BOREAL LASER GasFinder FC, Руководство по эксплуатации

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3.10
Boreal Laser Inc. GasFinderFCr Operation Manual — Installation July 17th 2017
Cable connections
Fibreoptic Cables
Caution : the laser output from the control unit has a very low power and will not damage
eye tissue. However, as with all laser instruments, it is prudent to avoid looking directly
into the laser beam. Note that the laser beam is infra-red and is not visible to the eye.
Tools Required: Electrician’s hand tools. The Boreal Laser Inc. Diagnostic and
Troubleshooting Kit is recommended.
Cleanliness
It is of paramount importance when dealing with fi bre optic cables
that clean work practices are followed. The core of a single mode
optical fi bre is 9 microns in diameter, and a speck of dust can
easily block the signal. It is important to clean the connectors
before inserting them into the couplings. This is done by holding
the end of the connector perpendicular to a clean section of tape
and describing a fi gure of eight movement two or three times. The
cleaning tape is held in a dispenser which exposes a new section
of tape as needed. Do not use alcohol as it leaves a residue.
Dignostic and Troubleshooting Kit
The Diagnostic and Troubleshooting Kit contains a Remote Light Meter
(RLM), Power Meter, Visible Laser, Infra Red (IR) card, cables and
cleaning tape.
Fibreoptic Connections
The fi breoptic couplings are FC/APC and are used to connect
two FC/APC fi bre connectors. There is a key on the connector
barrel to align with the keyway in the coupling. The key and
keyway must be engaged in order for the connection to be made
correctly.
Cables
The laser output from the GasFinderFCr is taken from the FC/APC connector on the rear
panel of the instrument. The connection to the Remote Head or Duct
Probe is made with a single mode fi bre-optic cable which may be a
single fi bre or a dual fi bre, in which one is used as a spare, or via a
multi-fi bre cable and a splice box.
The fi bres can be purchased with the ends pre-terminated or a multi-
fi bre cable can be spliced to a pre-terminated ‘pig tail’ on site by a
contractor who specialises in fi bre-optic FC/APC cable splicing.
Special care is required when installing the cables as too much strain will break them or cause
large losses. Cable tray is easier to work with than conduit. Cable ties should be fi rm but not
tight. Any bending should be limited to a 30mm radius. Nylon
Spiwrap cable protector is very
useful for supporting cable and preventing sharp bends.
Splice Box
Diagnostic and
Troubleshooting Kit
Cleaning connectors
Coupling & Connectors
Keyways
Key Key