The Pile Driving Analyzer^® (PDA) reads and processes electronic signals collected by Accelerometers and Strain Transducers .

Both types of sensors are available as Traditional (send data to the PDA via cables) or Smart (know their calibration and send data to a PDA model PAX via Wireless Transmitters). Accelerometers may be Piezoelectric (PE) or Piezoresistive (PR, recommended for all types of foundations and for calibration of SPT rods). All sensors are available in standard or waterproof versions.

Wireless Transmitters for Smart Sensors allow the PDA to be placed up to 100 m (more than 300 ft) away from the foundation being tested, and include a rechargeable 8.5 hour life battery. An extended battery pack for up to 24 hour continuous run time is also available .

Cables for Traditional sensors come in various lengths and may be waterproofed for underwater use.

PDI also offers templates, anchors and protectors for sensor installation.