User`s manual

Diagnosis and Troubleshooting 10-13
December 2003
Wetted Transducer Problems (cont.)
3. INTERNAL DAMAGE
An ultrasonic transducer consists of a ceramic “crystal” bonded
to the transducer case. The bond between the crystal and the case
may be damaged by extreme mechanical shock and by
temperature extremes. The crystal itself can also be damaged by
the same conditions. The internal wiring can be corroded or
shorted if contaminants enter the transducer housing.
4. PHYSICAL DAMAGE
Transducers may be physically damaged by dropping them onto a
hard surface or striking them against another object. Usually the
connector on the transducer is the part that is damaged, as it is the
most fragile. Minor damage may be repaired by carefully bending
the connector back into shape. If the connector cannot be
repaired, replace the transducers. Note that transducers must be
replaced in pairs. Before replacement, make sure that the
transducer number in the programmed parameters is the one
engraved on the new transducers (see Chapter 3, Programming
Site Data).