Airmar HT200 - Manual

17
-4
22
-0
1 re
v.
0
4
02
/01
/11
Thru-Hull, Retractable with Valve
Temperature or Speed Temp Sensor
Models: HT200, ST850
U.S. Patents: 7,110,908; 7,352,171. UK 2 409 527
Pretest
Connect the sensor to the instrument. Check for the approximate air
temperature. If it has a paddlewheel, spin it and check for a speed
reading. If there is no reading(s) or it is inaccurate, check the connections
and try again. If there is still a problem, return the product to the place of
purchase.
Record the information found on the cable tag for future reference.
Part No._________________Date___________
Applications
• Plastic housing recommended for fiberglass or metal hulls only.
Never install a plastic housing in a wood hull since swelling of the wood
may overstress the plastic causing a fracture.
• Bronze housing recommended for fiberglass or wood hull only.
Never mount a bronze housing in a metal hull because electrolytic
corrosion will occur.
• Stainless steel housing compatible with all hull materials.
Recommended for aluminum hulls to prevent electrolytic corrosion
provided the stainless steel housing is isolated from the metal hull.
Tools & Materials
Safety goggles
Dust mask
Water-based anti-fouling paint (mandatory in salt water)
Electric drill with 10mm (3/8") or larger chuck capacity
Drill bit
3mm or 1/8"
Hole saw: 51mm or 2" (plastic or metal housing in non-metal hull)
57mm or 2-1/4" (stainless steel housing in a metal hull)
Countersink tool (installing a flush housing)
Sandpaper
Mild household detergent or weak solvent (such as alcohol)
File (installation in a metal hull)
Marine sealant (suitable for below waterline)
Slip-joint pliers (installing a metal housing)
Grommet(s) (some installations)
Cable ties
Installation in a cored fiberglass hull (see page 4)
Hole saw for hull interior 60mm or 2-3/8"
Fiberglass cloth and resin
or Cylinder, wax, tape, and casting epoxy
Mounting Location
CAUTION: Do not mount in an area of turbulence or bubbles near water intake
or discharge openings; or behind strakes, fittings or hull irregularities.
CAUTION: Never mount the speed sensor directly ahead of a depth
transducer, since turbulence generated by the paddlewheel’s rotation will
adversely affect the transducer’s performance, especially at high speeds.
Mount side by side.
Choose an accessible spot inside the vessel. Allow a minimum of 280mm
(11") of headroom for the height of the housing, tightening the nuts, and
removing the insert.
HT200—The sensor must be in contact with the water at all times.
ST850—Turbulence-free water must flow over the paddlewheel at all boat
speeds.
• Displacement hull powerboats—Locate amidships near the centerline.
• Planing hull powerboats—Mount well aft to ensure the sensor is in
contact with the water at high speeds.
• Fin keel sailboats—Mount on or near the centerline and forward of the
fin keel 300–600mm (1–2').
• Full keel sailboats—Locate amidships and away from the keel at the
point of minimum deadrise.
INSTALLATION INSTRUCTIONS OWNER’S GUIDE &
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 goggles and a dust
mask when installing.
WARNING: The valve is not a watertight seal! Always
use the insert or the blanking plug secured with the
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 sensor 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.
WARNING: Stainless steel housing in a metal hull—
Be sure the washer contacts the hull. Do not tighten
the hull nut with the washer against the isolation
bushing as the housing will not be firmly installed.
CAUTION: Never install a metal housing in a vessel
with a positive ground system.
CAUTION: Never use a fairing with a plastic housing;
the protruding sensor would be vulnerable to damage
from impact.
CAUTION: Never pull, carry, or hold the sensor by its
cable; this may sever internal connections.
CAUTION: Never use solvents. Cleaners, fuel,
sealants, paint, and other products may contain strong
solvents, such as acetone, which attack many
plastics, greatly reducing their strength.
CAUTION: A stainless steel housing must be isolated
from a metal hull to prevent electrolytic corrosion.
IMPORTANT: Please read the instructions completely
before proceeding with the installation. These
instructions supersede any other instructions in your
instrument manual if they differ.
low profile
P17 housing
plastic
ST850
low profile
P17 housing
plastic
HT200