Integrated Dynamic Miniature Pore Water Pressure Transducer DSPP-I

Piezoresistive type           Compact and miniaturized structure

To meet the requirements for pore water pressure measurement under multi-field coupling and various soil environments, as well as to adapt to special scenarios such as conventional static/dynamic centrifuge tests, shaking table tests, and long-term in-situ monitoring, strict standards are usually required for the miniaturization design and comprehensive performance of pore water pressure sensors. In addition, it is necessary to avoid disturbing the original flow field distribution, so as to obtain accurate and reliable development laws of pore water pressure.

The DSPP-I integrated dynamic pore water pressure sensor is designed to meet the needs of conventional working conditions. The sensor adopts advanced domestic silicon-silicon bonding technology and high-performance domestic MEMS piezoresistive sensing elements, combined with internationally advanced miniaturized fabrication and packaging processes. It not only features small effective size, compact structure and high robustness, but also exhibits excellent reliability and stability. Its unique pagoda-shaped structure further improves the overall waterproof sealing performance, which can fully satisfy the measurement requirements of long-term monitoring in geotechnical engineering sites and conventional indoor physical model tests.

Typical features

• Miniaturized, with a minimum diameter of 8.8mm and length of 12.2mm;

• High frequency response, with a natural frequency of 100 kHz;

• Wide pressure measurement range: -100kPa~1.5MPa;

• Suitable for conventional static/dynamic pore pressure, gas/liquid fluid media, and various long-term monitoring tests;

• Special pagoda-shaped waterproof structure design;

• Excellent corrosion resistance, with an all-stainless steel housing;

• Resistance to strong/weak electromagnetic interference, high centrifugal force, and strong vibration;

• Excellent comprehensive performance, high practicability, and easy operation;

• Provide a complete factory report, with a 1-year warranty period;

Typical applications

• Conventional static centrifuge model test

• Conventional shaking table test

• Matrix suction test

• Offshore wave load and hydraulic test

• In-situ field test research

• Monitoring of marine engineering structures and offshore wind power foundations

• Monitoring of earthquake field, investigation, underwater blasting, etc.