The main performance:
  (1)The exclusive invention in China; delicate, precise and stable; non-cohesive cement grout liquid;no radiation; environment friendly.
  (2) Pressure-gradient density sensor has the weakness that as the increasing time of grouting, cement grout will stick to the sensor, causing the gradual increase of error in measurement data and inaccurate metrology. Nuclear densimeter threatens environment and health with complicated operation and inaccurate metrology. While vapor-pressure densimeter integrates strength of the above two products and avoids their weakness. It is the best product to the current grouting construction.
  (3)It has a real time measurement of cement grouting liquid in the grouting with 1%
  (4) Convenient operation of installation, disassembly, and cleanout; steady performance.