Dwyer UFB - Manual (Page 10)

2: Installation
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2: Installation
2.1 Safety Precautions and Warnings
2.2 Installing the UFB Instrument
2.2.1 Positioning the instrument
The UFB instrument should be installed as close as conveniently possible to the pipe-mounted ultrasonic
sensors. Standard transducer cables are 16.5 ft (5 m) in length with 33 ft (10 m) cables being optionally available.
Where, for operational reasons, it is not possible to mount the instrument this close to the sensors, bespoke
cables of up to 328 ft (100 m) can be provided. Consult Dwyer for further information and availability.
A suitable mains supply must be available to power the instrument (an optional 24V (ac/dc) supply module is
available). The external supply must be suitably protected and connected via an identifiable isolator. A 500 mA
fuse is fitted internally in the instrument’s input supply line.
WARNING
LETHAL VOLTAGES
You may be exposed to potentially lethal (mains) voltages
when the terminal cover of this instrument is removed.
Always isolate the supply to this instrument before removing
the terminal cover.
WARNING
LETHAL VOLTAGES
This instrument must be installed by an electrically qualified
technician aware of the potential shock hazards presented
when working with mains powered equipment.
WARNING
SUPPLY EARTHING
If the equipment is powered from a 24 Vac supply then the
supply must be isolated from earth.
Caution
IP65 Enclosure Protection
Blanking plugs are fitted to the cable glands on leaving the manufacturer.
In order to preserve the enclosure’s IP65 rating, ensure that the blanking plugs
remain fitted in any unused cable gland.