Airmar Smart CS4500 Installation Instructions Manual

OWNER'S GUIDE & INSTALLATION INSTRUCTIONS
Thru-Hull:
Retractable with Valve
Ultrasonic Speed & Temperature Sensor
Model: CS4500
Patent http://www.airmar.com/patent.html
Follow the precautions below for optimal product
performance and to reduce the risk of property
damage, personal injury, and/or death.
WARNING: Always wear safety glasses, a dust mask,
and ear protection when installing.
WARNING: The power must be 'OFF' before proceeding.
WARNING: The power supply voltage must be
WARNING:
A safe installation requires
blow fuse or circuit breaker.
WARNING: The ultrasonic insert/blanking plug must
be installed in a housing with a valve. When the valve
assembly is removed, always insert the short
emergency plug secured with the cap nut and safety
wire for a watertight seal.
WARNING: The valve is not a watertight seal!
Always install the ultrasonic insert or the long blanking
plug secured with the retaining pin, safety rings, and
safety wire for a watertight seal.
WARNING: The o-rings must be intact and well
lubricated to make a watertight seal.
WARNING: Always attach the safety wire to prevent
the insert or blanking plug from backing out in the
unlikely event that the cap nut fails or is screwed on
incorrectly.
WARNING: Immediately check for leaks when the
boat is placed in the water. Do not leave the boat
unchecked for more than three hours. Even a small
leak may allow considerable water to accumulate.
CAUTION: Never pull, carry, or hold the sensor by its
cable; this may sever internal connections.
CAUTION: Plastic housing—Never use a fairing with
a plastic housing; the protruding sensor would be
vulnerable to damage from impact.
CAUTION: Metal housing—Never install a metal
housing on a vessel with a positive ground system.
CAUTION: The arrow on the top of the ultrasonic
insert must point forward toward the bow to align with
the water flow.
CAUTION: The bottom of the ultrasonic insert must be
flush with the bottom of the housing.
CAUTION: Never use solvents. Cleaner, fuel, sealant,
paint, and other products may contain solvents that can
damage plastic parts, especially the sensor's face.
IMPORTANT: The sensor must be in good contact
with the water at all times.
IMPORTANT: Read the instructions completely
before proceeding with the installation. These
instructions supersede any other instructions in your
instrument manual if they differ.
Record the information found on the cable tag for future reference.
Part No._________________Date___________
Smart Sensor
™

Applications

• Not recommended for boats designed to pull air under the hull.
• Plastic housing recommended for fiberglass or metal hull only.
10-15VDC
Never install a plastic housing in a wood hull since swelling of
a 0.5 amp fast
the wood may fracture the plastic.
• Bronze housing recommended for fiberglass or wood hull only.
Never install a bronze housing in a metal hull because
electrolytic corrosion will occur.

How the Ultrasonic Speed Sensor Works

The speed sensor uses ultrasonic pulses to collect echoes from
small particles in the water as they pass under two transducers
embedded in the insert (Figure 1). These transducers monitor the
particles in their respective beams. As the boat travels through the
water, both transducers 'view' the same stream of particles.
Because it takes time for particles to travel between the two
transducers, the aft transducer detects the particles later than
does the fore transducer. By measuring this time lapse, the
instrument calculates the boat speed. If the boat is airborne, even
for a short time, or in highly aerated water, the sensor will
measure an incorrect speed.
Tools & Materials
Safety glasses
Dust mask
Ear protection
Water-based anti-fouling paint (mandatory in salt water)
Electric drill with 10mm (3/8") or larger chuck capacity
Drill bit
Hole saw
Sandpaper
3mm or 1/8"
51mm or 2"
scanning transducer
hull
FORE AFT
vessel direction
particle stream
Figure 1. Monitoring particles in the water
Copyright © 2002 Airmar Technology Corp.