The resistance strain type soil pressure box can dynamically collect data, overcoming the weakness of insufficient frequency response of steel string soil pressure boxes (steel string soil pressure boxes are usually measured every three seconds). The resistance strain type earth pressure box can be used both dynamically and statically, and the dynamic range is related to the size of the earth pressure box. The smaller the size, the higher the frequency, and the highest it can reach10KThe range is1KP~20MPAccuracy0.5%giveJC-4A，JC-4B，JC-4CVarious types of dynamic and static strain gauges are used in conjunction.

The structure is made of two circular or rectangular thin plates of different thicknesses, with a groove along the circumference to reduce the inertia of the pressure gauge and minimize the influence of radial stress. The full bridge is composed of circular resistance strain gauges and has temperature compensation function.

characteristic:1 Long term stability
2 The scope of stress testing is large
3 Made of stainless steel material, corrosion-resistant
4 Easy to install and operate, directly connected to the dynamic and static strains produced by various factories