Soil Instruments In-Place Inclinometer (IPI)

The In Place Inclinometer (IPI) is designed for near vertical borehole applications, the principal operation and data obtained are similar to the traversing type inclinometer systems such as the portable Digital Bluetooth Inclinometer systems. The In-Place Inclinometer (IPI) is used to measure lateral displacement within a borehole. Most commonly, the IPI is used in a system where multiple IPIs are installed at varying depths. In this manner the profile of the displacement can be monitored. The IPI itself consists of one or two (uniaxial or biaxial) MEMS tilt sensors mounted in a stainless steel housing. Each sensor incorporates an on-board microprocessor which performs an automatic temperature compensation of the tilt (g) data. 

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The sensor itself is a small discrete device which measures in g (gravity). The sensors are powered and read by a data logger such as the Campbell Scientific CR1000. Argus software can produce a near real time profile of displacement that is constantly updated.


  • Sensor strings give a readily automated profile of vertical or horizontal displacements
  • Accurate and precise measurements using MEMS sensors
  • Available in Uniaxial and Biaxial versions
  • Inbuilt temperature compensation
  • Stainless steel construction, waterproof to 2000kPa


  • Easy to automate using data acquisition systems and Argus software
  • Removes the need for manual monitoring
  • Recoverable and reusable
  • Suitable for safety critical applications
  • Low power consumption


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