360° LT-Inclibus array

Codes der Referenzprodukte: LTIB

The LT-Inclibus is able to monitor local tilting along a line, assuring the alignment, distance and measuring axis orientation between the gauges.
The standard segment is composed by a 2m fibre glass rod with two waterproof gauges, 1m spaced. It is possible to have one or four gauges on the 2m rod upon request.
Innovative 360° technology, allows each gauge to be calibrated over the full 360° range on three axes. This permits the LT-Inclibus to be installed in any orientation in space with no effect on measurement quality, simplifying installation operations.
The chain of LT- Inclibus can be installed within a borehole, laid along a trench, or buried in a concrete mass. The rods are connected through mechanical joints, while the gauges are connected in a RS485 chain.
Customers can use any electronic device compatible with RS485 and Modbus RTU protocol as a logger, such as OMNIAlog, WR-Log wireless node or MIND portable readout.
The LT-Inclibus gives a complete and transparent array of data in engineering unit (sexaggesimal degrees), as a result. Each instrument also provides raw data in terms of calibrated accelerations in x, y and z directions in case the user wants to calculate inclinations or rotations with different algorithms.

Tiltmeters are instruments that measure angles respect to the gravity acceleration vector. To get this result an accelerometer is required. It measures the projection of acceleration gravity on its sensing axis. Sensor can have 1, 2 or even 3 sensing axes.

The MEMS (Micro Electro Mechanical Systems) implementation of accelerometers it’s pretty young (about 20years) but mature enough to have its strong reliability been proven. MEMS are indeed silicon chips machined to create a mechanical part inside. The required electronic to read out the signal is inside the same chip.

The working principle is a spring-mass system: a mass (rotor) is anchored with springs to a fix frame (stator). When an acceleration occurs, the rotor moves respect to the stator loading or unloading the springs. That’s it: the displacement measurement is proportional to the applied acceleration. Displacement is measured with different technologies inside the chip but in its simplest form is related to a capacitance measure.

Sisgeo uses the state-of-the-art of MEMS accelerometers that implement several methods to compensate temperature variation and reduce the cross-axis error reaching very high accuracy.

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