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Piletest’s GPC is the next generation of dynamic pile testing systems. It is designed with simplified software and higher ease of use than past systems. Professor George G. Goble, the pioneer of dynamic pile analyzers, designed the GPC system

  • Lossless Wireless Transmission.

  • Simple single (data) main unit for both sides of the pile. 

  • Comboducer - Straingauge + Accelerometer transducers are combined on a single bolt-on sensor.

  • Dual system option for four (4) Comboducers (Eight (8) channels).

  • ASTM D4945 Standard compliant.



You need to connect only two dual-purpose sensors (Comboducers) to test a driven pile dynamically while being hammered into the ground. The system main unit can be attached to the pile under test and sends all the monitored data to your computer via lossless wireless communication. This concept makes the construction site work much easier and faster to operate. To measure four (4) sides of a pile, two main unit systems can be used concurrently with a dual WiFi connection computer.

Easy to Operate Dynamic Pile Testing, with Intuitive Software and Combo Sensors (Comboducers) 


  • Lossless wireless communication, 100% reliable.

  • The GPC main unit can tolerate the harsh conditions of the pile drive (hammer) machine

  • 3-year warranty!

  • Rugged connectors and sensors

Easy to Use

  • Single bolt sensor for two transducers, with Comboducer = Accelerometer + Staingage

  • One operator can handle the lightweight GPC system.

  • Easy and Simple to use software. 

Top Perfromance

  • Dual channel lossless Wifi connection

  • N_GAPA - Top-notch Automatic Pile Analysis software for signal matching analysis, proven to be equal to and faster than CAPWAP

  • Real-time analysis of non-uniform piles, in the field

GPC- Technical Specifications







Temperature range



Industrial grade DAC enclosed in a durable aluminum housing.

82 mm x 108 mm x 280 mm (Ver 1.4)

1.9kg (Ver 1.4)

10.0kg (Typical shipping)

Operating : -20°C to 55°C

Storage : -40°C to 80°C

90% (non-condensing)

Sensor: IP62, 90% condensation (light rain)

Main unit: IP61, Protected from condensation





Rechargeable Lithium Ion battery, 2 hours charge time 

(Supports a full day of typical use 5-8 hours)

100-240V AC Charger


ASTM D4945

EN ISO-22477-10

Meets or exceeds




Cable connect (optional)


Strain gage:










Sampling frequency

Sampling resolution

Bluetooth, 2.4Ghz, the connection from the Main unit to the computer.

Standard CAT5 RJ45 an optional replacement for Bluetooth

0.5 me 

500 me/mV/V Nom. 


-3600 to +3600 me 


0.01 g 

0.060 g/mV/V Nom. 


-2000 to +2000 g 

10 to 50 KHz 



Pile lengths


Pile Type


Unlimited (Concrete, Steel, Timber)

Any non-uniform piles 




Produced on office PC, including

Pile Details & CASE Method
Signal Matching Summary and Extrema Results
Static Load Test Simulation
Node Map



Computer (Minimum)

Microsoft Windows OS Win 7 /Win 10/ Win 11 

1366x768 resolution or better 

USB port 
WiFi 802.11ac

Recommended for BYOD: Tablet PC (outdoor display)

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