antenna/cable choice may need to be tested in the actual application conditions to prove suitability.
7.5.2
Outdoor Antenna Installations - Lightning Concerns
Outdoor antenna installations can lead to the possible damage caused by nearby lightning strikes that induce
charges or surges on the antenna and/or antenna extension cables.
A lightning arrestor such as the AL-NFNFB-9 from Hyperlink Technologies can be reviewed against application
requirements.
ATTENTION
National, local and/or regulatory agencies may require the use of a lightning arrestor and possibly
other requirements for an antenna system installation. It is recommended that the customer review
and adhere to these requirements.
30
Honeywell Sensing and Control
50051864
Issue 2
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