D-17-174-01-rev.3 17-174-01-rev.3 11/16/20
Survey: Installed in Lloyd’s Type-approved Tank, CS235
Sealcast™Depth Transducer
Model: M192
Patent http://www.airmar.com/patent.html
Tools & Materials
Safety glasses
Dust mask
Ear protection
Water-based antifouling coating (mandatory in salt water)
Cable gland
Junction box
Underwater lubricant such as Aqualube®
Hex wrench: 8M
Marine sealant
NOTE: The terms tank and housing are used interchangeably.
Antifouling Coating
Surfaces exposed to salt water must be covered with anti-fouling
coating. Use a water-based anti-fouling coating made for
transducers only. Never use ketone based paint, since ketones
can attack many plastics possibly damaging the transducer. It is
easier to brush on antifouling coating before installation, but allow
sufficient drying time.
Installation
CAUTION: Do not remove the rubber retaining rings.The
transducer’s mounting screws utilize rubber retaining rings to hold
the screws in place during installation.
CAUTION: Lubricate the screw threads.Lubrication is necessary
for removing the screws, if the transducer needs to be replaced.
1. Inspect the transducer, cable, and connectors carefully before
installing. All parts must be clean and free of oil, grease, paint,
solvents, and other foreign material that may hinder
performance.
2. Pull the tagged end of the transducer cable (P/N 22-136-01)
through the housing cable passage and the seamless pipe until
the cable stop is seated firmly against the cable passage
opening (Figure 1). Approximately 305mm (12") of cable will
remain in the housing with the male connector attached.
3. Use a suitable cable gland at the top of the pipe to support and
clamp the cable.
4. Secure the free end of the cable in a junction box located in a
dry, gas free environment within the ship.
5. Carefully push the socket head end of each mounting screw
into the counterbore of the transducer to fully expose the
threaded end of the screw. Sparingly apply a uniform coat of
Aqualube®or other similar underwater lubricant to the screw
threads.
6. Push the threaded end of each screw back into the transducer
until approximately 7mm (0.25") of the lubricated threads are
exposed and held in place by the retaining ring.
7. While supporting the weight of the transducer, plug the mating
connectors together until they are fully engaged. The connector
faces must touch.
8. Slowly rotate the transducer approximately 1 to 2 turns as it is
raised into the housing to properly dress the cable and joined
connectors in the cable storage cavity. The transducer face will
Figure 1. Installation
seamless
pipe
tank
cable
connectors
cable
cable
loop storage
cavity
stop
transducer
rubber
retaining
ring (3)
mounting
screw (3)
radiating face counterbore (3) flange
cable
passage
(housing)
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.
CAUTION: Never pull, carry, or hold the transducer
by the cable as this may sever internal
connections.
CAUTION: Never use solvents. Cleaner, fuel,
sealant, paint, and other products may contain
solvents that can damage plastic parts, especially
the transducer’s face.
CAUTION: Never power sand or pressure wash
the transducer. It may weaken the structure or
damage the internal components.
IMPORTANT:Please read the instructions
completely before proceeding with the installation.
These directions supersede instructions in your
instrument manual if they differ.
Copyright © 1999 Airmar Technology Corp.
OWNER’ S GUIDE & INSTALLATION INSTRUCTIONS
Record the information found on the cable tag for future reference.
Part No._________________Date___________Frequency________kHz
