Kongsberg Simrad ST90, Reference Manual

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Note
The transducer is covered with a thick red or black protective coating made of a special
plastic type. The protective coating is a vital part of the transducer. It is very important
that neither this coating nor the internal parts of the transducer are damaged during the
handling, installation or cleaning. Any holes and/or scratches in the transducer surface will
allow water to penetrate the transducer. If a leak occurs, the transducer must be replaced.
A Lower part of shaft sleeve
B Lower part of transducer shaft
C Transducer with its red protective coating
The transducer is mounted at the bottom end of the hull unit’s
transducer shaft. This allows the transducer to be lowered into
the water for operational use, and retracted for protection when
the ST90 system is turned off. By lowering the transducer into
the water, you may also be able to reduce the noise created by the
laminar flow of water along the hull.
The transducer is large and heavy. It contains 000 individual
elements.
Rules for transducer handling
A transducer must always be handled as a delicate instrument. Incorrect actions may damage
the transducer beyond repair. A physical blow to the transducer face may easily damage one
or more elements. Observe these transducer handling rules:
•
Do not
activate the transducer when it is out of the water.
• Do not handle the transducer roughly. Avoid impacts.
• Do not expose the transducer to direct sunlight or excessive heat.
• Do not use high-pressure water, sandblasting, metal tools or strong solvents to clean
the transducer.
• Do not damage the outer protective skin of the transducer.
• Do not damage the outer protective skin of the transducer face.
•
Do not
step on the transducer cables.
• Do not damage the transducer cables. Avoid exposure to sharp objects.
Related topics
Simrad ST90, page 17
System units, page 23
Simrad ST90