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.
Borehole profile gauges are designed for automatic monitoring of critical locations where displacement monitoring requires a continuous and accurate borehole profile.
BH profile is composed of a string of MEMS tilt sensors with carbon fibre extension rods and an upper terminal wheel assembly to close the chain. The string is connected to readout or data logger with single digital bus cable.
- Sensor strings give a readily automated profile of vertical or horizontal displacements
- Removable and modular system for multiple installation
- Accurate and precise measurements using MEMS sensors
- Available in Uniaxial and Biaxial versions
- Temperature sensor embedded in electronic board
- Carbon fibre rods grants light strings and simpler installation
- RS-485 Output
- Real-time monitoring with digital data logger
- Easy to automate using data acquisition systems and Geomotion Cloud
- Removes the need for manual monitoring
- Recoverable and reusable
- Suitable for safety critical applications
- Low power consumption
In-Place Inclinometers (IPIs) are installed in inclinometer casing within a borehole, piling cage, retaining wall. The sprung wheel assembly on the IPI engages into the keyways of the inclinometer casing to ensure alignment.
Multiple IPIs are installed at varying depths, secured using rods connected to the next/previous IPI; the final gauge rod is secured at the top of the borehole using a top support assembly.
Each IPI is connected to a data logger such as Loadsensing. The data logger powers the sensors, initiates readings and communicates the data which can be processed and analysed through Geomotion Cloud or through another compatible software.
IPI inclinometer systems measure lateral movement in the ground or in a structure. They are useful for determining the depth, direction, magnitude, and also rate of movement.
For example, they can be used to ascertain the stability of retaining walls by measuring bending and rotation in the retaining wall. They can also reveal ground movement that could affect other buildings. Inclinometer systems can also be used to detect movement in the downstream and upstream side of dams and to define shear zones in the foundations of concrete faced dams.
The measurements of recorded movement can be utilised to check that the deflections are within the design assumptions. Monitoring should be continued to establish any longterm effects after works have finished.
Inclinometer casings can be used in boreholes, embedded in fill material, cast into concrete or attached to structures for the following typical applications:
- Detecting slopes and landslides
- Determining shear and slip zones
- Monitoring diaphragm or sheet pile walls
- Monitoring bending in piles
- Verifying design assumptions and finite element analysis
- Long term monitoring purposes
- Monitoring dams
- Detecting and recording ground movement due to tunnelling operations
- Monitoring retaining walls
- Use horizontal In-Place Inclinometer systems to measure settlement and deformation of concrete slabs and tank bases