General Monitors FL3112, Руководство пользователя

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Model FL3112
8
3.3 Detector Installation
The Model FL3112 Detector should be mounted pointing downward so that dust/moisture
will not accumulate on the IR window. The detector(s) should be mounted in locations
which will inhibit people or objects from obscuring the detector’s Cone of Vision.
Cable glands and stopping plugs should be installed with the o-rings supplied with the
FL3112. It is recommended to fit boots over cable glands to prevent water ingress at the
cable-to-gland junction.
Mounting hardware should be used as shown in figure 3-B. The overall dimensions of the
detector and mounting hardware is also shown.
3.4 Interconnecting cable Guidelines
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The FL3112 requires an interconnecting cable with an overall screen (shield) and
armour. Cables to BS5308 Part 2, Type 2 or equivalent are suitable.
•
Interconnecting cables should be segregated from power and other “noisy” cables.
Avoid proximity to cables associated with radio transmitters, welders, switched mode
power supplies, inverters, battery chargers, ignition systems, generators, switch
gear, arc lights and other high frequency or high power switching process
equipment. In general, maintain a separation of at least 1m between instrument and
other cables. Greater separation is required where long parallel cable runs are
unavoidable. Avoid running instrument cable trenches close to lightning conductors
earthing pits.
•
Complete all cable insulation tests before connecting the cable at either end.
•
General Monitors do not recommend the use of cable shoes or crimps on any
junction box or housing wiring terminals. Poor crimping can cause bad connection
when unit experiences temperature variations. We therefore recommend good
practice is to just terminate cable.