These gradient consolidators use cylinders as vertical load power sources, and the permeate head pressure can be generated by the cylinder, and a constant head gradient can be set according to test needs. The Penetration Testing Equipment is equipped with vertical load sensor, vertical displacement sensor, water pressure sensor, etc. The penetration Test can also be used for loess collapse test, salt expansion and dissolution test of saline soil, expansion and contraction test of expansive soil, etc.