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Chapter 3: Installation 23
Fitting transducer
The ST60 Tridata instrument is supplied, with appropriatethrough-hull
Speed and Depth transducers.
Each transducer is supplied with detailedinstructions for installation and
maintenance. Before attempting to install atransducer, read these
instructions and theSite requirements for transducers described in this
Chapter.
Once you are satisfied you can meet all the installation requirements,
install the transducer in accordance with the accompanying installation
instructions.
Running transducer cable
Each transducer type has a 14 m (45 ft) cable fitted with spade terminals
for connectionto theST60 Tridatainstrument. Themanner in which you
run the cable will depend on thelocations of the transducers and
instrument. The following guidelines are provided:
• If the cable has to be fed through the deck, always use a proprietary
deck gland.
• Where cables arefed throughholes, always use grommets to prevent
chafing.
• Secure long cable runs so they do not present a hazard.
• Do not route the cable through bilges.
• Wherever possible, route the cable away from fluorescent lights,
engines, radio transmitting equipment, as these may cause interfer-
ence.
• The transducer cables are fitted with spade connectors for direct con-
nectiontothe rear of the instrument.However,it maybe necessary to
remove these to facilitate installation, e.g. if a cable has to be routed
through narrow apertures.Extra spade connectors are provided, to
replace any that are removed when running transducer cables. When
fitting spade connectors, prepare the cable as at (a) in the following
illustration, then fold back the wire strands and insert into the spade
connectoras at (b). Ensure the wire strands do not extendbeyond the
rearofthespadeconnectorinsulation,thencrimptheconnectortothe
wire.
81040_1.book Page 23 Thursday, November 7, 2002 10:21 AM