Most Pile Dynamics instruments read and process electronic signals
collected by various types of sensors. These accessories are manufactured and calibrated by Pile
Dynamics to meet strict durability and accuracy requirements. Pile Dynamics not only supplies all the
accessories used by its equipment, but also offers regular calibration and maintenance services.
The Pile Driving
Analyzer® (PDA) relies on accelerometers
and strain transducers
. Both types of sensors are
available in standard or waterproof versions. These rugged and precise devices have been in continuous
improvement since PDI sponsored their initial development in the 1970s. Strain transducers and
accelerometers either connect to cables that send data to the PDA or send data via a wireless transmitter
(PDA model PAX only). Cables come in various lengths and may be waterproofed for underwater use.
PDI also offers templates, anchors and protectors for sensor installation.
The
SPT Analyzer relies on data obtained by piezoresistive accelerometers
and by a rod
subassembly instrumented with
strain gages.
The Pile Integrity
Tester (PIT) requires either top
or side
mounted accelerometers, and, for
the PIT-FV model, an instrumented hammer. PDI offers various models of accelerometers and hammers, as
well as the wax used to attach them.
Cross-Hole Analyzer
(CHA) probes consist of a receiver and a transmitter in sturdy brass housing
. Cables are available in
various lengths.
Interchangeable transceivers
emit and receive signals that
enable the Acoustic Concrete Tester to determine
concrete thickness.
Other electronic accessories supplied by Pile Dynamics include proximity
switches
for the E-Saximeter and depth
sensors
for the CHA, E-Saximeter and PIR-A.
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