FWD/HWD Development

Automated Penetrometer

Subgrade CBR assement.
Penetrometer is running by el. motor with automated record of penetration into notebook. Computer software calculates processed value of CBR along the subgrade.

Calibration Equipment FWD/HWD

Equipment for geophone and load cell calibration. Computer software records measured data from 10 geophones and data from reference accelorometer and calculate new calibration constant for each geophone.
By calibration of load cell the software records measured forces displaed by reference and calibrated load cell and calculate new calibrating value.

Hydraulic Load Cell

was developed for FWD/HWD load cell calibration as a reference load cell with two times better accuracy than normally used load cells. Output 0-5V, accuracy 0,03%, range 0 - 350kN. Can be used either for static or dynamic calibration.