Strain And Acceleration Sensors

Strain Transducers and Accelerometers manufactured by Pile Dynamics collect the essential data for use with the Pile Driving Analyzer® (PDA) and SPT Analyzer.

Reliable results start with reliable measurements: The axially accurate strain and acceleration signals collected at high microstrain and “g” levels are converted by the PDA (or the SPT Analyzer) to force and velocity records. These records are then used in evaluations of foundation capacity, foundation integrity,
hammer efficiency and pile driving stresses. Accuracy matters, but so does convenience. PDI sensors are fast and simple to install and remove. With proper care, both accelerometers and strain transducers have a long useful life.

Sensors are quickly bolted to any type of foundation, usually about 2 to 3 diameters below the top. Strain transducers are attached symmetrically to account for bending effects. Accelerometers should be attached near the strain transducers. Attachment is typically performed with drilled and taped holes for steel pipe piles, clearance holes with bolt/nut for steel H piles, lag bolts for timber piles, or by installing embedded anchors for concrete piles and shafts.